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| author | Jeff Garzik <jeff@garzik.org> | 2006-12-03 20:49:23 -0500 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-12-05 10:25:35 -0600 |
| commit | 00769ec40074b753c9b218c2ccaba2bfbfffe056 (patch) | |
| tree | b8a05cbdb85f7c4ca8e4368b74a66dfccc3a7b8d /drivers/scsi/megaraid.c | |
| parent | e42ebefee15894522f3a84045887573ebc9b764e (diff) | |
| download | lwn-00769ec40074b753c9b218c2ccaba2bfbfffe056.tar.gz lwn-00769ec40074b753c9b218c2ccaba2bfbfffe056.zip | |
[SCSI] megaraid: fix MMIO casts
megaraid's MMIO RD*/WR* macros directly call readl() and writel() with
an 'unsigned long' argument. This throws a warning, but is otherwise OK
because the 'unsigned long' is really the result of ioremap(). This
setup is also OK because the variable can hold an ioremap cookie /or/ a
PCI I/O port (PIO).
However, to fix the warning thrown when readl() and writel() are passed
an unsigned long cookie, I introduce 'void __iomem *mmio_base', holding
the same value as 'base'. This will silence the warnings, and also
cause an oops whenever these MMIO-only functions are ever accidentally
passed an I/O address.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/megaraid.c')
| -rw-r--r-- | drivers/scsi/megaraid.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c index 86099fde1b2a..77d9d3804ccf 100644 --- a/drivers/scsi/megaraid.c +++ b/drivers/scsi/megaraid.c @@ -73,10 +73,10 @@ static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT; module_param(max_mbox_busy_wait, ushort, 0); MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)"); -#define RDINDOOR(adapter) readl((adapter)->base + 0x20) -#define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C) -#define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20) -#define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C) +#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20) +#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C) +#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20) +#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C) /* * Global variables @@ -1386,7 +1386,8 @@ megaraid_isr_memmapped(int irq, void *devp) handled = 1; - while( RDINDOOR(adapter) & 0x02 ) cpu_relax(); + while( RDINDOOR(adapter) & 0x02 ) + cpu_relax(); mega_cmd_done(adapter, completed, nstatus, status); @@ -4668,6 +4669,8 @@ megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) host->host_no, mega_baseport, irq); adapter->base = mega_baseport; + if (flag & BOARD_MEMMAP) + adapter->mmio_base = (void __iomem *) mega_baseport; INIT_LIST_HEAD(&adapter->free_list); INIT_LIST_HEAD(&adapter->pending_list); |