Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756139AbcDJUnL (ORCPT ); Sun, 10 Apr 2016 16:43:11 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:51721 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756734AbcDJSiL (ORCPT ); Sun, 10 Apr 2016 14:38:11 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hans de Goede Subject: [PATCH 4.5 056/238] USB: uas: Reduce can_queue to MAX_CMNDS Date: Sun, 10 Apr 2016 11:33:53 -0700 Message-Id: <20160410183459.553599964@linuxfoundation.org> X-Mailer: git-send-email 2.8.0 In-Reply-To: <20160410183456.398741366@linuxfoundation.org> References: <20160410183456.398741366@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1305 Lines: 37 4.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hans de Goede commit 55ff8cfbc4e12a7d2187df523938cc671fbebdd1 upstream. The uas driver can never queue more then MAX_CMNDS (- 1) tags and tags are shared between luns, so there is no need to claim that we can_queue some random large number. Not claiming that we can_queue 65536 commands, fixes the uas driver failing to initialize while allocating the tag map with a "Page allocation failure (order 7)" error on systems which have been running for a while and thus have fragmented memory. Reported-and-tested-by: Yves-Alexis Perez Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/uas.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -812,7 +812,7 @@ static struct scsi_host_template uas_hos .slave_configure = uas_slave_configure, .eh_abort_handler = uas_eh_abort_handler, .eh_bus_reset_handler = uas_eh_bus_reset_handler, - .can_queue = 65536, /* Is there a limit on the _host_ ? */ + .can_queue = MAX_CMNDS, .this_id = -1, .sg_tablesize = SG_NONE, .skip_settle_delay = 1,