diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2014-08-01 17:33:08 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-08-01 15:48:08 -0700 |
| commit | e2875c33787ebda21aeecc1a9d3ff52b3aa413ec (patch) | |
| tree | e87c807803a82ab7ca220079f590979e0f991056 | |
| parent | 3dbef993c0eb113bf8e85abff8dd57fa33d5bb9b (diff) | |
| download | linux-e2875c33787ebda21aeecc1a9d3ff52b3aa413ec.tar.bz2 | |
uas: Limit qdepth to 32 when connected over usb-2
Some jmicron uas chipsets act up (they disconnect from the bus) when sending
more then 32 commands to them at once.
Rather then building an ever growing list with usb-id based quirks for
devices using this chipset, simply reduce the qdepth to 32 when connected
over usb-2. 32 should be plenty to keep things close to maximum
possible throughput on usb-2.
Cc: stable@vger.kernel.org
Tested-and-reported-by: Laszlo T. <tlacix@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/storage/uas.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 511b22953167..3f42785f653c 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -1026,7 +1026,7 @@ static int uas_configure_endpoints(struct uas_dev_info *devinfo) usb_endpoint_num(&eps[3]->desc)); if (udev->speed != USB_SPEED_SUPER) { - devinfo->qdepth = 256; + devinfo->qdepth = 32; devinfo->use_streams = 0; } else { devinfo->qdepth = usb_alloc_streams(devinfo->intf, eps + 1, |