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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-13 17:47:52 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-13 17:47:52 +0200 |
| commit | b9d9e61abb85ecf4e4aa55328b21eac17840a3fb (patch) | |
| tree | 2f021637a5e90ea01e3ad0aad24d39552ae89916 /drivers | |
| parent | 7bda292d12795877ade9a7ccc044a7bb0ea8e8b4 (diff) | |
| download | linux-b9d9e61abb85ecf4e4aa55328b21eac17840a3fb.tar.gz linux-b9d9e61abb85ecf4e4aa55328b21eac17840a3fb.tar.bz2 linux-b9d9e61abb85ecf4e4aa55328b21eac17840a3fb.zip | |
sgiioc4: 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.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ide/pci/sgiioc4.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c index 26352626c0e8..85ffaaa39b1b 100644 --- a/drivers/ide/pci/sgiioc4.c +++ b/drivers/ide/pci/sgiioc4.c @@ -587,8 +587,6 @@ static void __devinit ide_init_sgiioc4(ide_hwif_t * hwif) { hwif->mmio = 1; - hwif->atapi_dma = 1; - hwif->mwdma_mask = 0x04; hwif->pio_mask = 0x00; hwif->set_pio_mode = NULL; /* Sets timing for PIO mode */ hwif->set_dma_mode = &sgiioc4_set_dma_mode; @@ -602,6 +600,14 @@ ide_init_sgiioc4(ide_hwif_t * hwif) hwif->quirkproc = NULL; hwif->busproc = NULL; + hwif->INB = &sgiioc4_INB; + + if (hwif->dma_base == 0) + return; + + hwif->atapi_dma = 1; + hwif->mwdma_mask = 0x04; + hwif->dma_setup = &sgiioc4_ide_dma_setup; hwif->dma_start = &sgiioc4_ide_dma_start; hwif->ide_dma_end = &sgiioc4_ide_dma_end; @@ -613,8 +619,6 @@ ide_init_sgiioc4(ide_hwif_t * hwif) hwif->dma_host_off = &sgiioc4_dma_host_off; hwif->dma_lost_irq = &sgiioc4_dma_lost_irq; hwif->dma_timeout = &ide_dma_timeout; - - hwif->INB = &sgiioc4_INB; } static int __devinit @@ -684,8 +688,6 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev) /* Initializing chipset IRQ Registers */ writel(0x03, (void __iomem *)(irqport + IOC4_INTR_SET * 4)); - ide_init_sgiioc4(hwif); - hwif->autodma = 0; if (dma_base && ide_dma_sgiioc4(hwif, dma_base) == 0) { @@ -695,6 +697,8 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev) printk(KERN_INFO "%s: %s Bus-Master DMA disabled\n", hwif->name, DRV_NAME); + ide_init_sgiioc4(hwif); + if (probe_hwif_init(hwif)) return -EIO; |