[PATCH v2] media: omap3isp: fix unbalanced dma_iommu_mapping

[pavel@ucw.cz (Pavel Machek)]

On Wed 2018-03-14 10:41:36, Suman Anna wrote:
> The OMAP3 ISP driver manages its MMU mappings through the IOMMU-aware
> ARM DMA backend. The current code creates a dma_iommu_mapping and
> attaches this to the ISP device, but never detaches the mapping in
> either the probe failure paths or the driver remove path resulting
> in an unbalanced mapping refcount and a memory leak. Fix this properly.
> 
> Reported-by: Pavel Machek <pavel@ucw.cz>
> Signed-off-by: Suman Anna <s-anna@ti.com>
> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> ---
> v2 Changes:
>  - Dropped the error_attach label, and returned directly from the
>    first error path (comments from Sakari)
>  - Added Sakari's Acked-by
> v1: https://patchwork.kernel.org/patch/10276759/
> 
> Pavel,
> I dropped your Tested-by from v2 since I modified the patch, can you
> recheck the new patch again? Thanks.

I updated to new -next version and re-ran the test.

Tested-by: Pavel Machek <pavel@ucw.cz>
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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