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 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
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-4.9 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 Sun Mar 18 16:55:33 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 @@ -596,17 +596,12 @@ 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-4.9/scsi-core-scsi_get_device_flags_keyed-always-return-device-flags.patch