Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "Updates to the usual drivers (target, ufs, smartpqi, lpfc).

  There are some core changes, mostly around reworking some of our user
  context assumptions in device put and moving some code around.

  The remaining updates are bug fixes and minor changes"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (138 commits)
  scsi: sg: Fix get_user() in call sg_scsi_ioctl()
  scsi: megaraid_sas: Fix some spelling mistakes in comment
  scsi: core: Use SCSI_SCAN_INITIAL in do_scsi_scan_host()
  scsi: core: Use SCSI_SCAN_RESCAN in __scsi_add_device()
  scsi: ufs: ufs-mediatek: Remove unnecessary return code
  scsi: ufs: core: Fix the polling implementation
  scsi: libsas: Do not export sas_ata_wait_after_reset()
  scsi: hisi_sas: Fix SATA devices missing issue during I_T nexus reset
  scsi: libsas: Add smp_ata_check_ready_type()
  scsi: Revert "scsi: hisi_sas: Don't send bcast events from HW during nexus HA reset"
  scsi: Revert "scsi: hisi_sas: Drain bcast events in hisi_sas_rescan_topology()"
  scsi: ufs: ufs-mediatek: Modify the return value
  scsi: ufs: ufs-mediatek: Remove unneeded code
  scsi: device_handler: alua: Call scsi_device_put() from non-atomic context
  scsi: device_handler: alua: Revert "Move a scsi_device_put() call out of alua_check_vpd()"
  scsi: snic: Fix possible UAF in snic_tgt_create()
  scsi: qla2xxx: Initialize vha->unknown_atio_[list, work] for NPIV hosts
  scsi: qla2xxx: Remove duplicate of vha->iocb_work initialization
  scsi: fcoe: Fix transport not deattached when fcoe_if_init() fails
  scsi: sd: Use 16-byte SYNCHRONIZE CACHE on ZBC devices
  ...

1 files changed, 20 insertions, 22 deletions

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index ac5ff0783b4f..a7960ad2d386 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -328,7 +328,6 @@ void scsi_eh_scmd_add(struct scsi_cmnd *scmd)
 enum blk_eh_timer_return scsi_timeout(struct request *req)
 {
 	struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(req);
-	enum blk_eh_timer_return rtn = BLK_EH_DONE;
 	struct Scsi_Host *host = scmd->device->host;
 
 	trace_scsi_dispatch_cmd_timeout(scmd);
@@ -338,31 +337,30 @@ enum blk_eh_timer_return scsi_timeout(struct request *req)
 	if (host->eh_deadline != -1 && !host->last_reset)
 		host->last_reset = jiffies;
 
-	if (host->hostt->eh_timed_out)
-		rtn = host->hostt->eh_timed_out(scmd);
-
-	if (rtn == BLK_EH_DONE) {
-		/*
-		 * Set the command to complete first in order to prevent a real
-		 * completion from releasing the command while error handling
-		 * is using it. If the command was already completed, then the
-		 * lower level driver beat the timeout handler, and it is safe
-		 * to return without escalating error recovery.
-		 *
-		 * If timeout handling lost the race to a real completion, the
-		 * block layer may ignore that due to a fake timeout injection,
-		 * so return RESET_TIMER to allow error handling another shot
-		 * at this command.
-		 */
-		if (test_and_set_bit(SCMD_STATE_COMPLETE, &scmd->state))
+	if (host->hostt->eh_timed_out) {
+		switch (host->hostt->eh_timed_out(scmd)) {
+		case SCSI_EH_DONE:
+			return BLK_EH_DONE;
+		case SCSI_EH_RESET_TIMER:
 			return BLK_EH_RESET_TIMER;
-		if (scsi_abort_command(scmd) != SUCCESS) {
-			set_host_byte(scmd, DID_TIME_OUT);
-			scsi_eh_scmd_add(scmd);
+		case SCSI_EH_NOT_HANDLED:
+			break;
 		}
 	}
 
-	return rtn;
+	/*
+	 * If scsi_done() has already set SCMD_STATE_COMPLETE, do not modify
+	 * *scmd.
+	 */
+	if (test_and_set_bit(SCMD_STATE_COMPLETE, &scmd->state))
+		return BLK_EH_DONE;
+	atomic_inc(&scmd->device->iodone_cnt);
+	if (scsi_abort_command(scmd) != SUCCESS) {
+		set_host_byte(scmd, DID_TIME_OUT);
+		scsi_eh_scmd_add(scmd);
+	}
+
+	return BLK_EH_DONE;
 }
 
 /**