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DRM: armada: fix use of kfifo_put() 

The kfifo_put() API changed in 498d319bb5 (kfifo API type safety)
which now results in the wrong pointer being added to the kfifo ring,
which then causes an oops.  Fix this.

Cc: <stable@vger.kernel.org> # 3.13
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2014-03-03 14:49:51 +00:00
parent bed86f15bd
commit d13c46c67e
1 changed files with 1 additions and 9 deletions
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10
drivers/gpu/drm/armada/armada_drv.c
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@ -68,15 +68,7 @@ void __armada_drm_queue_unref_work(struct drm_device *dev,
{
struct armada_private *priv = dev->dev_private;
/*
* Yes, we really must jump through these hoops just to store a
* _pointer_ to something into the kfifo. This is utterly insane
* and idiotic, because it kfifo requires the _data_ pointed to by
* the pointer const, not the pointer itself. Not only that, but
* you have to pass a pointer _to_ the pointer you want stored.
*/
const struct drm_framebuffer *silly_api_alert = fb;
WARN_ON(!kfifo_put(&priv->fb_unref, &silly_api_alert));
WARN_ON(!kfifo_put(&priv->fb_unref, fb));
schedule_work(&priv->fb_unref_work);
}