diff options
| author | Alexander Kappner <agk@godking.net> | 2018-05-19 06:50:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-24 18:19:39 +0200 |
| commit | 8c4e97ddfe73a0958bb0abf7e6a3bc4cc3e04936 (patch) | |
| tree | 54b6359f8cdeea50ffb7273d0e81b09b8961a4f1 /drivers/usb/storage | |
| parent | usb: typec: wcove: Remove dependency on HW FSM (diff) | |
| download | linux-8c4e97ddfe73a0958bb0abf7e6a3bc4cc3e04936.tar.xz linux-8c4e97ddfe73a0958bb0abf7e6a3bc4cc3e04936.zip | |
usb-storage: Add support for FL_ALWAYS_SYNC flag in the UAS driver
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>
Diffstat (limited to 'drivers/usb/storage')
| -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 6034c39b67d1..9e9de5452860 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; } |