xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ide: call ide_build_sglist() prior to ->dma_setup (v2)

Browse Source 
* Re-map sg table if needed in ide_build_sglist().

* Move ide_build_sglist() call from ->dma_setup to its users.

* Un-export ide_build_sglist().

v2:
* Build fix for CONFIG_BLK_DEV_IDEDMA=n (noticed by Randy Dunlap).

There should be no functional changes caused by this patch.

Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2009-03-27 12:46:37 +01:00
parent b109f526ca
commit e6830a86c2
10 changed files with 24 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/ide/ide-dma.c
View File

@@ -138,14 +138,15 @@ int ide_build_sglist(ide_drive_t *drive, struct request *rq)
hwif->sg_dma_direction = DMA_TO_DEVICE;
i = dma_map_sg(hwif->dev, sg, hwif->sg_nents, hwif->sg_dma_direction);
if (i) {
if (i == 0)
ide_map_sg(drive, rq);
else {
hwif->orig_sg_nents = hwif->sg_nents;
hwif->sg_nents = i;
}
return i;
}
EXPORT_SYMBOL_GPL(ide_build_sglist);
/**
* ide_destroy_dmatable - clean up DMA mapping