Commit 4e7c6816 authored May 31, 2005 by Jens Axboe Committed by Linus Torvalds May 31, 2005

[PATCH] Relax idecd dma alignment check



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>

parent 05fda3b1

drivers/ide/ide-cd.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}