Revert "scsi: core: Use a structure member to track the SCSI command submitter"

This reverts commit f2d30198c0530b8da155697d8723e19ac72c15fe which is
commit bf23e619039d360d503b7282d030daf2277a5d47 upstream.

As reported, a lot of scsi changes were made just to resolve a 2 line
patch, so let's revert them all and then manually fix up the 2 line
fixup so that things are simpler and potential abi changes are not an
issue.

Link: https://lore.kernel.org/r/ZZ042FejzwMM5vDW@duo.ucw.cz
Reported-by: Pavel Machek <pavel@ucw.cz>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Benjamin Block <bblock@linux.ibm.com>
Cc: Bean Huo <beanhuo@micron.com>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 11 insertions, 6 deletions

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 93374173b957..89189b65e5eb 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -50,6 +50,8 @@
 
 #include <asm/unaligned.h>
 
+static void scsi_eh_done(struct scsi_cmnd *scmd);
+
 /*
  * These should *probably* be handled by the host itself.
  * Since it is allowed to sleep, it probably should.
@@ -498,8 +500,7 @@ int scsi_check_sense(struct scsi_cmnd *scmd)
 		/* handler does not care. Drop down to default handling */
 	}
 
-	if (scmd->cmnd[0] == TEST_UNIT_READY &&
-	    scmd->submitter != SUBMITTED_BY_SCSI_ERROR_HANDLER)
+	if (scmd->cmnd[0] == TEST_UNIT_READY && scmd->scsi_done != scsi_eh_done)
 		/*
 		 * nasty: for mid-layer issued TURs, we need to return the
 		 * actual sense data without any recovery attempt.  For eh
@@ -767,7 +768,7 @@ static int scsi_eh_completed_normally(struct scsi_cmnd *scmd)
  * scsi_eh_done - Completion function for error handling.
  * @scmd:	Cmd that is done.
  */
-void scsi_eh_done(struct scsi_cmnd *scmd)
+static void scsi_eh_done(struct scsi_cmnd *scmd)
 {
 	struct completion *eh_action;
 
@@ -1067,7 +1068,7 @@ retry:
 	shost->eh_action = &done;
 
 	scsi_log_send(scmd);
-	scmd->submitter = SUBMITTED_BY_SCSI_ERROR_HANDLER;
+	scmd->scsi_done = scsi_eh_done;
 
 	/*
 	 * Lock sdev->state_mutex to avoid that scsi_device_quiesce() can
@@ -1094,7 +1095,6 @@ retry:
 	if (rtn) {
 		if (timeleft > stall_for) {
 			scsi_eh_restore_cmnd(scmd, &ses);
-
 			timeleft -= stall_for;
 			msleep(jiffies_to_msecs(stall_for));
 			goto retry;
@@ -2322,6 +2322,11 @@ void scsi_report_device_reset(struct Scsi_Host *shost, int channel, int target)
 }
 EXPORT_SYMBOL(scsi_report_device_reset);
 
+static void
+scsi_reset_provider_done_command(struct scsi_cmnd *scmd)
+{
+}
+
 /**
  * scsi_ioctl_reset: explicitly reset a host/bus/target/device
  * @dev:	scsi_device to operate on
@@ -2358,7 +2363,7 @@ scsi_ioctl_reset(struct scsi_device *dev, int __user *arg)
 	scmd->request = rq;
 	scmd->cmnd = scsi_req(rq)->cmd;
 
-	scmd->submitter = SUBMITTED_BY_SCSI_RESET_IOCTL;
+	scmd->scsi_done		= scsi_reset_provider_done_command;
 	memset(&scmd->sdb, 0, sizeof(scmd->sdb));
 
 	scmd->cmd_len			= 0;