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From: Sagar Biradar <Sagar.Biradar@microchip.com>
To: "Martin K. Petersen" <martin.petersen@oracle.com>,
	James Bottomley <jejb@linux.vnet.ibm.com>
Cc: Sagar Biradar <Sagar.Biradar@microchip.com>,
	linux-scsi <linux-scsi@vger.kernel.org>, <aacraid@microsemi.com>,
	Scott Benesh <scott.benesh@microsemi.com>,
	Brian King <brking@linux.vnet.ibm.com>, <stable@vger.kernel.org>,
	Balsundar P <balsundar.p@microsemi.com>
Subject: [PATCH] aacraid: Disabling TM path and only processing IOP reset
Date: Wed, 12 Feb 2020 16:29:31 -0800	[thread overview]
Message-ID: <1581553771-25796-1-git-send-email-Sagar.Biradar@microchip.com> (raw)

Fixes the occasional adapter panic when sg_reset is 
issued with -d, -t, -b and -H flags.
Removal of command type HBA_IU_TYPE_SCSI_TM_REQ in aac_hba_send since 
iu_type, request_id and fib_flags are not populated.
Device and target reset handlers made to send TMF commands only when 
reset_state is 0.

Signed-off-by: Balsundar P <balsundar.p@microsemi.com>
Signed-off-by: Sagar Biradar <Sagar.Biradar@microchip.com>
Reviewed-by: Sagar Biradar <Sagar.Biradar@microchip.com>
---
 drivers/scsi/aacraid/commsup.c |  2 +-
 drivers/scsi/aacraid/linit.c   | 34 +++++++++++++++++++++++++---------
 2 files changed, 26 insertions(+), 10 deletions(-)

diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 5a8a999..5118bee 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -729,7 +729,7 @@ int aac_hba_send(u8 command, struct fib *fibptr, fib_callback callback,
 		hbacmd->request_id =
 			cpu_to_le32((((u32)(fibptr - dev->fibs)) << 2) + 1);
 		fibptr->flags |= FIB_CONTEXT_FLAG_SCSI_CMD;
-	} else if (command != HBA_IU_TYPE_SCSI_TM_REQ)
+	} else
 		return -EINVAL;
 
 
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index ee6bc2f..9130e03 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -731,7 +731,11 @@ static int aac_eh_abort(struct scsi_cmnd* cmd)
 		status = aac_hba_send(HBA_IU_TYPE_SCSI_TM_REQ, fib,
 				  (fib_callback) aac_hba_callback,
 				  (void *) cmd);
-
+		if (status != -EINPROGRESS) {
+			aac_fib_complete(fib);
+			aac_fib_free(fib);
+			return ret;
+		}
 		/* Wait up to 15 secs for completion */
 		for (count = 0; count < 15; ++count) {
 			if (cmd->SCp.sent_command) {
@@ -910,11 +914,11 @@ static int aac_eh_dev_reset(struct scsi_cmnd *cmd)
 
 	info = &aac->hba_map[bus][cid];
 
-	if (info->devtype != AAC_DEVTYPE_NATIVE_RAW &&
-	    info->reset_state > 0)
+	if (!(info->devtype == AAC_DEVTYPE_NATIVE_RAW &&
+	 !(info->reset_state > 0)))
 		return FAILED;
 
-	pr_err("%s: Host adapter reset request. SCSI hang ?\n",
+	pr_err("%s: Host device reset request. SCSI hang ?\n",
 	       AAC_DRIVERNAME);
 
 	fib = aac_fib_alloc(aac);
@@ -929,7 +933,12 @@ static int aac_eh_dev_reset(struct scsi_cmnd *cmd)
 	status = aac_hba_send(command, fib,
 			      (fib_callback) aac_tmf_callback,
 			      (void *) info);
-
+	if (status != -EINPROGRESS) {
+		info->reset_state = 0;
+		aac_fib_complete(fib);
+		aac_fib_free(fib);
+		return ret;
+	}
 	/* Wait up to 15 seconds for completion */
 	for (count = 0; count < 15; ++count) {
 		if (info->reset_state == 0) {
@@ -968,11 +977,11 @@ static int aac_eh_target_reset(struct scsi_cmnd *cmd)
 
 	info = &aac->hba_map[bus][cid];
 
-	if (info->devtype != AAC_DEVTYPE_NATIVE_RAW &&
-	    info->reset_state > 0)
+	if (!(info->devtype == AAC_DEVTYPE_NATIVE_RAW &&
+	 !(info->reset_state > 0)))
 		return FAILED;
 
-	pr_err("%s: Host adapter reset request. SCSI hang ?\n",
+	pr_err("%s: Host target reset request. SCSI hang ?\n",
 	       AAC_DRIVERNAME);
 
 	fib = aac_fib_alloc(aac);
@@ -989,6 +998,13 @@ static int aac_eh_target_reset(struct scsi_cmnd *cmd)
 			      (fib_callback) aac_tmf_callback,
 			      (void *) info);
 
+	if (status != -EINPROGRESS) {
+		info->reset_state = 0;
+		aac_fib_complete(fib);
+		aac_fib_free(fib);
+		return ret;
+	}
+
 	/* Wait up to 15 seconds for completion */
 	for (count = 0; count < 15; ++count) {
 		if (info->reset_state <= 0) {
@@ -1041,7 +1057,7 @@ static int aac_eh_bus_reset(struct scsi_cmnd* cmd)
 		}
 	}
 
-	pr_err("%s: Host adapter reset request. SCSI hang ?\n", AAC_DRIVERNAME);
+	pr_err("%s: Host bus reset request. SCSI hang ?\n", AAC_DRIVERNAME);
 
 	/*
 	 * Check the health of the controller
-- 
1.8.3.1


             reply	other threads:[~2020-02-13  0:40 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-13  0:29 Sagar Biradar [this message]
2020-02-29  5:26 ` [PATCH] aacraid: Disabling TM path and only processing IOP reset Martin K. Petersen

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