diff options
Diffstat (limited to 'drivers/scsi/scsi_debug.c')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 0d5a179dbd97..9081c9d22882 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -7741,6 +7741,34 @@ static int sdebug_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num) return num_entries; } +static int sdebug_timeout_cmd(struct scsi_cmnd *cmnd) +{ + struct scsi_device *sdp = cmnd->device; + struct sdebug_dev_info *devip = (struct sdebug_dev_info *)sdp->hostdata; + struct sdebug_err_inject *err; + unsigned char *cmd = cmnd->cmnd; + int ret = 0; + + if (devip == NULL) + return 0; + + rcu_read_lock(); + list_for_each_entry_rcu(err, &devip->inject_err_list, list) { + if (err->type == ERR_TMOUT_CMD && + (err->cmd == cmd[0] || err->cmd == 0xff)) { + ret = !!err->cnt; + if (err->cnt < 0) + err->cnt++; + + rcu_read_unlock(); + return ret; + } + } + rcu_read_unlock(); + + return 0; +} + static int scsi_debug_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scp) { @@ -7799,6 +7827,12 @@ static int scsi_debug_queuecommand(struct Scsi_Host *shost, if (NULL == devip) goto err_out; } + + if (sdebug_timeout_cmd(scp)) { + scmd_printk(KERN_INFO, scp, "timeout command 0x%x\n", opcode); + return 0; + } + if (unlikely(inject_now && !atomic_read(&sdeb_inject_pending))) atomic_set(&sdeb_inject_pending, 1); |