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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-04-26 17:36:43 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-04-26 17:36:43 +0200 |
| commit | 4764b68405ac918e9ac9939b1a2d1469102e5af7 (patch) | |
| tree | 606d93fb1782c53c27f8703b38583559ab8b5d02 /drivers/ide/pci/sis5513.c | |
| parent | eb7a07e8d6580ea498cac53acafe42c080af4d06 (diff) | |
| download | lwn-4764b68405ac918e9ac9939b1a2d1469102e5af7.tar.gz lwn-4764b68405ac918e9ac9939b1a2d1469102e5af7.zip | |
sis5513: fail early for unsupported chipsets
* Factor out chipset family detection from init_chipset_sis5513()
to sis_find_family().
* Use sis_find_family() in sis5513_init_one() to fail early if the
chipset is unsupported.
* Keep a local copy sis5513_chipset in sis5513_init_one()
and set .udma_mask according to chipset family.
* Remove no longer need ->ultra_mask setting from init_hwif_sis5513().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/sis5513.c')
| -rw-r--r-- | drivers/ide/pci/sis5513.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c index 65ee2ccabed6..181b647e5ca9 100644 --- a/drivers/ide/pci/sis5513.c +++ b/drivers/ide/pci/sis5513.c @@ -359,9 +359,7 @@ static u8 sis5513_ata133_udma_filter(ide_drive_t *drive) return (regdw & 0x08) ? ATA_UDMA6 : ATA_UDMA5; } -/* Chip detection and general config */ -static unsigned int __devinit init_chipset_sis5513(struct pci_dev *dev, - const char *name) +static int __devinit sis_find_family(struct pci_dev *dev) { struct pci_dev *host; int i = 0; @@ -442,14 +440,16 @@ static unsigned int __devinit init_chipset_sis5513(struct pci_dev *dev, } } - if (!chipset_family) - return -1; + return chipset_family; +} +static unsigned int __devinit init_chipset_sis5513(struct pci_dev *dev, + const char *name) +{ /* Make general config ops here 1/ tell IDE channels to operate in Compatibility mode only 2/ tell old chips to allow per drive IDE timings */ - { u8 reg; u16 regw; @@ -495,7 +495,6 @@ static unsigned int __devinit init_chipset_sis5513(struct pci_dev *dev, pci_write_config_byte(dev, 0x52, reg|0x08); break; } - } return 0; } @@ -546,8 +545,6 @@ static u8 __devinit ata66_sis5513(ide_hwif_t *hwif) static void __devinit init_hwif_sis5513(ide_hwif_t *hwif) { - u8 udma_rates[] = { 0x00, 0x00, 0x07, 0x1f, 0x3f, 0x3f, 0x7f, 0x7f }; - hwif->set_pio_mode = &sis_set_pio_mode; hwif->set_dma_mode = &sis_set_dma_mode; @@ -555,11 +552,6 @@ static void __devinit init_hwif_sis5513(ide_hwif_t *hwif) hwif->udma_filter = sis5513_ata133_udma_filter; hwif->cable_detect = ata66_sis5513; - - if (hwif->dma_base == 0) - return; - - hwif->ultra_mask = udma_rates[chipset_family]; } static const struct ide_port_info sis5513_chipset __devinitdata = { @@ -574,7 +566,15 @@ static const struct ide_port_info sis5513_chipset __devinitdata = { static int __devinit sis5513_init_one(struct pci_dev *dev, const struct pci_device_id *id) { - return ide_setup_pci_device(dev, &sis5513_chipset); + struct ide_port_info d = sis5513_chipset; + u8 udma_rates[] = { 0x00, 0x00, 0x07, 0x1f, 0x3f, 0x3f, 0x7f, 0x7f }; + + if (sis_find_family(dev) == 0) + return -ENOTSUPP; + + d.udma_mask = udma_rates[chipset_family]; + + return ide_setup_pci_device(dev, &d); } static const struct pci_device_id sis5513_pci_tbl[] = { |