From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760009Ab3LBV3t (ORCPT ); Mon, 2 Dec 2013 16:29:49 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:38178 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753263Ab3LBTHC (ORCPT ); Mon, 2 Dec 2013 14:07:02 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Malcolm Priestley Subject: [PATCH 3.4 27/60] staging: vt6656: [BUG] Fix for TX USB resets from vendors driver. Date: Mon, 2 Dec 2013 11:06:08 -0800 Message-Id: <20131202190336.128479431@linuxfoundation.org> X-Mailer: git-send-email 1.8.4.3.gca3854a In-Reply-To: <20131202190330.152596462@linuxfoundation.org> References: <20131202190330.152596462@linuxfoundation.org> User-Agent: quilt/0.60-8.1.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Malcolm Priestley commit 9df682927c2e3a92f43803d6b52095992e3b2ab8 upstream. This fixes resets on heavy TX data traffic. Vendor driver VT6656_Linux_src_v1.21.03_x86_11.04.zip http://www.viaembedded.com/servlet/downloadSvl?id=1890&download_file_id=14704 This is GPL-licensed code. original code BBbVT3184Init ... //2007-0725, RobertChang add, Enable Squelch detect reset option(SQ_RST_Opt), USB (register4, bit1) CONTROLnsRequestIn(pDevice, MESSAGE_TYPE_READ, (WORD)0x600+4, // USB's Reg4's bit1 MESSAGE_REQUEST_MEM, 1, (PBYTE) &byData); byData = byData|2 ; CONTROLnsRequestOut(pDevice, MESSAGE_TYPE_WRITE, (WORD)0x600+4, // USB's Reg4's bit1 MESSAGE_REQUEST_MEM, 1, (PBYTE) &byData); return TRUE;//ntStatus; .... A back port patch is needed for kernels less than 3.10. Signed-off-by: Malcolm Priestley Signed-off-by: Greg Kroah-Hartman --- drivers/staging/vt6656/baseband.c | 11 +++++++++++ drivers/staging/vt6656/rndis.h | 1 + 2 files changed, 12 insertions(+) --- a/drivers/staging/vt6656/baseband.c +++ b/drivers/staging/vt6656/baseband.c @@ -976,6 +976,7 @@ BOOL BBbVT3184Init(PSDevice pDevice) PBYTE pbyAgc; WORD wLengthAgc; BYTE abyArray[256]; + u8 data; ntStatus = CONTROLnsRequestIn(pDevice, MESSAGE_TYPE_READ, @@ -1144,6 +1145,16 @@ else { ControlvWriteByte(pDevice,MESSAGE_REQUEST_BBREG,0x0D,0x01); RFbRFTableDownload(pDevice); + + /* Fix for TX USB resets from vendors driver */ + CONTROLnsRequestIn(pDevice, MESSAGE_TYPE_READ, USB_REG4, + MESSAGE_REQUEST_MEM, sizeof(data), &data); + + data |= 0x2; + + CONTROLnsRequestOut(pDevice, MESSAGE_TYPE_WRITE, USB_REG4, + MESSAGE_REQUEST_MEM, sizeof(data), &data); + return TRUE;//ntStatus; } --- a/drivers/staging/vt6656/rndis.h +++ b/drivers/staging/vt6656/rndis.h @@ -69,6 +69,7 @@ #define VIAUSB20_PACKET_HEADER 0x04 +#define USB_REG4 0x604 /*--------------------- Export Classes ----------------------------*/