media: omap3isp: fix unbalanced dma_iommu_mapping

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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>
Tested-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

...

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Suman Anna 2018-03-14 11:41:36 -04:00 • committed by Mauro Carvalho Chehab

parent 1d338b86e1

commit b7e1e6859f

1 changed files with 4 additions and 3 deletions

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drivers/media/platform/omap3isp/isp.c

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