Subject: [PATCH] dma/coh901318: use simple_read_from_buffer

From: [email-masked] (Arnd Bergmann)
Date: Fri, 22 Oct 2010 21:16:31 +0200

On Friday 22 October 2010 20:30:39 Nicolas Kaiser wrote:
> * Arnd Bergmann <[email-masked]>:
> > On Friday 22 October 2010 19:29:53 Nicolas Kaiser wrote:
> > > If copy_to_user fails, the assigned error code instantly gets
> > > overwritten, and the failure apparently ignored. Moreover,
> > > shouldn't the error code be -EFAULT instead of -EINVAL?
> > 
> > Looks good, but it would be even better to just use
> > simple_read_from_buffer in this function, which takes care of
> > a lot the other complexities as well.
> 
> Like this? (Sorry, untested.)
> 
> Signed-off-by: Nicolas Kaiser <[email-masked]>

Yes, exactly. For stable kernels, your smaller fix is probably good
enough though and it's obviously correct.

	Arnd