diff options
Diffstat (limited to 'drivers/ide/ide-dma.c')
| -rw-r--r-- | drivers/ide/ide-dma.c | 26 |
1 files changed, 10 insertions, 16 deletions
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c index 5fe1d72ab45..865a2740a6e 100644 --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -349,9 +349,17 @@ EXPORT_SYMBOL_GPL(ide_destroy_dmatable); static int config_drive_for_dma (ide_drive_t *drive) { + ide_hwif_t *hwif = drive->hwif; struct hd_driveid *id = drive->id; - if ((id->capability & 1) && drive->hwif->autodma) { + /* consult the list of known "bad" drives */ + if (__ide_dma_bad_drive(drive)) + return -1; + + if (drive->media != ide_disk && hwif->atapi_dma == 0) + return -1; + + if ((id->capability & 1) && drive->autodma) { /* * Enable DMA on any drive that has * UltraDMA (mode 0/1/2/3/4/5/6) enabled @@ -514,20 +522,6 @@ int __ide_dma_on (ide_drive_t *drive) EXPORT_SYMBOL(__ide_dma_on); /** - * __ide_dma_check - check DMA setup - * @drive: drive to check - * - * Don't use - due for extermination - */ - -int __ide_dma_check (ide_drive_t *drive) -{ - return config_drive_for_dma(drive); -} - -EXPORT_SYMBOL(__ide_dma_check); - -/** * ide_dma_setup - begin a DMA phase * @drive: target device * @@ -1021,7 +1015,7 @@ void ide_setup_dma (ide_hwif_t *hwif, unsigned long dma_base, unsigned int num_p if (!hwif->dma_host_on) hwif->dma_host_on = &ide_dma_host_on; if (!hwif->ide_dma_check) - hwif->ide_dma_check = &__ide_dma_check; + hwif->ide_dma_check = &config_drive_for_dma; if (!hwif->dma_setup) hwif->dma_setup = &ide_dma_setup; if (!hwif->dma_exec_cmd) |