USB: uas: Fix slave queue_depth not being set
authorHans de Goede <hdegoede@redhat.com>
Tue, 31 May 2016 07:18:03 +0000 (09:18 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 1 Jun 2016 21:56:24 +0000 (14:56 -0700)
commit593224ea77b1ca842f45cf76f4deeef44dfbacd1
tree9f64fbb4591035fc534fd2f540858a9f3f4edadf
parent5fc363232ae76805d7f570dbb61758095a540591
USB: uas: Fix slave queue_depth not being set

Commit 198de51dbc34 ("USB: uas: Limit qdepth at the scsi-host level")
removed the scsi_change_queue_depth() call from uas_slave_configure()
assuming that the slave would inherit the host's queue_depth, which
that commit sets to the same value.

This is incorrect, without the scsi_change_queue_depth() call the slave's
queue_depth defaults to 1, introducing a performance regression.

This commit restores the call, fixing the performance regression.

Cc: stable@vger.kernel.org
Fixes: 198de51dbc34 ("USB: uas: Limit qdepth at the scsi-host level")
Reported-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/storage/uas.c