Commit 8884efab authored by Brian King's avatar Brian King Committed by James Bottomley
Browse files

[SCSI] scsi: scsi command retries off by one fix

Fix up an off by one error in calculating retries for scsi
commands. This bug was discovered when an SG_IO request
was sent to scsi core with retries = 0, causing the overall
timeout check to go off in scsi_softirq_done.
Signed-off-by: default avatarBrian King <>
Signed-off-by: default avatarJames Bottomley <>
parent 147aab6a
......@@ -1308,7 +1308,7 @@ int scsi_decide_disposition(struct scsi_cmnd *scmd)
* the request was not marked fast fail. Note that above,
* even if the request is marked fast fail, we still requeue
* for queue congestion conditions (QUEUE_FULL or BUSY) */
if ((++scmd->retries) < scmd->allowed
if ((++scmd->retries) <= scmd->allowed
&& !blk_noretry_request(scmd->request)) {
} else {
......@@ -1433,7 +1433,7 @@ static void scsi_eh_flush_done_q(struct list_head *done_q)
if (scsi_device_online(scmd->device) &&
!blk_noretry_request(scmd->request) &&
(++scmd->retries < scmd->allowed)) {
(++scmd->retries <= scmd->allowed)) {
SCSI_LOG_ERROR_RECOVERY(3, printk("%s: flush"
" retry cmd: %p\n",
......@@ -1498,7 +1498,7 @@ static void scsi_kill_request(struct request *req, request_queue_t *q)
static void scsi_softirq_done(struct request *rq)
struct scsi_cmnd *cmd = rq->completion_data;
unsigned long wait_for = cmd->allowed * cmd->timeout_per_command;
unsigned long wait_for = (cmd->allowed + 1) * cmd->timeout_per_command;
int disposition;
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