ide-cd: revert DMA mask test change

The change to require the DMA length to be only word-aligned was not
safe.

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index f0bd242e030f2e0f45b1bdf45cb99ae0c3e33b79..78e3e7b24d7d62fb12bb2736f001d95894b1d42b 100644 (file)
--- 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;
        }