From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Subject: [PATCH] ide-cd: use common completion path for DMA requests in cdrom_newpc_intr()
Use the following facts:
- rq->nr_sectors should now be always equal to (non-zero)
rq->hard_nr_sectors for fs requests
- REQ_TYPE_ATA_PC requests have never bio attached to them
- rq->hard_nr_sectors == 0 for REQ_TYPE_ATA_PC requests
- DMA is used only for fs, pc and REQ_TYPE_ATA_PC requests
- 'uptodate' is ignored for pc requests ('rc == 0' case)
and use the common completion path also for DMA requests.
There should be no functional changes caused by this patch
Cc: Borislav Petkov <petkovbb@xxxxxxxxx>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ide/ide-cd.c | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)
Index: b/drivers/ide/ide-cd.c
===================================================================
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -660,16 +660,7 @@ static ide_startstop_t cdrom_newpc_intr(
if (dma) {
if (dma_error)
return ide_error(drive, "dma error", stat);
- if (blk_fs_request(rq)) {
- ide_complete_rq(drive, 0, rq->nr_sectors
- ? (rq->nr_sectors << 9) : ide_rq_bytes(rq));
- return ide_stopped;
- } else if (rq->cmd_type == REQ_TYPE_ATA_PC && !rq->bio) {
- ide_complete_rq(drive, 0, 512);
- return ide_stopped;
- }
- if (blk_pc_request(rq) == 0 && uptodate == 0)
- rq->cmd_flags |= REQ_FAILED;
+ uptodate = 1;
goto out_end;
}
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