* Patch "scsi: core: scsi_get_device_flags_keyed(): Always return device flags" has been added to the 4.4-stable tree
@ 2018-03-19 9:09 gregkh
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From: gregkh @ 2018-03-19 9:09 UTC (permalink / raw)
To: bart.vanassche, alexander.levin, gregkh, hare, hch, jthumshirn,
martin.petersen
Cc: stable, stable-commits
This is a note to let you know that I've just added the patch titled
scsi: core: scsi_get_device_flags_keyed(): Always return device flags
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-core-scsi_get_device_flags_keyed-always-return-device-flags.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From foo@baz Mon Mar 19 09:58:12 CET 2018
From: Bart Van Assche <bart.vanassche@wdc.com>
Date: Mon, 4 Dec 2017 10:36:31 -0800
Subject: scsi: core: scsi_get_device_flags_keyed(): Always return device flags
From: Bart Van Assche <bart.vanassche@wdc.com>
[ Upstream commit a44c9d36509c83cf64f33b93f6ab2e63822c01eb ]
Since scsi_get_device_flags_keyed() callers do not check whether or not
the returned value is an error code, change that function such that it
returns a flags value even if the 'key' argument is invalid. Note:
since commit 28a0bc4120d3 ("scsi: sd: Implement blacklist option for
WRITE SAME w/ UNMAP") bit 31 is a valid device information flag so
checking whether bit 31 is set in the return value is not sufficient to
tell the difference between an error code and a flags value.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/scsi/scsi_devinfo.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -589,17 +589,12 @@ int scsi_get_device_flags_keyed(struct s
int key)
{
struct scsi_dev_info_list *devinfo;
- int err;
devinfo = scsi_dev_info_list_find(vendor, model, key);
if (!IS_ERR(devinfo))
return devinfo->flags;
- err = PTR_ERR(devinfo);
- if (err != -ENOENT)
- return err;
-
- /* nothing found, return nothing */
+ /* key or device not found: return nothing */
if (key != SCSI_DEVINFO_GLOBAL)
return 0;
Patches currently in stable-queue which might be from bart.vanassche@wdc.com are
queue-4.4/scsi-core-scsi_get_device_flags_keyed-always-return-device-flags.patch
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2018-03-19 9:09 Patch "scsi: core: scsi_get_device_flags_keyed(): Always return device flags" has been added to the 4.4-stable tree gregkh
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