diff options
| author | Alexander Kappner <agk@godking.net> | 2018-05-18 21:50:15 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-06-16 09:45:15 +0200 |
| commit | c839680e8cbfb887ab7588aa1b4481aa1b85415b (patch) | |
| tree | 7a7af3f4a9974b06490ff5dae08ed5b2ce87e3f6 | |
| parent | f31eb7298ba4fc6fb39119330367a44905da8c57 (diff) | |
usb-storage: Add support for FL_ALWAYS_SYNC flag in the UAS driver
commit 8c4e97ddfe73a0958bb0abf7e6a3bc4cc3e04936 upstream.
The ALWAYS_SYNC flag is currently honored by the usb-storage driver but not UAS
and is required to work around devices that become unstable upon being
queried for cache. This code is taken straight from:
drivers/usb/storage/scsiglue.c:284
Signed-off-by: Alexander Kappner <agk@godking.net>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/storage/uas.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 25a281f876b5..33a6d624c843 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -836,6 +836,12 @@ static int uas_slave_configure(struct scsi_device *sdev) if (devinfo->flags & US_FL_BROKEN_FUA) sdev->broken_fua = 1; + /* UAS also needs to support FL_ALWAYS_SYNC */ + if (devinfo->flags & US_FL_ALWAYS_SYNC) { + sdev->skip_ms_page_3f = 1; + sdev->skip_ms_page_8 = 1; + sdev->wce_default_on = 1; + } scsi_change_queue_depth(sdev, devinfo->qdepth - 2); return 0; } |