[patch 04/18] SCSI: add missing cdb clearing in scsi_execute()

From: Greg KH
Date: Tue Feb 20 2007 - 20:52:36 EST

-stable review patch. If anyone has any objections, please let us know.

From: Tejun Heo <htejun@xxxxxxxxx>

Clear-garbage-after-CDB patch missed scsi_execute() and it causes some
ODDs (HL-DT-ST DVD-RAM GSA-H30N) choke during SCSI scan. Note that
this patch is only for -stable. There is another more reliable fix
for this problem proposed for devel tree.


Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
Cc: Jens Axboe <jens.axboe@xxxxxxxxxx>
Cc: Douglas Gilbert <dougg@xxxxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

drivers/scsi/scsi_lib.c | 1 +
1 file changed, 1 insertion(+)

--- linux-
+++ linux-
@@ -191,6 +191,7 @@ int scsi_execute(struct scsi_device *sde
goto out;

req->cmd_len = COMMAND_SIZE(cmd[0]);
+ memset(req->cmd, 0, BLK_MAX_CDB); /* ATAPI hates garbage after CDB */
memcpy(req->cmd, cmd, req->cmd_len);
req->sense = sense;
req->sense_len = 0;

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