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ide-cd: fix missing residual count setting in DMA mode 

This patch fixes the missing residual count setting in DMA mode,
which was introduced during the conversion to blk-end-request.
The residual count could be used by the request submitter.
So if it isn't set correctly, some upper layers does not work.
(e.g. wodim for CD burning.)

The bug is in only DMA mode.
In PIO mode, we are setting the residual count correctly,
so no need to fix.

Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Reported-by: Andreas Schwab <schwab@suse.de>
Tested-by: Andreas Schwab <schwab@suse.de>
Tested-by: Laura Garcia <nevola@gmail.com>
Tested-by: Borislav Petkov <petkovbb@googlemail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
hifive-unleashed-5.1
Kiyoshi Ueda 2008-02-19 01:41:26 +01:00 committed by Bartlomiej Zolnierkiewicz
parent 0e7d8d4802
commit 14e04c3f6e
1 changed files with 5 additions and 1 deletions
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6
drivers/ide/ide-cd.c
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@ -1207,9 +1207,13 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
end_request:
if (blk_pc_request(rq)) {
unsigned long flags;
unsigned int dlen = rq->data_len;
if (dma)
rq->data_len = 0;
spin_lock_irqsave(&ide_lock, flags);
if (__blk_end_request(rq, 0, rq->data_len))
if (__blk_end_request(rq, 0, dlen))
BUG();
HWGROUP(drive)->rq = NULL;
spin_unlock_irqrestore(&ide_lock, flags);