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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-03-31 20:15:21 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-03-31 20:15:21 +0200 |
| commit | 8a4a5738ba499083cf4c5668895efe220b1946d3 (patch) | |
| tree | 78272b711b31f43526d2c665478cc3bdb0b6e393 /drivers/ide/alim15x3.c | |
| parent | 7526efaafdc835b8d6b22aa1a302e14651373908 (diff) | |
| download | linux-8a4a5738ba499083cf4c5668895efe220b1946d3.tar.gz | |
ide: add ->dma_check method
* Add (an optional) ->dma_check method for checking if DMA can be used for a given command and fail DMA setup in ide_dma_prepare() if necessary. * Convert alim15x3 and trm290 host drivers to use ->dma_check. * Rename ali15x3_dma_setup() to ali_dma_check() while at it. There should be no functional changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/alim15x3.c')
| -rw-r--r-- | drivers/ide/alim15x3.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c index d3faf0b97f42..537da1cde16d 100644 --- a/drivers/ide/alim15x3.c +++ b/drivers/ide/alim15x3.c @@ -189,20 +189,20 @@ static void ali_set_dma_mode(ide_drive_t *drive, const u8 speed) } /** - * ali15x3_dma_setup - begin a DMA phase + * ali_dma_check - DMA check * @drive: target device * @cmd: command * * Returns 1 if the DMA cannot be performed, zero on success. */ -static int ali15x3_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) +static int ali_dma_check(ide_drive_t *drive, struct ide_cmd *cmd) { if (m5229_revision < 0xC2 && drive->media != ide_disk) { if (cmd->tf_flags & IDE_TFLAG_WRITE) return 1; /* try PIO instead of DMA */ } - return ide_dma_setup(drive, cmd); + return 0; } /** @@ -503,11 +503,12 @@ static const struct ide_port_ops ali_port_ops = { static const struct ide_dma_ops ali_dma_ops = { .dma_host_set = ide_dma_host_set, - .dma_setup = ali15x3_dma_setup, + .dma_setup = ide_dma_setup, .dma_start = ide_dma_start, .dma_end = ide_dma_end, .dma_test_irq = ide_dma_test_irq, .dma_lost_irq = ide_dma_lost_irq, + .dma_check = ali_dma_check, .dma_timer_expiry = ide_dma_sff_timer_expiry, .dma_sff_read_status = ide_dma_sff_read_status, }; |