From: "Matthew R. Ochs" <mrochs@linux.vnet.ibm.com>
To: Brian King <brking@linux.vnet.ibm.com>
Cc: linux-scsi@vger.kernel.org,
James Bottomley <James.Bottomley@HansenPartnership.com>,
"Nicholas A. Bellinger" <nab@linux-iscsi.org>,
Ian Munsie <imunsie@au1.ibm.com>,
Daniel Axtens <dja@ozlabs.au.ibm.com>,
Andrew Donnellan <andrew.donnellan@au1.ibm.com>,
Tomas Henzl <thenzl@redhat.com>,
David Laight <David.Laight@ACULAB.COM>,
Michael Neuling <mikey@neuling.org>,
linuxppc-dev@lists.ozlabs.org,
"Manoj N. Kumar" <manoj@linux.vnet.ibm.com>
Subject: Re: [PATCH v4 32/32] cxlflash: Fix to avoid potential deadlock on EEH
Date: Tue, 29 Sep 2015 14:40:09 -0500 [thread overview]
Message-ID: <D7E92099-CCEE-4D1B-AF24-1397C8DCBDAD@linux.vnet.ibm.com> (raw)
In-Reply-To: <5609D03D.6010709@linux.vnet.ibm.com>
> On Sep 28, 2015, at 6:41 PM, Brian King <brking@linux.vnet.ibm.com> =
wrote:
> On 09/25/2015 06:19 PM, Matthew R. Ochs wrote:
>> static int write_same16(struct scsi_device *sdev,
>> @@ -433,9 +451,20 @@ static int write_same16(struct scsi_device =
*sdev,
>> put_unaligned_be32(ws_limit < left ? ws_limit : left,
>> &scsi_cmd[10]);
>>=20
>> + /* Drop the ioctl read semahpore across lengthy call */
>> + up_read(&cfg->ioctl_rwsem);
>> result =3D scsi_execute(sdev, scsi_cmd, DMA_TO_DEVICE, =
cmd_buf,
>> CMD_BUFSIZE, sense_buf, to, =
CMD_RETRIES,
>> 0, NULL);
>> + down_read(&cfg->ioctl_rwsem);
>> + rc =3D check_state(cfg);
>> + if (rc) {
>> + dev_err(dev, "%s: Failed state! =
result=3D0x08%X\n",
>> + __func__, result);
>> + rc =3D -ENODEV;
>=20
> Since check_state only returns 0 or -ENODEV, this is a bit redundant, =
but not worth redoing the
> patch in my mind.
Agreed. This occurred to me the other day after submitting this patch =
when I was
reviewing the state locking code. Will look at revising in a future =
patch.
Thanks again for reviewing.
next prev parent reply other threads:[~2015-09-29 19:40 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-25 23:09 [PATCH v4 00/32] cxlflash: Miscellaneous bug fixes and corrections Matthew R. Ochs
2015-09-25 23:12 ` [PATCH v4 01/32] cxlflash: Fix to avoid invalid port_sel value Matthew R. Ochs
2015-09-25 23:12 ` [PATCH v4 02/32] cxlflash: Replace magic numbers with literals Matthew R. Ochs
2015-09-29 5:40 ` Andrew Donnellan
2015-09-25 23:12 ` [PATCH v4 03/32] cxlflash: Fix read capacity timeout Matthew R. Ochs
2015-09-25 23:13 ` [PATCH v4 04/32] cxlflash: Fix potential oops following LUN removal Matthew R. Ochs
2015-09-25 23:13 ` [PATCH v4 05/32] cxlflash: Fix data corruption when vLUN used over multiple cards Matthew R. Ochs
2015-09-25 23:14 ` [PATCH v4 06/32] cxlflash: Fix to avoid sizeof(bool) Matthew R. Ochs
2015-09-28 22:35 ` Daniel Axtens
2015-09-25 23:14 ` [PATCH v4 07/32] cxlflash: Fix context encode mask width Matthew R. Ochs
2015-09-28 22:39 ` Daniel Axtens
2015-09-25 23:14 ` [PATCH v4 08/32] cxlflash: Fix to avoid CXL services during EEH Matthew R. Ochs
2015-09-28 22:07 ` Brian King
2015-09-28 23:05 ` Daniel Axtens
2015-09-29 19:28 ` Matthew R. Ochs
2015-09-25 23:14 ` [PATCH v4 09/32] cxlflash: Correct naming of limbo state and waitq Matthew R. Ochs
2015-09-28 23:09 ` Daniel Axtens
2015-09-25 23:14 ` [PATCH v4 10/32] cxlflash: Make functions static Matthew R. Ochs
2015-09-25 23:14 ` [PATCH v4 11/32] cxlflash: Refine host/device attributes Matthew R. Ochs
2015-09-29 4:29 ` Andrew Donnellan
2015-09-25 23:15 ` [PATCH v4 12/32] cxlflash: Fix to avoid spamming the kernel log Matthew R. Ochs
2015-09-29 5:05 ` Andrew Donnellan
2015-09-29 20:37 ` Matthew R. Ochs
2015-09-25 23:16 ` [PATCH v4 13/32] cxlflash: Fix to avoid stall while waiting on TMF Matthew R. Ochs
2015-09-25 23:16 ` [PATCH v4 14/32] cxlflash: Fix location of setting resid Matthew R. Ochs
2015-09-25 23:16 ` [PATCH v4 15/32] cxlflash: Fix host link up event handling Matthew R. Ochs
2015-09-25 23:16 ` [PATCH v4 16/32] cxlflash: Fix async interrupt bypass logic Matthew R. Ochs
2015-09-25 23:16 ` [PATCH v4 17/32] cxlflash: Remove dual port online dependency Matthew R. Ochs
2015-09-28 23:37 ` Daniel Axtens
2015-09-29 19:38 ` Matthew R. Ochs
2015-09-30 23:50 ` Daniel Axtens
2015-10-01 15:00 ` Matthew R. Ochs
2015-09-25 23:17 ` [PATCH v4 18/32] cxlflash: Fix AFU version access/storage and add check Matthew R. Ochs
2015-09-25 23:17 ` [PATCH v4 19/32] cxlflash: Correct usage of scsi_host_put() Matthew R. Ochs
2015-09-25 23:17 ` [PATCH v4 20/32] cxlflash: Fix to prevent workq from accessing freed memory Matthew R. Ochs
2015-09-25 23:17 ` [PATCH v4 21/32] cxlflash: Correct behavior in device reset handler following EEH Matthew R. Ochs
2015-09-25 23:17 ` [PATCH v4 22/32] cxlflash: Remove unnecessary scsi_block_requests Matthew R. Ochs
2015-09-25 23:18 ` [PATCH v4 23/32] cxlflash: Fix function prolog parameters and return codes Matthew R. Ochs
2015-09-29 4:36 ` Andrew Donnellan
2015-09-29 20:31 ` Matthew R. Ochs
2015-09-25 23:18 ` [PATCH v4 24/32] cxlflash: Fix MMIO and endianness errors Matthew R. Ochs
2015-09-29 1:52 ` Andrew Donnellan
2015-09-25 23:18 ` [PATCH v4 25/32] cxlflash: Fix to prevent EEH recovery failure Matthew R. Ochs
2015-09-29 1:25 ` Daniel Axtens
2015-09-29 20:11 ` Matthew R. Ochs
2015-09-30 23:53 ` Daniel Axtens
2015-09-25 23:18 ` [PATCH v4 26/32] cxlflash: Correct spelling, grammar, and alignment mistakes Matthew R. Ochs
2015-09-29 1:18 ` Andrew Donnellan
2015-09-25 23:19 ` [PATCH v4 27/32] cxlflash: Fix to prevent stale AFU RRQ Matthew R. Ochs
2015-09-29 1:36 ` Daniel Axtens
2015-09-29 20:22 ` Matthew R. Ochs
2015-09-30 23:51 ` Daniel Axtens
2015-09-25 23:19 ` [PATCH v4 28/32] MAINTAINERS: Add cxlflash driver Matthew R. Ochs
2015-09-25 23:19 ` [PATCH v4 29/32] cxlflash: Fix to double the delay each time Matthew R. Ochs
2015-09-29 1:19 ` Andrew Donnellan
2015-09-29 1:40 ` Daniel Axtens
2015-09-29 20:28 ` Matthew R. Ochs
2015-09-30 0:08 ` Daniel Axtens
2015-09-25 23:19 ` [PATCH v4 30/32] cxlflash: Fix to avoid corrupting adapter fops Matthew R. Ochs
2015-09-28 22:13 ` Brian King
2015-09-29 0:54 ` Andrew Donnellan
2015-09-30 0:18 ` Daniel Axtens
2015-09-25 23:19 ` [PATCH v4 31/32] cxlflash: Correct trace string Matthew R. Ochs
2015-09-29 1:20 ` Andrew Donnellan
2015-09-25 23:19 ` [PATCH v4 32/32] cxlflash: Fix to avoid potential deadlock on EEH Matthew R. Ochs
2015-09-28 23:41 ` Brian King
2015-09-29 19:40 ` Matthew R. Ochs [this message]
2015-09-30 0:33 ` Daniel Axtens
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