From 0e63a588fc3d6a5e6bb66bacaeb11cd9093141f8 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Mon, 29 Dec 2008 20:27:29 +0100
Subject: ide: fix IDE ACPI regression breaking suspend

Commit 4dde4492d850a4c9bcaa92e5bd7f4eebe3e2f5ab ("ide: make drive->id
an union (take 2)") accidentally introduced an IDE ACPI regression which
at least on some machines confuses ACPI and breaks suspend. Fix it.

Fixes kernel.org bug #12279:
http://bugzilla.kernel.org/show_bug.cgi?id=12279

[ Sorry about the bug (IDE ACPI is not used by default so it managed
  to slip in).  Still it is kind of surprising that the bug breaks
  suspend as it shouldn't impact anything except IDE ACPI (it seems
  that it uncovered either some ACPI/PM deficiency or a BIOS bug). ]

Reported-and-bisected-by: David Roka <roka@dawid.hu>
Tested-by: David Roka <roka@dawid.hu>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-acpi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers/ide/ide-acpi.c')

diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index 244a8a052ce8..fd4a36433050 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -615,10 +615,10 @@ void ide_acpi_push_timing(ide_hwif_t *hwif)
 	in_params[0].buffer.length = sizeof(struct GTM_buffer);
 	in_params[0].buffer.pointer = (u8 *)&hwif->acpidata->gtm;
 	in_params[1].type = ACPI_TYPE_BUFFER;
-	in_params[1].buffer.length = sizeof(ATA_ID_WORDS * 2);
+	in_params[1].buffer.length = ATA_ID_WORDS * 2;
 	in_params[1].buffer.pointer = (u8 *)&master->idbuff;
 	in_params[2].type = ACPI_TYPE_BUFFER;
-	in_params[2].buffer.length = sizeof(ATA_ID_WORDS * 2);
+	in_params[2].buffer.length = ATA_ID_WORDS * 2;
 	in_params[2].buffer.pointer = (u8 *)&slave->idbuff;
 	/* Output buffer: _STM has no output */
 
-- 
cgit v1.2.3


From 898ec223fea2a2df88035e58dbf50f493577e225 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Tue, 6 Jan 2009 17:20:52 +0100
Subject: ide: remove HWIF() macro

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/aec62xx.c      |  4 ++--
 drivers/ide/alim15x3.c     |  4 ++--
 drivers/ide/au1xxx-ide.c   |  4 ++--
 drivers/ide/cmd64x.c       | 14 +++++++-------
 drivers/ide/cs5520.c       |  2 +-
 drivers/ide/cy82c693.c     |  2 +-
 drivers/ide/hpt366.c       | 18 +++++++++---------
 drivers/ide/icside.c       | 10 +++++-----
 drivers/ide/ide-acpi.c     |  4 ++--
 drivers/ide/ide-disk.c     |  4 ++--
 drivers/ide/ide-io.c       |  8 ++++----
 drivers/ide/ide-iops.c     |  4 ++--
 drivers/ide/ide-pm.c       |  4 ++--
 drivers/ide/ide-probe.c    | 12 ++++++------
 drivers/ide/ide-taskfile.c |  2 +-
 drivers/ide/it8213.c       |  4 ++--
 drivers/ide/ns87415.c      |  6 +++---
 drivers/ide/pdc202xx_new.c |  4 ++--
 drivers/ide/pdc202xx_old.c | 10 +++++-----
 drivers/ide/piix.c         |  6 +++---
 drivers/ide/pmac.c         |  4 ++--
 drivers/ide/qd65xx.c       |  7 ++++---
 drivers/ide/sc1200.c       |  6 +++---
 drivers/ide/scc_pata.c     |  8 ++++----
 drivers/ide/serverworks.c  |  2 +-
 drivers/ide/sgiioc4.c      | 12 ++++++------
 drivers/ide/siimage.c      | 10 +++++-----
 drivers/ide/sis5513.c      |  2 +-
 drivers/ide/sl82c105.c     |  4 ++--
 drivers/ide/slc90e66.c     |  4 ++--
 drivers/ide/tc86c001.c     |  6 +++---
 drivers/ide/triflex.c      |  2 +-
 drivers/ide/trm290.c       |  8 ++++----
 drivers/ide/via82cxxx.c    |  2 +-
 include/linux/ide.h        |  2 --
 35 files changed, 102 insertions(+), 103 deletions(-)

(limited to 'drivers/ide/ide-acpi.c')

diff --git a/drivers/ide/aec62xx.c b/drivers/ide/aec62xx.c
index 4142c698e0d3..4485b9c6f0e6 100644
--- a/drivers/ide/aec62xx.c
+++ b/drivers/ide/aec62xx.c
@@ -83,7 +83,7 @@ static u8 pci_bus_clock_list_ultra (u8 speed, struct chipset_bus_clock_list_entr
 
 static void aec6210_set_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	struct ide_host *host	= pci_get_drvdata(dev);
 	struct chipset_bus_clock_list_entry *bus_clock = host->host_priv;
@@ -111,7 +111,7 @@ static void aec6210_set_mode(ide_drive_t *drive, const u8 speed)
 
 static void aec6260_set_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	struct ide_host *host	= pci_get_drvdata(dev);
 	struct chipset_bus_clock_list_entry *bus_clock = host->host_priv;
diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c
index 290204e89eaf..8d217430c997 100644
--- a/drivers/ide/alim15x3.c
+++ b/drivers/ide/alim15x3.c
@@ -68,7 +68,7 @@ static struct pci_dev *isa_dev;
 
 static void ali_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct pci_dev *dev = to_pci_dev(hwif->dev);
 	struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
 	int s_time = t->setup, a_time = t->active, c_time = t->cycle;
@@ -150,7 +150,7 @@ static u8 ali_udma_filter(ide_drive_t *drive)
 
 static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u8 speed1		= speed;
 	u8 unit			= drive->dn & 1;
diff --git a/drivers/ide/au1xxx-ide.c b/drivers/ide/au1xxx-ide.c
index db412bc772d1..11f2c8f3db48 100644
--- a/drivers/ide/au1xxx-ide.c
+++ b/drivers/ide/au1xxx-ide.c
@@ -212,7 +212,7 @@ static void auide_set_dma_mode(ide_drive_t *drive, const u8 speed)
 static int auide_build_dmatable(ide_drive_t *drive)
 {
 	int i, iswrite, count = 0;
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct request *rq = hwif->rq;
 	_auide_hwif *ahwif = &auide_hwif;
 	struct scatterlist *sg;
@@ -286,7 +286,7 @@ static int auide_build_dmatable(ide_drive_t *drive)
 
 static int auide_dma_end(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 
 	if (hwif->sg_nents) {
 		ide_destroy_dmatable(drive);
diff --git a/drivers/ide/cmd64x.c b/drivers/ide/cmd64x.c
index 3623bf013bcf..d1fc198719b2 100644
--- a/drivers/ide/cmd64x.c
+++ b/drivers/ide/cmd64x.c
@@ -115,7 +115,7 @@ static void program_cycle_times (ide_drive_t *drive, int cycle_time, int active_
  */
 static void cmd64x_tune_pio(ide_drive_t *drive, const u8 pio)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	struct ide_timing *t	= ide_timing_find_mode(XFER_PIO_0 + pio);
 	unsigned int cycle_time;
@@ -180,7 +180,7 @@ static void cmd64x_set_pio_mode(ide_drive_t *drive, const u8 pio)
 
 static void cmd64x_set_dma_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u8 unit			= drive->dn & 0x01;
 	u8 regU = 0, pciU	= hwif->channel ? UDIDETCR1 : UDIDETCR0;
@@ -226,7 +226,7 @@ static void cmd64x_set_dma_mode(ide_drive_t *drive, const u8 speed)
 
 static int cmd648_dma_end(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	unsigned long base	= hwif->dma_base - (hwif->channel * 8);
 	int err			= ide_dma_end(drive);
 	u8  irq_mask		= hwif->channel ? MRDMODE_INTR_CH1 :
@@ -242,7 +242,7 @@ static int cmd648_dma_end(ide_drive_t *drive)
 
 static int cmd64x_dma_end(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	int irq_reg		= hwif->channel ? ARTTIM23 : CFR;
 	u8  irq_mask		= hwif->channel ? ARTTIM23_INTR_CH1 :
@@ -259,7 +259,7 @@ static int cmd64x_dma_end(ide_drive_t *drive)
 
 static int cmd648_dma_test_irq(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	unsigned long base	= hwif->dma_base - (hwif->channel * 8);
 	u8 irq_mask		= hwif->channel ? MRDMODE_INTR_CH1 :
 						  MRDMODE_INTR_CH0;
@@ -282,7 +282,7 @@ static int cmd648_dma_test_irq(ide_drive_t *drive)
 
 static int cmd64x_dma_test_irq(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	int irq_reg		= hwif->channel ? ARTTIM23 : CFR;
 	u8  irq_mask		= hwif->channel ? ARTTIM23_INTR_CH1 :
@@ -313,7 +313,7 @@ static int cmd64x_dma_test_irq(ide_drive_t *drive)
 
 static int cmd646_1_dma_end(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	u8 dma_stat = 0, dma_cmd = 0;
 
 	drive->waiting_for_dma = 0;
diff --git a/drivers/ide/cs5520.c b/drivers/ide/cs5520.c
index 5efb467f8fa0..d003bec56ff9 100644
--- a/drivers/ide/cs5520.c
+++ b/drivers/ide/cs5520.c
@@ -59,7 +59,7 @@ static struct pio_clocks cs5520_pio_clocks[]={
 
 static void cs5520_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct pci_dev *pdev = to_pci_dev(hwif->dev);
 	int controller = drive->dn > 1 ? 1 : 0;
 
diff --git a/drivers/ide/cy82c693.c b/drivers/ide/cy82c693.c
index d37baf8ecc5f..74fc5401f407 100644
--- a/drivers/ide/cy82c693.c
+++ b/drivers/ide/cy82c693.c
@@ -203,7 +203,7 @@ static void cy82c693_set_dma_mode(ide_drive_t *drive, const u8 mode)
 
 static void cy82c693_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct pci_dev *dev = to_pci_dev(hwif->dev);
 	pio_clocks_t pclk;
 	unsigned int addrCtrl;
diff --git a/drivers/ide/hpt366.c b/drivers/ide/hpt366.c
index b18e10d99d2e..a18a02a96977 100644
--- a/drivers/ide/hpt366.c
+++ b/drivers/ide/hpt366.c
@@ -626,7 +626,7 @@ static struct hpt_info *hpt3xx_get_info(struct device *dev)
 
 static u8 hpt3xx_udma_filter(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct hpt_info *info	= hpt3xx_get_info(hwif->dev);
 	u8 mask 		= hwif->ultra_mask;
 
@@ -665,7 +665,7 @@ static u8 hpt3xx_udma_filter(ide_drive_t *drive)
 
 static u8 hpt3xx_mdma_filter(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct hpt_info *info	= hpt3xx_get_info(hwif->dev);
 
 	switch (info->chip_type) {
@@ -743,7 +743,7 @@ static void hpt3xx_quirkproc(ide_drive_t *drive)
 
 static void hpt3xx_maskproc(ide_drive_t *drive, int mask)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev	*dev	= to_pci_dev(hwif->dev);
 	struct hpt_info *info	= hpt3xx_get_info(hwif->dev);
 
@@ -788,7 +788,7 @@ static void hpt366_dma_lost_irq(ide_drive_t *drive)
 
 static void hpt370_clear_engine(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct pci_dev *dev = to_pci_dev(hwif->dev);
 
 	pci_write_config_byte(dev, hwif->select_data, 0x37);
@@ -797,7 +797,7 @@ static void hpt370_clear_engine(ide_drive_t *drive)
 
 static void hpt370_irq_timeout(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u16 bfifo		= 0;
 	u8  dma_cmd;
@@ -822,7 +822,7 @@ static void hpt370_dma_start(ide_drive_t *drive)
 
 static int hpt370_dma_end(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	u8  dma_stat		= inb(hwif->dma_base + ATA_DMA_STATUS);
 
 	if (dma_stat & 0x01) {
@@ -844,7 +844,7 @@ static void hpt370_dma_timeout(ide_drive_t *drive)
 /* returns 1 if DMA IRQ issued, 0 otherwise */
 static int hpt374_dma_test_irq(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u16 bfifo		= 0;
 	u8  dma_stat;
@@ -865,7 +865,7 @@ static int hpt374_dma_test_irq(ide_drive_t *drive)
 
 static int hpt374_dma_end(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u8 mcr	= 0, mcr_addr	= hwif->select_data;
 	u8 bwsr = 0, mask	= hwif->channel ? 0x02 : 0x01;
@@ -927,7 +927,7 @@ static void hpt3xxn_set_clock(ide_hwif_t *hwif, u8 mode)
 
 static void hpt3xxn_rw_disk(ide_drive_t *drive, struct request *rq)
 {
-	hpt3xxn_set_clock(HWIF(drive), rq_data_dir(rq) ? 0x23 : 0x21);
+	hpt3xxn_set_clock(drive->hwif, rq_data_dir(rq) ? 0x23 : 0x21);
 }
 
 /**
diff --git a/drivers/ide/icside.c b/drivers/ide/icside.c
index 72d95c99f147..97a35c667aee 100644
--- a/drivers/ide/icside.c
+++ b/drivers/ide/icside.c
@@ -166,7 +166,7 @@ static const expansioncard_ops_t icside_ops_arcin_v6 = {
  */
 static void icside_maskproc(ide_drive_t *drive, int mask)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct expansion_card *ec = ECARD_DEV(hwif->dev);
 	struct icside_state *state = ecard_get_drvdata(ec);
 	unsigned long flags;
@@ -284,7 +284,7 @@ static void icside_dma_host_set(ide_drive_t *drive, int on)
 
 static int icside_dma_end(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct expansion_card *ec = ECARD_DEV(hwif->dev);
 
 	drive->waiting_for_dma = 0;
@@ -299,7 +299,7 @@ static int icside_dma_end(ide_drive_t *drive)
 
 static void icside_dma_start(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct expansion_card *ec = ECARD_DEV(hwif->dev);
 
 	/* We can not enable DMA on both channels simultaneously. */
@@ -309,7 +309,7 @@ static void icside_dma_start(ide_drive_t *drive)
 
 static int icside_dma_setup(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct expansion_card *ec = ECARD_DEV(hwif->dev);
 	struct icside_state *state = ecard_get_drvdata(ec);
 	struct request *rq = hwif->rq;
@@ -362,7 +362,7 @@ static void icside_dma_exec_cmd(ide_drive_t *drive, u8 cmd)
 
 static int icside_dma_test_irq(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct expansion_card *ec = ECARD_DEV(hwif->dev);
 	struct icside_state *state = ecard_get_drvdata(ec);
 
diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index fd4a36433050..f89b6ecf7d1a 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -218,7 +218,7 @@ static acpi_handle ide_acpi_hwif_get_handle(ide_hwif_t *hwif)
  */
 static acpi_handle ide_acpi_drive_get_handle(ide_drive_t *drive)
 {
-	ide_hwif_t	*hwif = HWIF(drive);
+	ide_hwif_t	*hwif = drive->hwif;
 	int		 port;
 	acpi_handle	 drive_handle;
 
@@ -263,7 +263,7 @@ static int do_drive_get_GTF(ide_drive_t *drive,
 	acpi_status			status;
 	struct acpi_buffer		output;
 	union acpi_object 		*out_obj;
-	ide_hwif_t			*hwif = HWIF(drive);
+	ide_hwif_t			*hwif = drive->hwif;
 	struct device			*dev = hwif->gendev.parent;
 	int				err = -ENODEV;
 	int				port;
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index eb9fac4d0f0c..4088a622873e 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -89,7 +89,7 @@ static void ide_tf_set_cmd(ide_drive_t *drive, ide_task_t *task, u8 dma)
 static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 					sector_t block)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	u16 nsectors		= (u16)rq->nr_sectors;
 	u8 lba48		= !!(drive->dev_flags & IDE_DFLAG_LBA48);
 	u8 dma			= !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
@@ -187,7 +187,7 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 				      sector_t block)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 
 	BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
 
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 6ff82d7055b9..0e2b95ec08a5 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -463,7 +463,7 @@ EXPORT_SYMBOL_GPL(ide_init_sg_cmd);
 static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
 		struct request *rq)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	ide_task_t *task = rq->special;
 
 	if (task) {
@@ -587,7 +587,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
 
 #ifdef DEBUG
 	printk("%s: start_request: current=0x%08lx\n",
-		HWIF(drive)->name, (unsigned long) rq);
+		drive->hwif->name, (unsigned long) rq);
 #endif
 
 	/* bail early if we've exceeded max_failures */
@@ -833,7 +833,7 @@ plug_device_2:
  */
 static ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct request *rq;
 	ide_startstop_t ret = ide_stopped;
 
@@ -955,7 +955,7 @@ void ide_timer_expiry (unsigned long data)
 			 * globally mask the specific IRQ:
 			 */
 			spin_unlock(&hwif->lock);
-			hwif  = HWIF(drive);
+			hwif = drive->hwif;
 			/* disable_irq_nosync ?? */
 			disable_irq(hwif->irq);
 			/* local CPU only,
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index b92304d0e79a..386080ee4608 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -451,7 +451,7 @@ EXPORT_SYMBOL(ide_fixstring);
  */
 int drive_is_ready (ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	u8 stat			= 0;
 
 	if (drive->waiting_for_dma)
@@ -965,7 +965,7 @@ static void ide_reset_report_error(ide_hwif_t *hwif, u8 err)
  */
 static ide_startstop_t reset_pollfunc (ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	const struct ide_port_ops *port_ops = hwif->port_ops;
 	u8 tmp;
 	int err = 0;
diff --git a/drivers/ide/ide-pm.c b/drivers/ide/ide-pm.c
index abb84a2dd821..0c206c68bbb1 100644
--- a/drivers/ide/ide-pm.c
+++ b/drivers/ide/ide-pm.c
@@ -5,7 +5,7 @@
 int generic_ide_suspend(struct device *dev, pm_message_t mesg)
 {
 	ide_drive_t *drive = dev->driver_data, *pair = ide_get_pair_dev(drive);
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct request *rq;
 	struct request_pm_state rqpm;
 	ide_task_t args;
@@ -39,7 +39,7 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg)
 int generic_ide_resume(struct device *dev)
 {
 	ide_drive_t *drive = dev->driver_data, *pair = ide_get_pair_dev(drive);
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct request *rq;
 	struct request_pm_state rqpm;
 	ide_task_t args;
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 09ea50118e63..9dfa99f062aa 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -189,7 +189,7 @@ static void ide_classify_atapi_dev(ide_drive_t *drive)
 
 static void do_identify(ide_drive_t *drive, u8 cmd)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	u16 *id = drive->id;
 	char *m = (char *)&id[ATA_ID_PROD];
 	unsigned long flags;
@@ -266,7 +266,7 @@ err_misc:
 
 static int actual_try_to_identify (ide_drive_t *drive, u8 cmd)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct ide_io_ports *io_ports = &hwif->io_ports;
 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
 	int use_altstatus = 0, rc;
@@ -341,7 +341,7 @@ static int actual_try_to_identify (ide_drive_t *drive, u8 cmd)
  
 static int try_to_identify (ide_drive_t *drive, u8 cmd)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
 	int retval;
 	int autoprobe = 0;
@@ -438,7 +438,7 @@ static u8 ide_read_device(ide_drive_t *drive)
 
 static int do_probe (ide_drive_t *drive, u8 cmd)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
 	int rc;
 	u8 present = !!(drive->dev_flags & IDE_DFLAG_PRESENT), stat;
@@ -522,7 +522,7 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
  */
 static void enable_nest (ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
 	u8 stat;
 
@@ -869,7 +869,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
 static int ide_init_queue(ide_drive_t *drive)
 {
 	struct request_queue *q;
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	int max_sectors = 256;
 	int max_sg_entries = PRD_ENTRIES;
 
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 693e8d15fb78..55d451ce9b4f 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -58,7 +58,7 @@ static ide_startstop_t task_in_intr(ide_drive_t *);
 
 ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct ide_taskfile *tf = &task->tf;
 	ide_handler_t *handler = NULL;
 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
diff --git a/drivers/ide/it8213.c b/drivers/ide/it8213.c
index 7c2feeb3c5ec..d7969b6d139e 100644
--- a/drivers/ide/it8213.c
+++ b/drivers/ide/it8213.c
@@ -25,7 +25,7 @@
 
 static void it8213_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	int is_slave		= drive->dn & 1;
 	int master_port		= 0x40;
@@ -82,7 +82,7 @@ static void it8213_set_pio_mode(ide_drive_t *drive, const u8 pio)
 
 static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u8 maslave		= 0x40;
 	int a_speed		= 3 << (drive->dn * 4);
diff --git a/drivers/ide/ns87415.c b/drivers/ide/ns87415.c
index 13789060f407..aceb2fcbe1d1 100644
--- a/drivers/ide/ns87415.c
+++ b/drivers/ide/ns87415.c
@@ -138,12 +138,12 @@ static unsigned int ns87415_count = 0, ns87415_control[MAX_HWIFS] = { 0 };
 
 /*
  * This routine either enables/disables (according to IDE_DFLAG_PRESENT)
- * the IRQ associated with the port (HWIF(drive)),
+ * the IRQ associated with the port,
  * and selects either PIO or DMA handshaking for the next I/O operation.
  */
 static void ns87415_prepare_drive (ide_drive_t *drive, unsigned int use_dma)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct pci_dev *dev = to_pci_dev(hwif->dev);
 	unsigned int bit, other, new, *old = (unsigned int *) hwif->select_data;
 	unsigned long flags;
@@ -197,7 +197,7 @@ static void ns87415_selectproc (ide_drive_t *drive)
 
 static int ns87415_dma_end(ide_drive_t *drive)
 {
-	ide_hwif_t      *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	u8 dma_stat = 0, dma_cmd = 0;
 
 	drive->waiting_for_dma = 0;
diff --git a/drivers/ide/pdc202xx_new.c b/drivers/ide/pdc202xx_new.c
index 211ae46e3e0c..f21290c4b447 100644
--- a/drivers/ide/pdc202xx_new.c
+++ b/drivers/ide/pdc202xx_new.c
@@ -143,7 +143,7 @@ static struct udma_timing {
 
 static void pdcnew_set_dma_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u8 adj			= (drive->dn & 1) ? 0x08 : 0x00;
 
@@ -219,7 +219,7 @@ static void pdcnew_reset(ide_drive_t *drive)
 	 * Deleted this because it is redundant from the caller.
 	 */
 	printk(KERN_WARNING "pdc202xx_new: %s channel reset.\n",
-		HWIF(drive)->channel ? "Secondary" : "Primary");
+		drive->hwif->channel ? "Secondary" : "Primary");
 }
 
 /**
diff --git a/drivers/ide/pdc202xx_old.c b/drivers/ide/pdc202xx_old.c
index 072ef70bf061..e8e6b29d9e41 100644
--- a/drivers/ide/pdc202xx_old.c
+++ b/drivers/ide/pdc202xx_old.c
@@ -39,7 +39,7 @@ static void pdc_old_disable_66MHz_clock(ide_hwif_t *);
 
 static void pdc202xx_set_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u8 drive_pci		= 0x60 + (drive->dn << 2);
 
@@ -169,7 +169,7 @@ static void pdc202xx_dma_start(ide_drive_t *drive)
 	if (drive->current_speed > XFER_UDMA_2)
 		pdc_old_enable_66MHz_clock(drive->hwif);
 	if (drive->media != ide_disk || (drive->dev_flags & IDE_DFLAG_LBA48)) {
-		ide_hwif_t *hwif	= HWIF(drive);
+		ide_hwif_t *hwif	= drive->hwif;
 		struct request *rq	= hwif->rq;
 		unsigned long high_16	= hwif->extra_base - 16;
 		unsigned long atapi_reg	= high_16 + (hwif->channel ? 0x24 : 0x20);
@@ -189,7 +189,7 @@ static void pdc202xx_dma_start(ide_drive_t *drive)
 static int pdc202xx_dma_end(ide_drive_t *drive)
 {
 	if (drive->media != ide_disk || (drive->dev_flags & IDE_DFLAG_LBA48)) {
-		ide_hwif_t *hwif	= HWIF(drive);
+		ide_hwif_t *hwif	= drive->hwif;
 		unsigned long high_16	= hwif->extra_base - 16;
 		unsigned long atapi_reg	= high_16 + (hwif->channel ? 0x24 : 0x20);
 		u8 clock		= 0;
@@ -205,7 +205,7 @@ static int pdc202xx_dma_end(ide_drive_t *drive)
 
 static int pdc202xx_dma_test_irq(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	unsigned long high_16	= hwif->extra_base - 16;
 	u8 dma_stat		= inb(hwif->dma_base + ATA_DMA_STATUS);
 	u8 sc1d			= inb(high_16 + 0x001d);
@@ -243,7 +243,7 @@ static void pdc202xx_reset_host (ide_hwif_t *hwif)
 
 static void pdc202xx_reset (ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	ide_hwif_t *mate	= hwif->mate;
 
 	pdc202xx_reset_host(hwif);
diff --git a/drivers/ide/piix.c b/drivers/ide/piix.c
index 61d2d920a5cd..e57b6c3ac78e 100644
--- a/drivers/ide/piix.c
+++ b/drivers/ide/piix.c
@@ -67,7 +67,7 @@ static int no_piix_dma;
 
 static void piix_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	int is_slave		= drive->dn & 1;
 	int master_port		= hwif->channel ? 0x42 : 0x40;
@@ -136,7 +136,7 @@ static void piix_set_pio_mode(ide_drive_t *drive, const u8 pio)
 
 static void piix_set_dma_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u8 maslave		= hwif->channel ? 0x42 : 0x40;
 	int a_speed		= 3 << (drive->dn * 4);
@@ -224,7 +224,7 @@ static unsigned int init_chipset_ich(struct pci_dev *dev)
  */
 static void ich_clear_irq(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	u8 dma_stat;
 
 	/*
diff --git a/drivers/ide/pmac.c b/drivers/ide/pmac.c
index 899b96baf215..ee52a21af1be 100644
--- a/drivers/ide/pmac.c
+++ b/drivers/ide/pmac.c
@@ -1513,7 +1513,7 @@ use_pio_instead:
 static int
 pmac_ide_dma_setup(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	pmac_ide_hwif_t *pmif =
 		(pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent);
 	struct request *rq = hwif->rq;
@@ -1637,7 +1637,7 @@ pmac_ide_dma_test_irq (ide_drive_t *drive)
 			break;
 		if (++timeout > 100) {
 			printk(KERN_WARNING "ide%d, ide_dma_test_irq \
-			timeout flushing channel\n", HWIF(drive)->index);
+			timeout flushing channel\n", hwif->index);
 			break;
 		}
 	}	
diff --git a/drivers/ide/qd65xx.c b/drivers/ide/qd65xx.c
index bc27c7aba936..5b2e3af43c4b 100644
--- a/drivers/ide/qd65xx.c
+++ b/drivers/ide/qd65xx.c
@@ -202,7 +202,8 @@ static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio)
 		recovery_time = drive->id[ATA_ID_EIDE_PIO] - 120;
 	}
 
-	qd_set_timing(drive, qd6500_compute_timing(HWIF(drive), active_time, recovery_time));
+	qd_set_timing(drive, qd6500_compute_timing(drive->hwif,
+				active_time, recovery_time));
 }
 
 static void qd6580_set_pio_mode(ide_drive_t *drive, const u8 pio)
@@ -245,11 +246,11 @@ static void qd6580_set_pio_mode(ide_drive_t *drive, const u8 pio)
 		printk(KERN_INFO "%s: PIO mode%d\n", drive->name,pio);
 	}
 
-	if (!HWIF(drive)->channel && drive->media != ide_disk) {
+	if (!hwif->channel && drive->media != ide_disk) {
 		outb(0x5f, QD_CONTROL_PORT);
 		printk(KERN_WARNING "%s: ATAPI: disabled read-ahead FIFO "
 			"and post-write buffer on %s.\n",
-			drive->name, HWIF(drive)->name);
+			drive->name, hwif->name);
 	}
 
 	qd_set_timing(drive, qd6580_compute_timing(active_time, recovery_time));
diff --git a/drivers/ide/sc1200.c b/drivers/ide/sc1200.c
index ec7f766ef5e4..6f68fe984bfb 100644
--- a/drivers/ide/sc1200.c
+++ b/drivers/ide/sc1200.c
@@ -125,7 +125,7 @@ out:
 
 static void sc1200_set_dma_mode(ide_drive_t *drive, const u8 mode)
 {
-	ide_hwif_t		*hwif = HWIF(drive);
+	ide_hwif_t		*hwif = drive->hwif;
 	struct pci_dev		*dev = to_pci_dev(hwif->dev);
 	unsigned int		reg, timings;
 	unsigned short		pci_clock;
@@ -170,7 +170,7 @@ static void sc1200_set_dma_mode(ide_drive_t *drive, const u8 mode)
  */
 static int sc1200_dma_end(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	unsigned long dma_base = hwif->dma_base;
 	byte dma_stat;
 
@@ -199,7 +199,7 @@ static int sc1200_dma_end(ide_drive_t *drive)
 
 static void sc1200_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-	ide_hwif_t	*hwif = HWIF(drive);
+	ide_hwif_t	*hwif = drive->hwif;
 	int		mode = -1;
 
 	/*
diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c
index e966113fd569..90574ab76345 100644
--- a/drivers/ide/scc_pata.c
+++ b/drivers/ide/scc_pata.c
@@ -217,7 +217,7 @@ scc_ide_outsl(unsigned long port, void *addr, u32 count)
 
 static void scc_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct scc_ports *ports = ide_get_hwifdata(hwif);
 	unsigned long ctl_base = ports->ctl;
 	unsigned long cckctrl_port = ctl_base + 0xff0;
@@ -249,7 +249,7 @@ static void scc_set_pio_mode(ide_drive_t *drive, const u8 pio)
 
 static void scc_set_dma_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct scc_ports *ports = ide_get_hwifdata(hwif);
 	unsigned long ctl_base = ports->ctl;
 	unsigned long cckctrl_port = ctl_base + 0xff0;
@@ -387,7 +387,7 @@ static int __scc_dma_end(ide_drive_t *drive)
 
 static int scc_dma_end(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	void __iomem *dma_base = (void __iomem *)hwif->dma_base;
 	unsigned long intsts_port = hwif->dma_base + 0x014;
 	u32 reg;
@@ -496,7 +496,7 @@ static int scc_dma_end(ide_drive_t *drive)
 /* returns 1 if dma irq issued, 0 otherwise */
 static int scc_dma_test_irq(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	u32 int_stat = in_be32((void __iomem *)hwif->dma_base + 0x014);
 
 	/* SCC errata A252,A308 workaround: Step4 */
diff --git a/drivers/ide/serverworks.c b/drivers/ide/serverworks.c
index 437bc919dafd..382102ba467b 100644
--- a/drivers/ide/serverworks.c
+++ b/drivers/ide/serverworks.c
@@ -151,7 +151,7 @@ static void svwks_set_dma_mode(ide_drive_t *drive, const u8 speed)
 	static const u8 dma_modes[]		= { 0x77, 0x21, 0x20 };
 	static const u8 drive_pci2[]		= { 0x45, 0x44, 0x47, 0x46 };
 
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u8 unit			= drive->dn & 1;
 
diff --git a/drivers/ide/sgiioc4.c b/drivers/ide/sgiioc4.c
index c68b71b1087b..8e1ffd57a86d 100644
--- a/drivers/ide/sgiioc4.c
+++ b/drivers/ide/sgiioc4.c
@@ -123,7 +123,7 @@ static int
 sgiioc4_clearirq(ide_drive_t * drive)
 {
 	u32 intr_reg;
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct ide_io_ports *io_ports = &hwif->io_ports;
 	unsigned long other_ir = io_ports->irq_addr + (IOC4_INTR_REG << 2);
 
@@ -181,7 +181,7 @@ sgiioc4_clearirq(ide_drive_t * drive)
 
 static void sgiioc4_dma_start(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	unsigned long ioc4_dma_addr = hwif->dma_base + IOC4_DMA_CTRL * 4;
 	unsigned int reg = readl((void __iomem *)ioc4_dma_addr);
 	unsigned int temp_reg = reg | IOC4_S_DMA_START;
@@ -209,7 +209,7 @@ sgiioc4_ide_dma_stop(ide_hwif_t *hwif, u64 dma_base)
 static int sgiioc4_dma_end(ide_drive_t *drive)
 {
 	u32 ioc4_dma, bc_dev, bc_mem, num, valid = 0, cnt = 0;
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	unsigned long dma_base = hwif->dma_base;
 	int dma_stat = 0;
 	unsigned long *ending_dma = ide_get_hwifdata(hwif);
@@ -271,7 +271,7 @@ static void sgiioc4_set_dma_mode(ide_drive_t *drive, const u8 speed)
 /* returns 1 if dma irq issued, 0 otherwise */
 static int sgiioc4_dma_test_irq(ide_drive_t *drive)
 {
-	return sgiioc4_checkirq(HWIF(drive));
+	return sgiioc4_checkirq(drive->hwif);
 }
 
 static void sgiioc4_dma_host_set(ide_drive_t *drive, int on)
@@ -367,7 +367,7 @@ static void
 sgiioc4_configure_for_dma(int dma_direction, ide_drive_t * drive)
 {
 	u32 ioc4_dma;
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	unsigned long dma_base = hwif->dma_base;
 	unsigned long ioc4_dma_addr = dma_base + IOC4_DMA_CTRL * 4;
 	u32 dma_addr, ending_dma_addr;
@@ -427,7 +427,7 @@ sgiioc4_configure_for_dma(int dma_direction, ide_drive_t * drive)
 static unsigned int
 sgiioc4_build_dma_table(ide_drive_t * drive, struct request *rq, int ddir)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	unsigned int *table = hwif->dmatable_cpu;
 	unsigned int count = 0, i = 1;
 	struct scatterlist *sg;
diff --git a/drivers/ide/siimage.c b/drivers/ide/siimage.c
index 7d622d20bc4c..652b3a04620f 100644
--- a/drivers/ide/siimage.c
+++ b/drivers/ide/siimage.c
@@ -114,7 +114,7 @@ static unsigned long siimage_selreg(ide_hwif_t *hwif, int r)
 
 static inline unsigned long siimage_seldev(ide_drive_t *drive, int r)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	unsigned long base	= (unsigned long)hwif->hwif_data;
 	u8 unit			= drive->dn & 1;
 
@@ -243,7 +243,7 @@ static void sil_set_pio_mode(ide_drive_t *drive, u8 pio)
 	static const u16 tf_speed[]   = { 0x328a, 0x2283, 0x1281, 0x10c3, 0x10c1 };
 	static const u16 data_speed[] = { 0x328a, 0x2283, 0x1104, 0x10c3, 0x10c1 };
 
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	ide_drive_t *pair	= ide_get_pair_dev(drive);
 	u32 speedt		= 0;
@@ -300,7 +300,7 @@ static void sil_set_dma_mode(ide_drive_t *drive, const u8 speed)
 	static const u8 ultra5[] = { 0x0C, 0x07, 0x05, 0x04, 0x02, 0x01 };
 	static const u16 dma[]	 = { 0x2208, 0x10C2, 0x10C1 };
 
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	unsigned long base	= (unsigned long)hwif->hwif_data;
 	u16 ultra = 0, multi	= 0;
@@ -340,7 +340,7 @@ static void sil_set_dma_mode(ide_drive_t *drive, const u8 speed)
 /* returns 1 if dma irq issued, 0 otherwise */
 static int siimage_io_dma_test_irq(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u8 dma_altstat		= 0;
 	unsigned long addr	= siimage_selreg(hwif, 1);
@@ -367,7 +367,7 @@ static int siimage_io_dma_test_irq(ide_drive_t *drive)
 
 static int siimage_mmio_dma_test_irq(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	unsigned long addr	= siimage_selreg(hwif, 0x1);
 	void __iomem *sata_error_addr
 		= (void __iomem *)hwif->sata_scr[SATA_ERROR_OFFSET];
diff --git a/drivers/ide/sis5513.c b/drivers/ide/sis5513.c
index ad32e18c5ba3..9ec1a4a4432c 100644
--- a/drivers/ide/sis5513.c
+++ b/drivers/ide/sis5513.c
@@ -274,7 +274,7 @@ static void sis_program_timings(ide_drive_t *drive, const u8 mode)
 
 static void config_drive_art_rwp(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u8 reg4bh		= 0;
 	u8 rw_prefetch		= 0;
diff --git a/drivers/ide/sl82c105.c b/drivers/ide/sl82c105.c
index 84dc33602ff8..1ded01d81ab3 100644
--- a/drivers/ide/sl82c105.c
+++ b/drivers/ide/sl82c105.c
@@ -140,7 +140,7 @@ static inline void sl82c105_reset_host(struct pci_dev *dev)
  */
 static void sl82c105_dma_lost_irq(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u32 val, mask		= hwif->channel ? CTRL_IDE_IRQB : CTRL_IDE_IRQA;
 	u8 dma_cmd;
@@ -177,7 +177,7 @@ static void sl82c105_dma_lost_irq(ide_drive_t *drive)
  */
 static void sl82c105_dma_start(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	int reg 		= 0x44 + drive->dn * 4;
 
diff --git a/drivers/ide/slc90e66.c b/drivers/ide/slc90e66.c
index 0f759e4ed779..40b4b94a4288 100644
--- a/drivers/ide/slc90e66.c
+++ b/drivers/ide/slc90e66.c
@@ -20,7 +20,7 @@ static DEFINE_SPINLOCK(slc90e66_lock);
 
 static void slc90e66_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	int is_slave		= drive->dn & 1;
 	int master_port		= hwif->channel ? 0x42 : 0x40;
@@ -73,7 +73,7 @@ static void slc90e66_set_pio_mode(ide_drive_t *drive, const u8 pio)
 
 static void slc90e66_set_dma_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	u8 maslave		= hwif->channel ? 0x42 : 0x40;
 	int sitre = 0, a_speed	= 7 << (drive->dn * 4);
diff --git a/drivers/ide/tc86c001.c b/drivers/ide/tc86c001.c
index accb379bcad6..d2c00fb928e4 100644
--- a/drivers/ide/tc86c001.c
+++ b/drivers/ide/tc86c001.c
@@ -15,7 +15,7 @@
 
 static void tc86c001_set_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	unsigned long scr_port	= hwif->config_data + (drive->dn ? 0x02 : 0x00);
 	u16 mode, scr		= inw(scr_port);
 
@@ -62,7 +62,7 @@ static void tc86c001_set_pio_mode(ide_drive_t *drive, const u8 pio)
  */
 static int tc86c001_timer_expiry(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	ide_expiry_t *expiry	= ide_get_hwifdata(hwif);
 	u8 dma_stat		= inb(hwif->dma_base + ATA_DMA_STATUS);
 
@@ -109,7 +109,7 @@ static int tc86c001_timer_expiry(ide_drive_t *drive)
 
 static void tc86c001_dma_start(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif	= drive->hwif;
 	unsigned long sc_base	= hwif->config_data;
 	unsigned long twcr_port	= sc_base + (drive->dn ? 0x06 : 0x04);
 	unsigned long nsectors	= hwif->rq->nr_sectors;
diff --git a/drivers/ide/triflex.c b/drivers/ide/triflex.c
index b6ff40336aa9..8773c3ba7462 100644
--- a/drivers/ide/triflex.c
+++ b/drivers/ide/triflex.c
@@ -36,7 +36,7 @@
 
 static void triflex_set_mode(ide_drive_t *drive, const u8 speed)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	struct pci_dev *dev = to_pci_dev(hwif->dev);
 	u32 triflex_timings = 0;
 	u16 timing = 0;
diff --git a/drivers/ide/trm290.c b/drivers/ide/trm290.c
index 79a03df118d8..b6a1285a4021 100644
--- a/drivers/ide/trm290.c
+++ b/drivers/ide/trm290.c
@@ -144,7 +144,7 @@
 
 static void trm290_prepare_drive (ide_drive_t *drive, unsigned int use_dma)
 {
-	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
 	u16 reg = 0;
 	unsigned long flags;
 
@@ -222,15 +222,15 @@ static int trm290_dma_end(ide_drive_t *drive)
 	drive->waiting_for_dma = 0;
 	/* purge DMA mappings */
 	ide_destroy_dmatable(drive);
-	status = inw(HWIF(drive)->dma_base + 2);
+	status = inw(drive->hwif->dma_base + 2);
+
 	return status != 0x00ff;
 }
 
 static int trm290_dma_test_irq(ide_drive_t *drive)
 {
-	u16 status;
+	u16 status = inw(drive->hwif->dma_base + 2);
 
-	status = inw(HWIF(drive)->dma_base + 2);
 	return status == 0x00ff;
 }
 
diff --git a/drivers/ide/via82cxxx.c b/drivers/ide/via82cxxx.c
index 2a812d3207e9..fecc0e03c3fc 100644
--- a/drivers/ide/via82cxxx.c
+++ b/drivers/ide/via82cxxx.c
@@ -178,7 +178,7 @@ static void via_set_drive(ide_drive_t *drive, const u8 speed)
 		ide_timing_merge(&p, &t, &t, IDE_TIMING_8BIT);
 	}
 
-	via_set_speed(HWIF(drive), drive->dn, &t);
+	via_set_speed(hwif, drive->dn, &t);
 }
 
 /**
diff --git a/include/linux/ide.h b/include/linux/ide.h
index ee2f461882ad..58b9c99482cd 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -42,8 +42,6 @@ typedef unsigned char	byte;	/* used everywhere */
 #define ERROR_RESET	3	/* Reset controller every 4th retry */
 #define ERROR_RECAL	1	/* Recalibrate every 2nd retry */
 
-#define HWIF(drive)		((ide_hwif_t *)((drive)->hwif))
-
 /*
  * Definitions for accessing IDE controller registers
  */
-- 
cgit v1.2.3


From 5e7f3a46690f7f6c9f2781c700ab4370874aa0e8 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Tue, 6 Jan 2009 17:20:56 +0100
Subject: ide: dynamic allocation of device structures

Allocate device structures dynamically instead of having them embedded
in ide_hwif_t:

* Remove needless zeroing of port structure from ide_init_port_data().

* Add ide_hwif_t.devices[MAX_DRIVES] (table of pointers to the devices).

* Add ide_port_{alloc,free}_devices() helpers and use them respectively
  in ide_{host,free}_alloc().

* Convert all users of ->drives[] to use ->devices[] instead.

While at it:

* Use drive->dn for the slave device check in scc_pata.c.

As a nice side-effect this patch cuts ~1kB (x86-32) from the resulting
code size:

   text    data     bss     dec     hex filename
  53963    1244     237   55444    d894 drivers/ide/ide-core.o.before
  52981    1244     237   54462    d4be drivers/ide/ide-core.o.after

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-acpi.c  | 10 +++----
 drivers/ide/ide-iops.c  |  4 +--
 drivers/ide/ide-probe.c | 71 +++++++++++++++++++++++++++++++++++--------------
 drivers/ide/ide-proc.c  |  2 +-
 drivers/ide/ide.c       |  2 +-
 drivers/ide/scc_pata.c  |  5 ++--
 include/linux/ide.h     |  4 +--
 7 files changed, 65 insertions(+), 33 deletions(-)

(limited to 'drivers/ide/ide-acpi.c')

diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index f89b6ecf7d1a..fd155b8a256c 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -656,7 +656,7 @@ void ide_acpi_set_state(ide_hwif_t *hwif, int on)
 	if (on)
 		acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0);
 	for (unit = 0; unit < MAX_DRIVES; ++unit) {
-		ide_drive_t *drive = &hwif->drives[unit];
+		ide_drive_t *drive = hwif->devices[unit];
 
 		if (!drive->acpidata->obj_handle)
 			drive->acpidata->obj_handle = ide_acpi_drive_get_handle(drive);
@@ -711,14 +711,14 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif)
 	 * for both drives, regardless whether they are connected
 	 * or not.
 	 */
-	hwif->drives[0].acpidata = &hwif->acpidata->master;
-	hwif->drives[1].acpidata = &hwif->acpidata->slave;
+	hwif->devices[0]->acpidata = &hwif->acpidata->master;
+	hwif->devices[1]->acpidata = &hwif->acpidata->slave;
 
 	/*
 	 * Send IDENTIFY for each drive
 	 */
 	for (i = 0; i < MAX_DRIVES; i++) {
-		drive = &hwif->drives[i];
+		drive = hwif->devices[i];
 
 		memset(drive->acpidata, 0, sizeof(*drive->acpidata));
 
@@ -745,7 +745,7 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif)
 	ide_acpi_push_timing(hwif);
 
 	for (i = 0; i < MAX_DRIVES; i++) {
-		drive = &hwif->drives[i];
+		drive = hwif->devices[i];
 
 		if (drive->dev_flags & IDE_DFLAG_PRESENT)
 			/* Execute ACPI startup code */
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index 1bcb9484f49e..26b58d15c4e6 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -1111,7 +1111,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
 		prepare_to_wait(&ide_park_wq, &wait, TASK_UNINTERRUPTIBLE);
 		timeout = jiffies;
 		for (unit = 0; unit < MAX_DRIVES; unit++) {
-			ide_drive_t *tdrive = &hwif->drives[unit];
+			ide_drive_t *tdrive = hwif->devices[unit];
 
 			if (tdrive->dev_flags & IDE_DFLAG_PRESENT &&
 			    tdrive->dev_flags & IDE_DFLAG_PARKED &&
@@ -1134,7 +1134,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
 	 * for any of the drives on this interface.
 	 */
 	for (unit = 0; unit < MAX_DRIVES; ++unit)
-		pre_reset(&hwif->drives[unit]);
+		pre_reset(hwif->devices[unit]);
 
 	if (io_ports->ctl_addr == 0) {
 		spin_unlock_irqrestore(&hwif->lock, flags);
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 00c7e5a67bd1..006e601cafb8 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -463,7 +463,7 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
 	if (ide_read_device(drive) != drive->select && present == 0) {
 		if (drive->dn & 1) {
 			/* exit with drive0 selected */
-			SELECT_DRIVE(&hwif->drives[0]);
+			SELECT_DRIVE(hwif->devices[0]);
 			/* allow ATA_BUSY to assert & clear */
 			msleep(50);
 		}
@@ -509,7 +509,7 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
 	}
 	if (drive->dn & 1) {
 		/* exit with drive0 selected */
-		SELECT_DRIVE(&hwif->drives[0]);
+		SELECT_DRIVE(hwif->devices[0]);
 		msleep(50);
 		/* ensure drive irq is clear */
 		(void)tp_ops->read_status(hwif);
@@ -715,7 +715,7 @@ static int ide_port_wait_ready(ide_hwif_t *hwif)
 
 	/* Now make sure both master & slave are ready */
 	for (unit = 0; unit < MAX_DRIVES; unit++) {
-		ide_drive_t *drive = &hwif->drives[unit];
+		ide_drive_t *drive = hwif->devices[unit];
 
 		/* Ignore disks that we will not probe for later. */
 		if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0 ||
@@ -733,7 +733,7 @@ static int ide_port_wait_ready(ide_hwif_t *hwif)
 out:
 	/* Exit function with master reselected (let's be sane) */
 	if (unit)
-		SELECT_DRIVE(&hwif->drives[0]);
+		SELECT_DRIVE(hwif->devices[0]);
 
 	return rc;
 }
@@ -749,7 +749,7 @@ out:
 
 void ide_undecoded_slave(ide_drive_t *dev1)
 {
-	ide_drive_t *dev0 = &dev1->hwif->drives[0];
+	ide_drive_t *dev0 = dev1->hwif->devices[0];
 
 	if ((dev1->dn & 1) == 0 || (dev0->dev_flags & IDE_DFLAG_PRESENT) == 0)
 		return;
@@ -784,8 +784,8 @@ static int ide_probe_port(ide_hwif_t *hwif)
 
 	BUG_ON(hwif->present);
 
-	if ((hwif->drives[0].dev_flags & IDE_DFLAG_NOPROBE) &&
-	    (hwif->drives[1].dev_flags & IDE_DFLAG_NOPROBE))
+	if ((hwif->devices[0]->dev_flags & IDE_DFLAG_NOPROBE) &&
+	    (hwif->devices[1]->dev_flags & IDE_DFLAG_NOPROBE))
 		return -EACCES;
 
 	/*
@@ -807,7 +807,7 @@ static int ide_probe_port(ide_hwif_t *hwif)
 	 * but a lot of cdrom drives are configured as single slaves.
 	 */
 	for (unit = 0; unit < MAX_DRIVES; ++unit) {
-		ide_drive_t *drive = &hwif->drives[unit];
+		ide_drive_t *drive = hwif->devices[unit];
 
 		(void) probe_for_drive(drive);
 		if (drive->dev_flags & IDE_DFLAG_PRESENT)
@@ -832,7 +832,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
 	int unit;
 
 	for (unit = 0; unit < MAX_DRIVES; unit++) {
-		ide_drive_t *drive = &hwif->drives[unit];
+		ide_drive_t *drive = hwif->devices[unit];
 
 		if (drive->dev_flags & IDE_DFLAG_PRESENT) {
 			if (port_ops && port_ops->quirkproc)
@@ -841,7 +841,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
 	}
 
 	for (unit = 0; unit < MAX_DRIVES; ++unit) {
-		ide_drive_t *drive = &hwif->drives[unit];
+		ide_drive_t *drive = hwif->devices[unit];
 
 		if (drive->dev_flags & IDE_DFLAG_PRESENT) {
 			ide_set_max_pio(drive);
@@ -854,7 +854,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
 	}
 
 	for (unit = 0; unit < MAX_DRIVES; ++unit) {
-		ide_drive_t *drive = &hwif->drives[unit];
+		ide_drive_t *drive = hwif->devices[unit];
 
 		if ((hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) ||
 		    drive->id[ATA_ID_DWORD_IO])
@@ -931,7 +931,7 @@ static int ide_port_setup_devices(ide_hwif_t *hwif)
 
 	mutex_lock(&ide_cfg_mtx);
 	for (i = 0; i < MAX_DRIVES; i++) {
-		ide_drive_t *drive = &hwif->drives[i];
+		ide_drive_t *drive = hwif->devices[i];
 
 		if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
 			continue;
@@ -1017,7 +1017,7 @@ static struct kobject *ata_probe(dev_t dev, int *part, void *data)
 {
 	ide_hwif_t *hwif = data;
 	int unit = *part >> PARTN_BITS;
-	ide_drive_t *drive = &hwif->drives[unit];
+	ide_drive_t *drive = hwif->devices[unit];
 
 	if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
 		return NULL;
@@ -1164,7 +1164,7 @@ static void hwif_register_devices(ide_hwif_t *hwif)
 	unsigned int i;
 
 	for (i = 0; i < MAX_DRIVES; i++) {
-		ide_drive_t *drive = &hwif->drives[i];
+		ide_drive_t *drive = hwif->devices[i];
 		struct device *dev = &drive->gendev;
 		int ret;
 
@@ -1190,7 +1190,7 @@ static void ide_port_init_devices(ide_hwif_t *hwif)
 	int i;
 
 	for (i = 0; i < MAX_DRIVES; i++) {
-		ide_drive_t *drive = &hwif->drives[i];
+		ide_drive_t *drive = hwif->devices[i];
 
 		drive->dn = i + hwif->channel * 2;
 
@@ -1285,7 +1285,7 @@ static void ide_port_init_devices_data(ide_hwif_t *hwif)
 	int unit;
 
 	for (unit = 0; unit < MAX_DRIVES; ++unit) {
-		ide_drive_t *drive = &hwif->drives[unit];
+		ide_drive_t *drive = hwif->devices[unit];
 		u8 j = (hwif->index * MAX_DRIVES) + unit;
 
 		memset(drive, 0, sizeof(*drive));
@@ -1309,9 +1309,6 @@ static void ide_port_init_devices_data(ide_hwif_t *hwif)
 
 static void ide_init_port_data(ide_hwif_t *hwif, unsigned int index)
 {
-	/* bulk initialize hwif & drive info with zeros */
-	memset(hwif, 0, sizeof(ide_hwif_t));
-
 	/* fill in any non-zero initial values */
 	hwif->index	= index;
 	hwif->major	= ide_hwif_to_major[index];
@@ -1388,6 +1385,34 @@ static void ide_free_port_slot(int idx)
 	mutex_unlock(&ide_cfg_mtx);
 }
 
+static void ide_port_free_devices(ide_hwif_t *hwif)
+{
+	int i;
+
+	for (i = 0; i < MAX_DRIVES; i++)
+		kfree(hwif->devices[i]);
+}
+
+static int ide_port_alloc_devices(ide_hwif_t *hwif, int node)
+{
+	int i;
+
+	for (i = 0; i < MAX_DRIVES; i++) {
+		ide_drive_t *drive;
+
+		drive = kzalloc_node(sizeof(*drive), GFP_KERNEL, node);
+		if (drive == NULL)
+			goto out_nomem;
+
+		hwif->devices[i] = drive;
+	}
+	return 0;
+
+out_nomem:
+	ide_port_free_devices(hwif);
+	return -ENOMEM;
+}
+
 struct ide_host *ide_host_alloc(const struct ide_port_info *d, hw_regs_t **hws)
 {
 	struct ide_host *host;
@@ -1410,6 +1435,11 @@ struct ide_host *ide_host_alloc(const struct ide_port_info *d, hw_regs_t **hws)
 		if (hwif == NULL)
 			continue;
 
+		if (ide_port_alloc_devices(hwif, node) < 0) {
+			kfree(hwif);
+			continue;
+		}
+
 		idx = ide_find_port_slot(d);
 		if (idx < 0) {
 			printk(KERN_ERR "%s: no free slot for interface\n",
@@ -1575,7 +1605,7 @@ static void __ide_port_unregister_devices(ide_hwif_t *hwif)
 	int i;
 
 	for (i = 0; i < MAX_DRIVES; i++) {
-		ide_drive_t *drive = &hwif->drives[i];
+		ide_drive_t *drive = hwif->devices[i];
 
 		if (drive->dev_flags & IDE_DFLAG_PRESENT) {
 			device_unregister(&drive->gendev);
@@ -1651,6 +1681,7 @@ void ide_host_free(struct ide_host *host)
 		if (hwif == NULL)
 			continue;
 
+		ide_port_free_devices(hwif);
 		ide_free_port_slot(hwif->index);
 		kfree(hwif);
 	}
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index d985a9ec6bef..1dc827fa7061 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -599,7 +599,7 @@ void ide_proc_port_register_devices(ide_hwif_t *hwif)
 	char name[64];
 
 	for (d = 0; d < MAX_DRIVES; d++) {
-		ide_drive_t *drive = &hwif->drives[d];
+		ide_drive_t *drive = hwif->devices[d];
 
 		if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0 || drive->proc)
 			continue;
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 6971c285a212..8a6f893d127e 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -497,7 +497,7 @@ void ide_port_apply_params(ide_hwif_t *hwif)
 	}
 
 	for (i = 0; i < MAX_DRIVES; i++)
-		ide_dev_apply_params(&hwif->drives[i], i);
+		ide_dev_apply_params(hwif->devices[i], i);
 }
 
 /*
diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c
index 90574ab76345..841164d7d3b9 100644
--- a/drivers/ide/scc_pata.c
+++ b/drivers/ide/scc_pata.c
@@ -259,7 +259,7 @@ static void scc_set_dma_mode(ide_drive_t *drive, const u8 speed)
 	unsigned long scrcst_port = ctl_base + 0x014;
 	unsigned long udenvt_port = ctl_base + 0x018;
 	unsigned long tdvhsel_port   = ctl_base + 0x020;
-	int is_slave = (&hwif->drives[1] == drive);
+	int is_slave = drive->dn & 1;
 	int offset, idx;
 	unsigned long reg;
 	unsigned long jcactsel;
@@ -413,7 +413,8 @@ static int scc_dma_end(ide_drive_t *drive)
 				if (rq)
 					rq->errors |= ERROR_RESET;
 				for (unit = 0; unit < MAX_DRIVES; unit++) {
-					ide_drive_t *drive = &hwif->drives[unit];
+					ide_drive_t *drive = hwif->devices[unit];
+
 					drive->crc_count++;
 				}
 			}
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 9f6fe1fe7a6c..f00086b10be3 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -753,7 +753,7 @@ typedef struct hwif_s {
 
 	unsigned long	sata_scr[SATA_NR_PORTS];
 
-	ide_drive_t	drives[MAX_DRIVES];	/* drive info */
+	ide_drive_t	*devices[MAX_DRIVES];
 
 	u8 major;	/* our major number */
 	u8 index;	/* 0 for ide0; 1 for ide1; ... */
@@ -1600,7 +1600,7 @@ static inline int hwif_to_node(ide_hwif_t *hwif)
 
 static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
 {
-	ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1];
+	ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
 
 	return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
 }
-- 
cgit v1.2.3


From 2bd24a1cfc99d242c2cff9a6b74ca49fcaac3fb6 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Tue, 6 Jan 2009 17:20:56 +0100
Subject: ide: add port and host iterators

Add ide_port_for_each_dev() / ide_host_for_each_port() iterators
and update IDE code to use them.

While at it:
- s/unit/i/ variable in ide_port_wait_ready(), ide_probe_port(),
  ide_port_tune_devices(), ide_port_init_devices_data(), do_reset1(),
  ide_acpi_set_state() and scc_dma_end()
- s/d/i/ variable in ide_proc_port_register_devices()

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-acpi.c  | 14 +++-----
 drivers/ide/ide-iops.c  | 11 +++---
 drivers/ide/ide-probe.c | 96 ++++++++++++++++++++-----------------------------
 drivers/ide/ide-proc.c  |  7 ++--
 drivers/ide/ide.c       |  5 +--
 drivers/ide/scc_pata.c  |  8 ++---
 include/linux/ide.h     | 11 ++++--
 7 files changed, 67 insertions(+), 85 deletions(-)

(limited to 'drivers/ide/ide-acpi.c')

diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index fd155b8a256c..2f9e941968d6 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -641,7 +641,8 @@ void ide_acpi_push_timing(ide_hwif_t *hwif)
  */
 void ide_acpi_set_state(ide_hwif_t *hwif, int on)
 {
-	int unit;
+	ide_drive_t *drive;
+	int i;
 
 	if (ide_noacpi || ide_noacpi_psx)
 		return;
@@ -655,9 +656,8 @@ void ide_acpi_set_state(ide_hwif_t *hwif, int on)
 	/* channel first and then drives for power on and verse versa for power off */
 	if (on)
 		acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0);
-	for (unit = 0; unit < MAX_DRIVES; ++unit) {
-		ide_drive_t *drive = hwif->devices[unit];
 
+	ide_port_for_each_dev(i, drive, hwif) {
 		if (!drive->acpidata->obj_handle)
 			drive->acpidata->obj_handle = ide_acpi_drive_get_handle(drive);
 
@@ -717,9 +717,7 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif)
 	/*
 	 * Send IDENTIFY for each drive
 	 */
-	for (i = 0; i < MAX_DRIVES; i++) {
-		drive = hwif->devices[i];
-
+	ide_port_for_each_dev(i, drive, hwif) {
 		memset(drive->acpidata, 0, sizeof(*drive->acpidata));
 
 		if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
@@ -744,9 +742,7 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif)
 	ide_acpi_get_timing(hwif);
 	ide_acpi_push_timing(hwif);
 
-	for (i = 0; i < MAX_DRIVES; i++) {
-		drive = hwif->devices[i];
-
+	ide_port_for_each_dev(i, drive, hwif) {
 		if (drive->dev_flags & IDE_DFLAG_PRESENT)
 			/* Execute ACPI startup code */
 			ide_acpi_exec_tfs(drive);
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index 26b58d15c4e6..1a22c31ce7ac 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -1081,8 +1081,9 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
 	struct ide_io_ports *io_ports = &hwif->io_ports;
 	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
 	const struct ide_port_ops *port_ops;
+	ide_drive_t *tdrive;
 	unsigned long flags, timeout;
-	unsigned int unit;
+	int i;
 	DEFINE_WAIT(wait);
 
 	spin_lock_irqsave(&hwif->lock, flags);
@@ -1110,9 +1111,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
 
 		prepare_to_wait(&ide_park_wq, &wait, TASK_UNINTERRUPTIBLE);
 		timeout = jiffies;
-		for (unit = 0; unit < MAX_DRIVES; unit++) {
-			ide_drive_t *tdrive = hwif->devices[unit];
-
+		ide_port_for_each_dev(i, tdrive, hwif) {
 			if (tdrive->dev_flags & IDE_DFLAG_PRESENT &&
 			    tdrive->dev_flags & IDE_DFLAG_PARKED &&
 			    time_after(tdrive->sleep, timeout))
@@ -1133,8 +1132,8 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
 	 * First, reset any device state data we were maintaining
 	 * for any of the drives on this interface.
 	 */
-	for (unit = 0; unit < MAX_DRIVES; ++unit)
-		pre_reset(hwif->devices[unit]);
+	ide_port_for_each_dev(i, tdrive, hwif)
+		pre_reset(tdrive);
 
 	if (io_ports->ctl_addr == 0) {
 		spin_unlock_irqrestore(&hwif->lock, flags);
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 006e601cafb8..e688ca1c967c 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -697,7 +697,8 @@ out:
 
 static int ide_port_wait_ready(ide_hwif_t *hwif)
 {
-	int unit, rc;
+	ide_drive_t *drive;
+	int i, rc;
 
 	printk(KERN_DEBUG "Probing IDE interface %s...\n", hwif->name);
 
@@ -714,9 +715,7 @@ static int ide_port_wait_ready(ide_hwif_t *hwif)
 		return rc;
 
 	/* Now make sure both master & slave are ready */
-	for (unit = 0; unit < MAX_DRIVES; unit++) {
-		ide_drive_t *drive = hwif->devices[unit];
-
+	ide_port_for_each_dev(i, drive, hwif) {
 		/* Ignore disks that we will not probe for later. */
 		if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0 ||
 		    (drive->dev_flags & IDE_DFLAG_PRESENT)) {
@@ -732,7 +731,7 @@ static int ide_port_wait_ready(ide_hwif_t *hwif)
 	}
 out:
 	/* Exit function with master reselected (let's be sane) */
-	if (unit)
+	if (i)
 		SELECT_DRIVE(hwif->devices[0]);
 
 	return rc;
@@ -778,9 +777,10 @@ EXPORT_SYMBOL_GPL(ide_undecoded_slave);
 
 static int ide_probe_port(ide_hwif_t *hwif)
 {
+	ide_drive_t *drive;
 	unsigned long flags;
 	unsigned int irqd;
-	int unit, rc = -ENODEV;
+	int i, rc = -ENODEV;
 
 	BUG_ON(hwif->present);
 
@@ -806,9 +806,7 @@ static int ide_probe_port(ide_hwif_t *hwif)
 	 * Second drive should only exist if first drive was found,
 	 * but a lot of cdrom drives are configured as single slaves.
 	 */
-	for (unit = 0; unit < MAX_DRIVES; ++unit) {
-		ide_drive_t *drive = hwif->devices[unit];
-
+	ide_port_for_each_dev(i, drive, hwif) {
 		(void) probe_for_drive(drive);
 		if (drive->dev_flags & IDE_DFLAG_PRESENT)
 			rc = 0;
@@ -829,20 +827,17 @@ static int ide_probe_port(ide_hwif_t *hwif)
 static void ide_port_tune_devices(ide_hwif_t *hwif)
 {
 	const struct ide_port_ops *port_ops = hwif->port_ops;
-	int unit;
-
-	for (unit = 0; unit < MAX_DRIVES; unit++) {
-		ide_drive_t *drive = hwif->devices[unit];
+	ide_drive_t *drive;
+	int i;
 
+	ide_port_for_each_dev(i, drive, hwif) {
 		if (drive->dev_flags & IDE_DFLAG_PRESENT) {
 			if (port_ops && port_ops->quirkproc)
 				port_ops->quirkproc(drive);
 		}
 	}
 
-	for (unit = 0; unit < MAX_DRIVES; ++unit) {
-		ide_drive_t *drive = hwif->devices[unit];
-
+	ide_port_for_each_dev(i, drive, hwif) {
 		if (drive->dev_flags & IDE_DFLAG_PRESENT) {
 			ide_set_max_pio(drive);
 
@@ -853,9 +848,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
 		}
 	}
 
-	for (unit = 0; unit < MAX_DRIVES; ++unit) {
-		ide_drive_t *drive = hwif->devices[unit];
-
+	ide_port_for_each_dev(i, drive, hwif) {
 		if ((hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) ||
 		    drive->id[ATA_ID_DWORD_IO])
 			drive->dev_flags |= IDE_DFLAG_NO_IO_32BIT;
@@ -927,12 +920,11 @@ static DEFINE_MUTEX(ide_cfg_mtx);
  */
 static int ide_port_setup_devices(ide_hwif_t *hwif)
 {
+	ide_drive_t *drive;
 	int i, j = 0;
 
 	mutex_lock(&ide_cfg_mtx);
-	for (i = 0; i < MAX_DRIVES; i++) {
-		ide_drive_t *drive = hwif->devices[i];
-
+	ide_port_for_each_dev(i, drive, hwif) {
 		if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
 			continue;
 
@@ -1161,10 +1153,10 @@ out:
 
 static void hwif_register_devices(ide_hwif_t *hwif)
 {
+	ide_drive_t *drive;
 	unsigned int i;
 
-	for (i = 0; i < MAX_DRIVES; i++) {
-		ide_drive_t *drive = hwif->devices[i];
+	ide_port_for_each_dev(i, drive, hwif) {
 		struct device *dev = &drive->gendev;
 		int ret;
 
@@ -1187,11 +1179,10 @@ static void hwif_register_devices(ide_hwif_t *hwif)
 static void ide_port_init_devices(ide_hwif_t *hwif)
 {
 	const struct ide_port_ops *port_ops = hwif->port_ops;
+	ide_drive_t *drive;
 	int i;
 
-	for (i = 0; i < MAX_DRIVES; i++) {
-		ide_drive_t *drive = hwif->devices[i];
-
+	ide_port_for_each_dev(i, drive, hwif) {
 		drive->dn = i + hwif->channel * 2;
 
 		if (hwif->host_flags & IDE_HFLAG_IO_32BIT)
@@ -1282,16 +1273,16 @@ static const u8 ide_hwif_to_major[] =
 
 static void ide_port_init_devices_data(ide_hwif_t *hwif)
 {
-	int unit;
+	ide_drive_t *drive;
+	int i;
 
-	for (unit = 0; unit < MAX_DRIVES; ++unit) {
-		ide_drive_t *drive = hwif->devices[unit];
-		u8 j = (hwif->index * MAX_DRIVES) + unit;
+	ide_port_for_each_dev(i, drive, hwif) {
+		u8 j = (hwif->index * MAX_DRIVES) + i;
 
 		memset(drive, 0, sizeof(*drive));
 
 		drive->media			= ide_disk;
-		drive->select			= (unit << 4) | ATA_DEVICE_OBS;
+		drive->select			= (i << 4) | ATA_DEVICE_OBS;
 		drive->hwif			= hwif;
 		drive->ready_stat		= ATA_DRDY;
 		drive->bad_wstat		= BAD_W_STAT;
@@ -1387,10 +1378,11 @@ static void ide_free_port_slot(int idx)
 
 static void ide_port_free_devices(ide_hwif_t *hwif)
 {
+	ide_drive_t *drive;
 	int i;
 
-	for (i = 0; i < MAX_DRIVES; i++)
-		kfree(hwif->devices[i]);
+	ide_port_for_each_dev(i, drive, hwif)
+		kfree(drive);
 }
 
 static int ide_port_alloc_devices(ide_hwif_t *hwif, int node)
@@ -1478,9 +1470,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 	ide_hwif_t *hwif, *mate = NULL;
 	int i, j = 0;
 
-	for (i = 0; i < MAX_HOST_PORTS; i++) {
-		hwif = host->ports[i];
-
+	ide_host_for_each_port(i, hwif, host) {
 		if (hwif == NULL) {
 			mate = NULL;
 			continue;
@@ -1506,9 +1496,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 		ide_port_init_devices(hwif);
 	}
 
-	for (i = 0; i < MAX_HOST_PORTS; i++) {
-		hwif = host->ports[i];
-
+	ide_host_for_each_port(i, hwif, host) {
 		if (hwif == NULL)
 			continue;
 
@@ -1523,9 +1511,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 			ide_port_tune_devices(hwif);
 	}
 
-	for (i = 0; i < MAX_HOST_PORTS; i++) {
-		hwif = host->ports[i];
-
+	ide_host_for_each_port(i, hwif, host) {
 		if (hwif == NULL)
 			continue;
 
@@ -1550,9 +1536,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 			ide_acpi_port_init_devices(hwif);
 	}
 
-	for (i = 0; i < MAX_HOST_PORTS; i++) {
-		hwif = host->ports[i];
-
+	ide_host_for_each_port(i, hwif, host) {
 		if (hwif == NULL)
 			continue;
 
@@ -1560,9 +1544,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
 			hwif_register_devices(hwif);
 	}
 
-	for (i = 0; i < MAX_HOST_PORTS; i++) {
-		hwif = host->ports[i];
-
+	ide_host_for_each_port(i, hwif, host) {
 		if (hwif == NULL)
 			continue;
 
@@ -1602,11 +1584,10 @@ EXPORT_SYMBOL_GPL(ide_host_add);
 
 static void __ide_port_unregister_devices(ide_hwif_t *hwif)
 {
+	ide_drive_t *drive;
 	int i;
 
-	for (i = 0; i < MAX_DRIVES; i++) {
-		ide_drive_t *drive = hwif->devices[i];
-
+	ide_port_for_each_dev(i, drive, hwif) {
 		if (drive->dev_flags & IDE_DFLAG_PRESENT) {
 			device_unregister(&drive->gendev);
 			wait_for_completion(&drive->gendev_rel_comp);
@@ -1675,9 +1656,7 @@ void ide_host_free(struct ide_host *host)
 	ide_hwif_t *hwif;
 	int i;
 
-	for (i = 0; i < MAX_HOST_PORTS; i++) {
-		hwif = host->ports[i];
-
+	ide_host_for_each_port(i, hwif, host) {
 		if (hwif == NULL)
 			continue;
 
@@ -1692,11 +1671,12 @@ EXPORT_SYMBOL_GPL(ide_host_free);
 
 void ide_host_remove(struct ide_host *host)
 {
+	ide_hwif_t *hwif;
 	int i;
 
-	for (i = 0; i < MAX_HOST_PORTS; i++) {
-		if (host->ports[i])
-			ide_unregister(host->ports[i]);
+	ide_host_for_each_port(i, hwif, host) {
+		if (hwif)
+			ide_unregister(hwif);
 	}
 
 	ide_host_free(host);
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index 1dc827fa7061..1d8978b3314a 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -593,14 +593,13 @@ EXPORT_SYMBOL(ide_proc_unregister_driver);
 
 void ide_proc_port_register_devices(ide_hwif_t *hwif)
 {
-	int	d;
 	struct proc_dir_entry *ent;
 	struct proc_dir_entry *parent = hwif->proc;
+	ide_drive_t *drive;
 	char name[64];
+	int i;
 
-	for (d = 0; d < MAX_DRIVES; d++) {
-		ide_drive_t *drive = hwif->devices[d];
-
+	ide_port_for_each_dev(i, drive, hwif) {
 		if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0 || drive->proc)
 			continue;
 
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 8a6f893d127e..258805da15c3 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -488,6 +488,7 @@ MODULE_PARM_DESC(ignore_cable, "ignore cable detection");
 
 void ide_port_apply_params(ide_hwif_t *hwif)
 {
+	ide_drive_t *drive;
 	int i;
 
 	if (ide_ignore_cable & (1 << hwif->index)) {
@@ -496,8 +497,8 @@ void ide_port_apply_params(ide_hwif_t *hwif)
 		hwif->cbl = ATA_CBL_PATA40_SHORT;
 	}
 
-	for (i = 0; i < MAX_DRIVES; i++)
-		ide_dev_apply_params(hwif->devices[i], i);
+	ide_port_for_each_dev(i, drive, hwif)
+		ide_dev_apply_params(drive, i);
 }
 
 /*
diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c
index 841164d7d3b9..5d53850c79d7 100644
--- a/drivers/ide/scc_pata.c
+++ b/drivers/ide/scc_pata.c
@@ -406,17 +406,17 @@ static int scc_dma_end(ide_drive_t *drive)
 			data_loss = 1;
 			if (retry++) {
 				struct request *rq = hwif->rq;
-				int unit;
+				ide_drive_t *drive;
+				int i;
+
 				/* ERROR_RESET and drive->crc_count are needed
 				 * to reduce DMA transfer mode in retry process.
 				 */
 				if (rq)
 					rq->errors |= ERROR_RESET;
-				for (unit = 0; unit < MAX_DRIVES; unit++) {
-					ide_drive_t *drive = hwif->devices[unit];
 
+				ide_port_for_each_dev(i, drive, hwif)
 					drive->crc_count++;
-				}
 			}
 		}
 	}
diff --git a/include/linux/ide.h b/include/linux/ide.h
index f00086b10be3..4cecd923fc79 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -753,7 +753,7 @@ typedef struct hwif_s {
 
 	unsigned long	sata_scr[SATA_NR_PORTS];
 
-	ide_drive_t	*devices[MAX_DRIVES];
+	ide_drive_t	*devices[MAX_DRIVES + 1];
 
 	u8 major;	/* our major number */
 	u8 index;	/* 0 for ide0; 1 for ide1; ... */
@@ -861,7 +861,7 @@ typedef struct hwif_s {
 #define MAX_HOST_PORTS 4
 
 struct ide_host {
-	ide_hwif_t	*ports[MAX_HOST_PORTS];
+	ide_hwif_t	*ports[MAX_HOST_PORTS + 1];
 	unsigned int	n_ports;
 	struct device	*dev[2];
 	unsigned int	(*init_chipset)(struct pci_dev *);
@@ -1604,4 +1604,11 @@ static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
 
 	return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
 }
+
+#define ide_port_for_each_dev(i, dev, port) \
+	for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
+
+#define ide_host_for_each_port(i, port, host) \
+	for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
+
 #endif /* _IDE_H */
-- 
cgit v1.2.3