From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761710AbZATWLY (ORCPT ); Tue, 20 Jan 2009 17:11:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755153AbZATWLK (ORCPT ); Tue, 20 Jan 2009 17:11:10 -0500 Received: from fmmailgate02.web.de ([217.72.192.227]:36311 "EHLO fmmailgate02.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754326AbZATWLI (ORCPT ); Tue, 20 Jan 2009 17:11:08 -0500 From: Christian Lamparter To: "Rafael J. Wysocki" , Greg KH gr , Artur Skawina Subject: [PATCH -stable] p54usb: fix traffic stalls / packet drop Date: Tue, 20 Jan 2009 23:11:11 +0100 User-Agent: KMail/1.9.9 Cc: Linux Kernel Mailing List , Kernel Testers List , "Larry Finger" , "Linux wireless" References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200901202311.11854.chunkeey@web.de> X-Provags-ID: V01U2FsdGVkX1/nhsg7h1IRau5qSw6mZ4vUje1uq3w2CjDGjGc7 2tSWPap7mjVG22AZcYpyAHFomaY2PONV28s49vgz6rYc4dp1qU nMg1QWwI8= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org All p54usb devices need a explicit termination packet, in oder to finish the pending transfer properly. Else, the firmware could freeze, or simply drop the frame. Signed-off-by: Christian Lamparter Cc: stable --- Attached is the patch is for the stable series only. Bugzilla reference: http://bugzilla.kernel.org/show_bug.cgi?id=12260 (wireless-testing needs a different one) Rafael, I hope we can close this bug. Greg? --- diff --git a/drivers/net/wireless/p54/p54usb.c b/drivers/net/wireless/p54/p54usb.c index 75d749b..be40369 100644 --- a/drivers/net/wireless/p54/p54usb.c +++ b/drivers/net/wireless/p54/p54usb.c @@ -214,6 +214,8 @@ static void p54u_tx_3887(struct ieee80211_hw *dev, struct p54_control_hdr *data, usb_fill_bulk_urb(data_urb, priv->udev, usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA), data, len, free_on_tx ? p54u_tx_free_cb : p54u_tx_cb, dev); + addr_urb->transfer_flags |= URB_ZERO_PACKET; + data_urb->transfer_flags |= URB_ZERO_PACKET; usb_submit_urb(addr_urb, GFP_ATOMIC); usb_submit_urb(data_urb, GFP_ATOMIC); @@ -251,6 +253,7 @@ static void p54u_tx_lm87(struct ieee80211_hw *dev, usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA), hdr, len + sizeof(*hdr), free_on_tx ? p54u_tx_free_cb : p54u_tx_cb, dev); + data_urb->transfer_flags |= URB_ZERO_PACKET; usb_submit_urb(data_urb, GFP_ATOMIC); } @@ -293,11 +296,13 @@ static void p54u_tx_net2280(struct ieee80211_hw *dev, struct p54_control_hdr *da usb_fill_bulk_urb(int_urb, priv->udev, usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg), p54u_tx_free_cb, dev); + int_urb->transfer_flags |= URB_ZERO_PACKET; usb_submit_urb(int_urb, GFP_ATOMIC); usb_fill_bulk_urb(data_urb, priv->udev, usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA), hdr, len + sizeof(*hdr), free_on_tx ? p54u_tx_free_cb : p54u_tx_cb, dev); + data_urb->transfer_flags |= URB_ZERO_PACKET; usb_submit_urb(data_urb, GFP_ATOMIC); }