From: Jens Axboe <axboe@suse.de>
Date: Wed, 25 May 2005 15:00:15 +0000 (+0200)
Subject: [PATCH] relax ide-cd dma restrictions
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=384f1fcd2db8bc5a15f20f10793d8e1c82acd6c5;p=openwrt%2Fstaging%2Fblogic.git

[PATCH] relax ide-cd dma restrictions

This has been sitting for a while, and is causing lots of grief for
people burning CDs.  It relaxes the dma restriction for ide-cd,
requiring only the length to be 32-byte aligned, address should be fine
at normal double word alignment.

Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 33a020faeabd..4f7ce7056228 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1933,7 +1933,7 @@ static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
 		/*
 		 * check if dma is safe
 		 */
-		if ((rq->data_len & mask) || (addr & mask))
+		if ((rq->data_len & 3) || (addr & mask))
 			info->dma = 0;
 	}