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cs5535: add missing ->dma_base check 

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 <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2007-10-13 17:47:52 +02:00
parent 76bb7782c6
commit 7bda292d12
1 changed files with 7 additions and 7 deletions
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14
drivers/ide/pci/cs5535.c
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@ -190,12 +190,16 @@ static u8 __devinit cs5535_cable_detect(struct pci_dev *dev)
*/
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(ide_hwif_t *hwif)
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 = {