From 5d9e4ea55ae19f9083b9c2c97cc912b823ee7ab4 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 27 May 2005 07:36:17 -0700 Subject: [PATCH] ide-cd: revert DMA mask test change The change to require the DMA length to be only word-aligned was not safe. --- drivers/ide/ide-cd.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index f0bd242e030f..78e3e7b24d7d 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -1932,8 +1932,11 @@ static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) /* * check if dma is safe + * + * NOTE! The "len" and "addr" checks should possibly have + * separate masks. */ - if ((rq->data_len & 3) || (addr & mask)) + if ((rq->data_len & mask) || (addr & mask)) info->dma = 0; } -- GitLab