linux-kernel - Re: [PATCH] video4linux: Push down the BKL

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Date:	Sun, 25 May 2008 18:46:24 -0500 (CDT)
From:	Mike Isely <isely@...ly.net>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
cc:	Video4Linux list <video4linux-list@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	Mike Isely at pobox <isely@...ox.com>
Subject: Re: [PATCH] video4linux: Push down the BKL

On Thu, 22 May 2008, Alan Cox wrote:

> For most drivers the generic ioctl handler does the work and we update it
> and it becomes the unlocked_ioctl method. Older drivers use the usercopy
> method so we make it do the work. Finally there are a few special cases.
> 
> Signed-off-by: Alan Cox <alan@...hat.com>

The pvrusb2 driver already should not require the BKL.  Though since 
this driver (like every V4L driver) is using video_usercopy() then it's 
obviously going along for the ride here with respect to the overall 
issue here in pushing the lock down into video_usercopy().  In the mean 
time, for the pvrusb2 portion of this patch...

Acked-By: Mike Isely <isely@...ox.com>

  -Mike

-- 

Mike Isely
isely @ pobox (dot) com
PGP: 03 54 43 4D 75 E5 CC 92 71 16 01 E2 B5 F5 C1 E8
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