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[PATCH 4.4 37/91] scsi: aacraid: Reorder Adapter status check

From Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Newsgroups linux.kernel
Subject [PATCH 4.4 37/91] scsi: aacraid: Reorder Adapter status check
Date 2017-03-10 15:40 +0100
Message-ID <tjtS5-5k0-79@gated-at.bofh.it> (permalink)
References <tjoSl-1MV-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>

commit c421530bf848604e97d0785a03b3fe2c62775083 upstream.

The driver currently checks the SELF_TEST_FAILED first and then
KERNEL_PANIC next. Under error conditions(boot code failure) both
SELF_TEST_FAILED and KERNEL_PANIC can be set at the same time.

The driver has the capability to reset the controller on an KERNEL_PANIC,
but not on SELF_TEST_FAILED.

Fixed by first checking KERNEL_PANIC and then the others.

Fixes: e8b12f0fb835223752 ([SCSI] aacraid: Add new code for PMC-Sierra's SRC base controller family)
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/scsi/aacraid/src.c |   21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -413,16 +413,23 @@ static int aac_src_check_health(struct a
 	u32 status = src_readl(dev, MUnit.OMR);
 
 	/*
+	 *	Check to see if the board panic'd.
+	 */
+	if (unlikely(status & KERNEL_PANIC))
+		goto err_blink;
+
+	/*
 	 *	Check to see if the board failed any self tests.
 	 */
 	if (unlikely(status & SELF_TEST_FAILED))
-		return -1;
+		goto err_out;
 
 	/*
-	 *	Check to see if the board panic'd.
+	 *	Check to see if the board failed any self tests.
 	 */
-	if (unlikely(status & KERNEL_PANIC))
-		return (status >> 16) & 0xFF;
+	if (unlikely(status & MONITOR_PANIC))
+		goto err_out;
+
 	/*
 	 *	Wait for the adapter to be up and running.
 	 */
@@ -432,6 +439,12 @@ static int aac_src_check_health(struct a
 	 *	Everything is OK
 	 */
 	return 0;
+
+err_out:
+	return -1;
+
+err_blink:
+	return (status > 16) & 0xFF;
 }
 
 /**

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Thread

[PATCH 4.4 00/91] 4.4.53-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:40 +0100
  [PATCH 4.4 39/91] sd: get disk reference in sd_check_events() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:40 +0100
  [PATCH 4.4 09/91] MIPS: Calculate microMIPS ra properly when unwinding the stack Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:40 +0100
  [PATCH 4.4 45/91] ext4: do not polute the extents cache while shifting extents Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:40 +0100
  [PATCH 4.4 32/91] dm cache: fix corruption seen when using cache > 2TB Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:40 +0100
  [PATCH 4.4 37/91] scsi: aacraid: Reorder Adapter status check Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:40 +0100
  [PATCH 4.4 22/91] ALSA: hda - Add subwoofer support for Dell Inspiron 17 7000 Gaming Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:40 +0100
  [PATCH 4.4 19/91] ALSA: timer: Reject user params with too small ticks Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:50 +0100
  [PATCH 4.4 01/91] MIPS: Fix special case in 64 bit IP checksumming. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:50 +0100
  [PATCH 4.4 15/91] ARM: dts: at91: Enable DMA on sama5d4_xplained console Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:50 +0100
  [PATCH 4.4 33/91] dm stats: fix a leaked s->histogram_boundaries array Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:50 +0100
  [PATCH 4.4 13/91] [media] media: fix dm1105.c build error Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-10 15:50 +0100
  Re: [PATCH 4.4 00/91] 4.4.53-stable review Guenter Roeck <linux@roeck-us.net> - 2017-03-10 19:40 +0100
  Re: [PATCH 4.4 00/91] 4.4.53-stable review Shuah Khan <shuahkh@osg.samsung.com> - 2017-03-10 20:20 +0100
  Re: [PATCH 4.4 00/91] 4.4.53-stable review Thomas Petazzoni <thomas.petazzoni@free-electrons.com> - 2017-03-13 10:00 +0100

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