* Factor out disabling of "fast interrupt" prediction from init_hwif_hpt366() to hpt3xx_disable_fast_irq() helper. * Use hpt3xx_disable_fast_irq() in ->init_chipset instead of ->init_hwif method. This is a preparation for adding proper PCI PM support. While at it: * Cache chip type in chip_type variable in hpt3xx_disable_fast_irq(). There should be no functional changes caused by this patch. Cc: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxx> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> --- drivers/ide/pci/hpt366.c | 58 ++++++++++++++++++++++++++--------------------- 1 file changed, 33 insertions(+), 25 deletions(-) Index: b/drivers/ide/pci/hpt366.c =================================================================== --- a/drivers/ide/pci/hpt366.c +++ b/drivers/ide/pci/hpt366.c @@ -969,6 +969,36 @@ static int __devinit hpt37x_calibrate_dp return 1; } +static void __devinit hpt3xx_disable_fast_irq(struct pci_dev *dev, u8 mcr_addr) +{ + struct ide_host *host = pci_get_drvdata(dev); + struct hpt_info *info = host->host_priv + (&dev->dev == host->dev[1]); + u8 chip_type = info->chip_type; + u8 new_mcr, old_mcr = 0; + + /* + * Disable the "fast interrupt" prediction. Don't hold off + * on interrupts. (== 0x01 despite what the docs say) + */ + pci_read_config_byte(dev, mcr_addr + 1, &old_mcr); + + if (chip_type >= HPT374) + new_mcr = old_mcr & ~0x07; + else if (chip_type >= HPT370) { + new_mcr = old_mcr; + new_mcr &= ~0x02; +#ifdef HPT_DELAY_INTERRUPT + new_mcr &= ~0x01; +#else + new_mcr |= 0x01; +#endif + } else /* HPT366 and HPT368 */ + new_mcr = old_mcr & ~0x80; + + if (new_mcr != old_mcr) + pci_write_config_byte(dev, mcr_addr + 1, new_mcr); +} + static unsigned int __devinit init_chipset_hpt366(struct pci_dev *dev) { unsigned long io_base = pci_resource_start(dev, 4); @@ -1207,9 +1237,11 @@ static unsigned int __devinit init_chips * NOTE: This register is only writeable via I/O space. */ if (chip_type == HPT371N && clock == ATA_CLOCK_66MHZ) - outb(inb(io_base + 0x9c) | 0x04, io_base + 0x9c); + hpt3xx_disable_fast_irq(dev, 0x50); + hpt3xx_disable_fast_irq(dev, 0x54); + return dev->irq; } @@ -1265,7 +1297,6 @@ static void __devinit init_hwif_hpt366(i struct hpt_info *info = host->host_priv + (hwif->dev == host->dev[1]); int serialize = HPT_SERIALIZE_IO; u8 chip_type = info->chip_type; - u8 new_mcr, old_mcr = 0; /* Cache the channel's MISC. control registers' offset */ hwif->select_data = hwif->channel ? 0x54 : 0x50; @@ -1288,29 +1319,6 @@ static void __devinit init_hwif_hpt366(i /* Serialize access to this device if needed */ if (serialize && hwif->mate) hwif->serialized = hwif->mate->serialized = 1; - - /* - * Disable the "fast interrupt" prediction. Don't hold off - * on interrupts. (== 0x01 despite what the docs say) - */ - pci_read_config_byte(dev, hwif->select_data + 1, &old_mcr); - - if (info->chip_type >= HPT374) - new_mcr = old_mcr & ~0x07; - else if (info->chip_type >= HPT370) { - new_mcr = old_mcr; - new_mcr &= ~0x02; - -#ifdef HPT_DELAY_INTERRUPT - new_mcr &= ~0x01; -#else - new_mcr |= 0x01; -#endif - } else /* HPT366 and HPT368 */ - new_mcr = old_mcr & ~0x80; - - if (new_mcr != old_mcr) - pci_write_config_byte(dev, hwif->select_data + 1, new_mcr); } static int __devinit init_dma_hpt366(ide_hwif_t *hwif, -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html