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-rw-r--r--block/scsi_ioctl.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index a19338e6215d..e55a75621437 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -286,9 +286,8 @@ static int sg_io(struct file *file, request_queue_t *q,
* fill in request structure
*/
rq->cmd_len = hdr->cmd_len;
+ memset(rq->cmd, 0, BLK_MAX_CDB); /* ATAPI hates garbage after CDB */
memcpy(rq->cmd, cmd, hdr->cmd_len);
- if (sizeof(rq->cmd) != hdr->cmd_len)
- memset(rq->cmd + hdr->cmd_len, 0, sizeof(rq->cmd) - hdr->cmd_len);
memset(sense, 0, sizeof(sense));
rq->sense = sense;