diff options
| author | Tejun Heo <htejun@gmail.com> | 2006-11-16 01:19:31 -0800 |
|---|---|---|
| committer | Chris Wright <chrisw@sous-sol.org> | 2006-12-01 16:12:35 -0800 |
| commit | 6ae616ea9dda7f6f5932dbaed31922fd27a83420 (patch) | |
| tree | add92960d8a8110576ba434807bb2e13828cf543 | |
| parent | bff5d22ea358dde8ba0341eec3e6af0ecdf6a89e (diff) | |
[PATCH] scsi: clear garbage after CDBs on SG_IO
ATAPI devices transfer fixed number of bytes for CDBs (12 or 16). Some
ATAPI devices choke when shorter CDB is used and the left bytes contain
garbage. Block SG_IO cleared left bytes but SCSI SG_IO didn't. This patch
makes SCSI SG_IO clear it and simplify CDB clearing in block SG_IO.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Mathieu Fluhr <mfluhr@nero.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Douglas Gilbert <dougg@torque.net>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Cc: <stable@kernel.org>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
| -rw-r--r-- | block/scsi_ioctl.c | 3 | ||||
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 1 |
2 files changed, 2 insertions, 2 deletions
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index ed3d3aec7e9..848ac4223e4 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; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 077c1c69121..3031078f5fe 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -408,6 +408,7 @@ int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd, goto free_req; req->cmd_len = cmd_len; + memset(req->cmd, 0, BLK_MAX_CDB); /* ATAPI hates garbage after CDB */ memcpy(req->cmd, cmd, req->cmd_len); req->sense = sioc->sense; req->sense_len = 0; |