scsi: sr: Initialize ->cmd_len

Ensure the command length is properly set.  Previously the command code
tried to find this out using the command opcode.

Link: https://lore.kernel.org/r/20201008200611.1818099-2-hch@lst.de
Fixes: 2ceda20f0a99 ("scsi: core: Move command size detection out of the fast path")
Reported-by: Qian Cai <cai@redhat.com>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index b74dfd8dc1165e3422630cb3e1c586619c8c4663..c20b4391837898f7bc060d6dd47991addf15b2c0 100644 (file)
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -503,6 +503,7 @@ static blk_status_t sr_init_command(struct scsi_cmnd *SCpnt)
        SCpnt->transfersize = cd->device->sector_size;
        SCpnt->underflow = this_count << 9;
        SCpnt->allowed = MAX_RETRIES;
+       SCpnt->cmd_len = 10;
 
        /*
         * This indicates that the command is ready from our end to be queued.