[PATCH] cs5535: add missing ->dma_base check From: Bartlomiej Zolnierkiewicz If ->dma_base is not set (== PCI BAR4 cannot be reserved) then DMA hooks shouldn't be initialized or bad things will happen. Acked-by: Sergei Shtylyov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/pci/cs5535.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) Index: b/drivers/ide/pci/cs5535.c =================================================================== --- a/drivers/ide/pci/cs5535.c +++ b/drivers/ide/pci/cs5535.c @@ -190,12 +190,16 @@ static u8 __devinit cs5535_cable_detect( */ static void __devinit init_hwif_cs5535(ide_hwif_t *hwif) { - int i; - hwif->autodma = 0; hwif->set_pio_mode = &cs5535_set_pio_mode; hwif->set_dma_mode = &cs5535_set_dma_mode; + + hwif->drives[1].autotune = hwif->drives[0].autotune = 1; + + if (hwif->dma_base == 0) + return; + hwif->ide_dma_check = &cs5535_dma_check; hwif->atapi_dma = 1; @@ -207,11 +211,7 @@ static void __devinit init_hwif_cs5535(i if (!noautodma) hwif->autodma = 1; - /* just setting autotune and not worrying about bios timings */ - for (i = 0; i < 2; i++) { - hwif->drives[i].autotune = 1; - hwif->drives[i].autodma = hwif->autodma; - } + hwif->drives[1].autodma = hwif->drives[0].autodma = hwif->autodma; } static ide_pci_device_t cs5535_chipset __devinitdata = {