linux-kernel - [34-longterm 092/247] mptfusion: Fix Incorrect return value in mptscsih_dev

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Date:	Thu, 23 Jun 2011 13:32:40 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	stable@...nel.org, linux-kernel@...r.kernel.org
Cc:	stable-review@...nel.org, "Kashyap, Desai" <kashyap.desai@....com>,
	James Bottomley <James.Bottomley@...e.de>,
	Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: [34-longterm 092/247] mptfusion: Fix Incorrect return value in mptscsih_dev_reset

From: Kashyap, Desai <kashyap.desai@....com>

                   -------------------
    This is a commit scheduled for the next v2.6.34 longterm release.
    If you see a problem with using this for longterm, please comment.
                   -------------------

commit bcfe42e98047f1935c5571c8ea77beb2d43ec19d upstream.

There's a branch at the end of this function that
is supposed to normalize the return value with what
the mid-layer expects. In this one case, we get it wrong.

Also increase the verbosity of the INFO level printk
at the end of mptscsih_abort to include the actual return value
and the scmd->serial_number. The reason being success
or failure is actually determined by the state of
the internal tag list when a TMF is issued, and not the
return value of the TMF cmd. The serial_number is also
used in this decision, thus it's useful to know for debugging
purposes.

Reported-by: Peter M. Petrakis <peter.petrakis@...onical.com>
Signed-off-by: Kashyap Desai <kashyap.desai@....com>
Signed-off-by: James Bottomley <James.Bottomley@...e.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 drivers/message/fusion/mptscsih.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c
index c13726a..d2b0b11 100644
--- a/drivers/message/fusion/mptscsih.c
+++ b/drivers/message/fusion/mptscsih.c
@@ -1841,8 +1841,9 @@ mptscsih_abort(struct scsi_cmnd * SCpnt)
 	}
 
  out:
-	printk(MYIOC_s_INFO_FMT "task abort: %s (sc=%p)\n",
-	    ioc->name, ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), SCpnt);
+	printk(MYIOC_s_INFO_FMT "task abort: %s (rv=%04x) (sc=%p) (sn=%ld)\n",
+	    ioc->name, ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), retval,
+	    SCpnt, SCpnt->serial_number);
 
 	return retval;
 }
@@ -1879,7 +1880,7 @@ mptscsih_dev_reset(struct scsi_cmnd * SCpnt)
 
 	vdevice = SCpnt->device->hostdata;
 	if (!vdevice || !vdevice->vtarget) {
-		retval = SUCCESS;
+		retval = 0;
 		goto out;
 	}
 
-- 
1.7.4.4

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