diff options
| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-20 00:32:37 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-20 00:32:37 +0200 |
| commit | a02bfd3ce9342453441202028df44dc58f90e225 (patch) | |
| tree | 23ba048ae3ad526b7990c76d82f5d28a90daf5a5 /drivers/ide | |
| parent | 52c8136137bc98103249fa195aaacaf84a970d51 (diff) | |
ide: PCI BMDMA initialization fixes (take 2)
* Set hwif->dma_base only if allocation of extra ports succeeds.
While at it:
* Move setting of hwif->dma_{base,master} from ide_{mapped_mmio,iomio}_dma()
to ide_setup_dma().
* Rename 'dma_base' argument to 'base' in ide_setup_dma() (to make the code
obey 80-columns limit and increase its readability).
* Remove stale ide_setup_dma() comment.
v2:
* Change to allocate hwif->dmatable_cpu before reserving I/O ports missed
teardown code (spotted by Sergei). On the second thought this change is
actually unnecessary so revert it in v2.
* Make ide_release_dma_engine() void and remove needless comment.
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/ide-dma.c | 32 |
1 files changed, 10 insertions, 22 deletions
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c index 80b4f17f394..428f7a8a00b 100644 --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -901,10 +901,7 @@ void ide_dma_timeout (ide_drive_t *drive) EXPORT_SYMBOL(ide_dma_timeout); -/* - * Needed for allowing full modular support of ide-driver - */ -static int ide_release_dma_engine(ide_hwif_t *hwif) +static void ide_release_dma_engine(ide_hwif_t *hwif) { if (hwif->dmatable_cpu) { pci_free_consistent(hwif->pci_dev, @@ -913,7 +910,6 @@ static int ide_release_dma_engine(ide_hwif_t *hwif) hwif->dmatable_dma); hwif->dmatable_cpu = NULL; } - return 1; } static int ide_release_iomio_dma(ide_hwif_t *hwif) @@ -956,12 +952,6 @@ static int ide_mapped_mmio_dma(ide_hwif_t *hwif, unsigned long base, unsigned in { printk(KERN_INFO " %s: MMIO-DMA ", hwif->name); - hwif->dma_base = base; - - if(hwif->mate) - hwif->dma_master = (hwif->channel) ? hwif->mate->dma_base : base; - else - hwif->dma_master = base; return 0; } @@ -975,8 +965,6 @@ static int ide_iomio_dma(ide_hwif_t *hwif, unsigned long base, unsigned int port return 1; } - hwif->dma_base = base; - if (hwif->cds->extra) { hwif->extra_base = base + (hwif->channel ? 8 : 16); @@ -991,10 +979,6 @@ static int ide_iomio_dma(ide_hwif_t *hwif, unsigned long base, unsigned int port } } - if(hwif->mate) - hwif->dma_master = (hwif->channel) ? hwif->mate->dma_base:base; - else - hwif->dma_master = base; return 0; } @@ -1006,12 +990,9 @@ static int ide_dma_iobase(ide_hwif_t *hwif, unsigned long base, unsigned int por return ide_iomio_dma(hwif, base, ports); } -/* - * This can be called for a dynamically installed interface. Don't __init it - */ -void ide_setup_dma (ide_hwif_t *hwif, unsigned long dma_base, unsigned int num_ports) +void ide_setup_dma(ide_hwif_t *hwif, unsigned long base, unsigned num_ports) { - if (ide_dma_iobase(hwif, dma_base, num_ports)) + if (ide_dma_iobase(hwif, base, num_ports)) return; if (ide_allocate_dma_engine(hwif)) { @@ -1019,6 +1000,13 @@ void ide_setup_dma (ide_hwif_t *hwif, unsigned long dma_base, unsigned int num_p return; } + hwif->dma_base = base; + + if (hwif->mate) + hwif->dma_master = hwif->channel ? hwif->mate->dma_base : base; + else + hwif->dma_master = base; + if (!(hwif->dma_command)) hwif->dma_command = hwif->dma_base; if (!(hwif->dma_vendor1)) |