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| /openbmc/linux/drivers/gpu/drm/armada/ |
| H A D | armada_crtc.c | diff c5488307dd679ea3fc23fec77dbf27191c2becda Sat Oct 11 17:53:35 CDT 2014 Russell King <rmk+kernel@arm.linux.org.uk> drm/armada: fix page_flip refcounting leak
A refcounting leak was found of the original frame buffer attached to
the CRTC when using the page_flip ioctl, resulting in the frame buffer
never being freed.
This was not obvious initially, as if the page flip subsequently
re-attaches the original frame buffer, the refcounts will be balanced.
However, if the original frame buffer is freed, then it will be leaked.
Fix this by ensuring that we take a reference on the incoming fb, but
rely on the queued work to drop that ref count.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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