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[PATCH] Relax idecd dma alignment check

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Only the address needs alignment of mask bits, length should work with
a relaxed alignment check.

Signed-off-by: Jens Axboe <axboe@suse.de>

[ This is take 2: make the length check be for 16-byte alignment, not
  just word alignment.  That should hopefully keep everybody happy,
  while still allowing CD writing with DMA ]

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jens Axboe 2005-05-31 17:47:36 +02:00 committed by Linus Torvalds
parent 05fda3b1d8
commit 4e7c6816d6
1 changed files with 1 additions and 1 deletions
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2
drivers/ide/ide-cd.c
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@ -1936,7 +1936,7 @@ static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
* NOTE! The "len" and "addr" checks should possibly have
* separate masks.
*/
if ((rq->data_len & mask) || (addr & mask))
if ((rq->data_len & 15) || (addr & mask))
info->dma = 0;
}