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Diffstat (limited to 'drivers/ide/ide-dma.c')
-rw-r--r--drivers/ide/ide-dma.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index b430898bbcd6..cf5897f5533f 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -128,7 +128,7 @@ int ide_dma_good_drive(ide_drive_t *drive)
* operate in a portable fashion.
*/
-int ide_build_sglist(ide_drive_t *drive, struct ide_cmd *cmd)
+static int ide_build_sglist(ide_drive_t *drive, struct ide_cmd *cmd)
{
ide_hwif_t *hwif = drive->hwif;
struct scatterlist *sg = hwif->sg_table;
@@ -563,3 +563,12 @@ int ide_allocate_dma_engine(ide_hwif_t *hwif)
return 0;
}
EXPORT_SYMBOL_GPL(ide_allocate_dma_engine);
+
+int ide_dma_prepare(ide_drive_t *drive, struct ide_cmd *cmd)
+{
+ if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 ||
+ ide_build_sglist(drive, cmd) == 0 ||
+ drive->hwif->dma_ops->dma_setup(drive, cmd))
+ return 1;
+ return 0;
+}