diff options
Diffstat (limited to 'drivers/ide/ide-dma.c')
| -rw-r--r-- | drivers/ide/ide-dma.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c index c3546fe9af63..9937fa7da546 100644 --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -798,9 +798,9 @@ static int ide_release_dma_engine(ide_hwif_t *hwif) static int ide_release_iomio_dma(ide_hwif_t *hwif) { - if ((hwif->dma_extra) && (hwif->channel == 0)) - release_region((hwif->dma_base + 16), hwif->dma_extra); release_region(hwif->dma_base, 8); + if (hwif->extra_ports) + release_region(hwif->extra_base, hwif->extra_ports); if (hwif->dma_base2) release_region(hwif->dma_base, 8); return 1; @@ -840,9 +840,7 @@ 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->cds->extra && hwif->channel == 0) - hwif->dma_extra = hwif->cds->extra; + hwif->dma_base = base; if(hwif->mate) hwif->dma_master = (hwif->channel) ? hwif->mate->dma_base : base; @@ -854,17 +852,29 @@ static int ide_mapped_mmio_dma(ide_hwif_t *hwif, unsigned long base, unsigned in static int ide_iomio_dma(ide_hwif_t *hwif, unsigned long base, unsigned int ports) { printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx", - hwif->name, base, base + ports - 1); + hwif->name, base, base + ports - 1); + if (!request_region(base, ports, hwif->name)) { printk(" -- Error, ports in use.\n"); return 1; } + hwif->dma_base = base; - if ((hwif->cds->extra) && (hwif->channel == 0)) { - request_region(base+16, hwif->cds->extra, hwif->cds->name); - hwif->dma_extra = hwif->cds->extra; + + if (hwif->cds->extra) { + hwif->extra_base = base + (hwif->channel ? 8 : 16); + + if (!hwif->mate || !hwif->mate->extra_ports) { + if (!request_region(hwif->extra_base, + hwif->cds->extra, hwif->cds->name)) { + printk(" -- Error, extra ports in use.\n"); + release_region(base, ports); + return 1; + } + hwif->extra_ports = hwif->cds->extra; + } } - + if(hwif->mate) hwif->dma_master = (hwif->channel) ? hwif->mate->dma_base : base; else @@ -874,6 +884,8 @@ static int ide_iomio_dma(ide_hwif_t *hwif, unsigned long base, unsigned int port { printk(" -- Error, secondary ports in use.\n"); release_region(base, ports); + if (hwif->extra_ports) + release_region(hwif->extra_base, hwif->extra_ports); return 1; } } |