linux-kernel - Re: [patch] gpiolib: fix oops in gpio_get_value

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Message-Id: <200810161744.34005.david-b@pacbell.net>
Date:	Thu, 16 Oct 2008 17:44:33 -0700
From:	David Brownell <david-b@...bell.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	avorontsov@...mvista.com, linux-kernel@...r.kernel.org,
	stable@...nel.org
Subject: Re: [patch] gpiolib: fix oops in gpio_get_value_cansleep()

On Thursday 16 October 2008, Andrew Morton wrote:
> > From: David Brownell <dbrownell@...rs.sourceforge.net>
> > 
> > We can get the following oops from gpio_get_value_cansleep()
> > when a GPIO controller doesn't provide a get() callback:
> 
> We can, but do we? ;)

I think it's unlikely without the sysfs interface.


> iow: is this needed in any -stable release?

The bug has been there since 2.6.25 but nobody else seems
to have reported it.  Is the general policy to fix all
oopses that *could* appear?  I'd send it for 2.6.27-stable,
since that's got the sysfs hooks.  And older kernels if
bug likelihood isn't a major concern.

- Dave
 


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