diff options
| author | Oliver Neukum <oneukum@suse.com> | 2020-12-09 16:26:39 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-09 20:00:26 +0100 |
| commit | 8010622c86ca5bb44bc98492f5968726fc7c7a21 (patch) | |
| tree | b623c73856ab6609f3e6c81fa33702cad33a16f1 /drivers/usb/storage/uas.c | |
| parent | e5548b05631ec3e6bfdaef1cad28c799545b791b (diff) | |
| download | linux-stable-8010622c86ca5bb44bc98492f5968726fc7c7a21.tar.gz linux-stable-8010622c86ca5bb44bc98492f5968726fc7c7a21.tar.bz2 linux-stable-8010622c86ca5bb44bc98492f5968726fc7c7a21.zip | |
USB: UAS: introduce a quirk to set no_write_same
UAS does not share the pessimistic assumption storage is making that
devices cannot deal with WRITE_SAME. A few devices supported by UAS,
are reported to not deal well with WRITE_SAME. Those need a quirk.
Add it to the device that needs it.
Reported-by: David C. Partridge <david.partridge@perdrix.co.uk>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20201209152639.9195-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/storage/uas.c')
| -rw-r--r-- | drivers/usb/storage/uas.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 56422c4b4ff3..bef89c6bd1d7 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -868,6 +868,9 @@ static int uas_slave_configure(struct scsi_device *sdev) if (devinfo->flags & US_FL_NO_READ_CAPACITY_16) sdev->no_read_capacity_16 = 1; + /* Some disks cannot handle WRITE_SAME */ + if (devinfo->flags & US_FL_NO_SAME) + sdev->no_write_same = 1; /* * Some disks return the total number of blocks in response * to READ CAPACITY rather than the highest block number. |