From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752653AbdGJGo0 (ORCPT ); Mon, 10 Jul 2017 02:44:26 -0400 Received: from [216.228.121.65] ([216.228.121.65]:19270 "EHLO hqemgate16.nvidia.com" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1750847AbdGJGoY (ORCPT ); Mon, 10 Jul 2017 02:44:24 -0400 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Sun, 09 Jul 2017 23:43:56 -0700 From: Jim Lin To: , CC: , , Jim Lin Subject: [PATCH 1/1 V2] media: usb: uvc: Fix incorrect timeout for Get Request Date: Mon, 10 Jul 2017 14:43:49 +0800 Message-ID: <1499669029-3412-1-git-send-email-jilin@nvidia.com> X-Mailer: git-send-email 2.7.4 X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Section 9.2.6.4 of USB 2.0/3.x specification describes that "device must be able to return the first data packet to host within 500 ms of receipt of the request. For subsequent data packet, if any, the device must be able to return them within 500 ms". This is to fix incorrect timeout and change it from 300 ms to 500 ms to meet the timing specified by specification for Get Request. Signed-off-by: Jim Lin --- V2: Change patch description drivers/media/usb/uvc/uvcvideo.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index 15e415e..296b69b 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -166,7 +166,7 @@ /* Maximum status buffer size in bytes of interrupt URB. */ #define UVC_MAX_STATUS_SIZE 16 -#define UVC_CTRL_CONTROL_TIMEOUT 300 +#define UVC_CTRL_CONTROL_TIMEOUT 500 #define UVC_CTRL_STREAMING_TIMEOUT 5000 /* Maximum allowed number of control mappings per device */ -- 2.7.4