netdev - Re: 2.6.30-rc2-git2: Reported regressions from 2.6.29

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Date:	Sat, 18 Apr 2009 10:32:26 +0800
From:	leiming <tom.leiming@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Adrian Bunk <bunk@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Natalie Protasevich <protasnb@...il.com>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Network Development <netdev@...r.kernel.org>,
	Linux ACPI <linux-acpi@...r.kernel.org>,
	Linux PM List <linux-pm@...ts.linux-foundation.org>,
	Linux SCSI List <linux-scsi@...r.kernel.org>,
	video4linux-list@...hat.com, laurent.pinchart@...net.be,
	mchehab@...radead.org
Subject: Re: 2.6.30-rc2-git2: Reported regressions from 2.6.29

于 Fri, 17 Apr 2009 23:36:11 +0200
"Rafael J. Wysocki" <rjw@...k.pl> 写道:

> On Friday 17 April 2009, Ming Lei wrote:
> > 2009/4/17 Rafael J. Wysocki <rjw@...k.pl>:
> > >
> > > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=13125
> > > Subject         : active uvcvideo breaks over suspend
> > > Submitter       : Alan Jenkins <alan-jenkins@...fmail.co.uk>
> > > Date            : 2009-04-15 10:12 (2 days old)
> > > References      :
> > > http://marc.info/?l=linux-kernel&m=123979009508840&w=4
> > >
> > 
> > It is a bug in resume path of uvcvideo driver, and I have sent a
> > patch to laurent.pinchart@...net.be,
> > mchehab@...radead.org  and video4linux-list@...hat.com to fix it,
> > but still no echo from them.
> > 
> > The patch title is V4L/DVB:usbvideo:fix uvc resume failed.
> > 
> > Rafael J.
> >         If you would like to apply it ,I can resend to you.  Thanks!
> 
> Please resend.
> 
> Rafael

>From 5715e310a939f3f7cd3e88eae8f25fedbb28def4 Mon Sep 17 00:00:00 2001
From: Ming Lei <tom.leiming@...il.com>
Date: Wed, 15 Apr 2009 22:32:51 +0800
Subject: [PATCH] V4L/DVB:usbvideo:fix uvc resume failed

Now urb buffers is not freed before suspend, so uvc_alloc_urb_buffers
should return packet counts allocated originally during uvc resume
, instead of zero.

This patch is against v2.6.30-rc2.

Signed-off-by: Ming Lei <tom.leiming@...il.com>
---
 drivers/media/video/uvc/uvc_video.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c
index a95e173..c050b22 100644
--- a/drivers/media/video/uvc/uvc_video.c
+++ b/drivers/media/video/uvc/uvc_video.c
@@ -742,7 +742,7 @@ static int uvc_alloc_urb_buffers(struct uvc_video_device *video,
 
 	/* Buffers are already allocated, bail out. */
 	if (video->urb_size)
-		return 0;
+		return DIV_ROUND_UP(video->urb_size, psize);
 
 	/* Compute the number of packets. Bulk endpoints might transfer UVC
 	 * payloads accross multiple URBs.
-- 
1.6.0.GIT



-- 
Lei Ming
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