[PATCH 2/3] scsi: core: Retry after a delay if the device is becoming ready

From: Bart Van Assche <bvanassche@acm.org>
To: "Martin K . Petersen" <martin.petersen@oracle.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>,
	linux-scsi@vger.kernel.org, Bart Van Assche <bvanassche@acm.org>,
	Ming Lei <ming.lei@redhat.com>, Hannes Reinecke <hare@suse.de>,
	John Garry <john.garry@huawei.com>
Subject: [PATCH 2/3] scsi: core: Retry after a delay if the device is becoming ready
Date: Tue, 28 Jun 2022 15:21:30 -0700	[thread overview]
Message-ID: <20220628222131.14780-3-bvanassche@acm.org> (raw)
In-Reply-To: <20220628222131.14780-1-bvanassche@acm.org>

If a logical unit reports that it is becoming ready, retry the command
after a delay instead of retrying immediately.

Cc: Ming Lei <ming.lei@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: John Garry <john.garry@huawei.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/scsi_error.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 49ef864df581..fb7e363c4c00 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -625,10 +625,10 @@ enum scsi_disposition scsi_check_sense(struct scsi_cmnd *scmd)
 			return NEEDS_RETRY;
 		/*
 		 * if the device is in the process of becoming ready, we
-		 * should retry.
+		 * should retry after a delay.
 		 */
 		if ((sshdr.asc == 0x04) && (sshdr.ascq == 0x01))
-			return NEEDS_RETRY;
+			return ADD_TO_MLQUEUE;
 		/*
 		 * if the device is not started, we need to wake
 		 * the error handler to start the motor
