[cip-dev] [RFC/PATCH] dmaengine: ensure dmaengine helpers check valid callback

[ben.hutchings@codethink.co.uk (Ben Hutchings)]

On Thu, 2018-03-08 at 16:45 +0000, Fabrizio Castro wrote:
> From: Vinod Koul <vinod.koul@intel.com>
> 
> dmaengine has various device callbacks and exposes helper
> functions to invoke these. These helpers should check if channel,
> device and callback is valid or not before invoking them.
> 
> Reported-by: Jon Hunter <jonathanh@nvidia.com>
> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
> (cherry picked from commit 757d12e5849be549076901b0d33c60d5f360269c)
> Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
> Signed-off-by: Jianming Qiao <jianming.qiao@bp.renesas.com>
> ---
> Hello Ben,
> 
> we have stumbled upon a problem, and discovered there was this fix
> upstream we would like to backport.
> 
> Do you think this should go through v4.4 LTS first or are you happy
> to take it?

I can apply it now, but if the bug affects 4.4 LTS or other stable
branches without CIP's extra backports then you should also send it to
stable at vger.kernel.org.

Ben.

-- 
Ben Hutchings
Software Developer, Codethink Ltd.