tree f423f666d0ec3d8c14d81e427639a91dac1ff19a
parent 0759f648470b5713b0ed89353607a8e0cd3f395e
author Lucas Stach <l.stach@pengutronix.de> 1629490704 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1632306475 +0200

drm/etnaviv: put submit prev MMU context when it exists

commit cda7532916f7bc860b36a1806cb8352e6f63dacb upstream.

The prev context is the MMU context at the time of the job
queueing in hardware. As a job might be queued multiple times
due to recovery after a GPU hang, we need to make sure to put
the stale prev MMU context from a prior queuing, to avoid the
reference and thus the MMU context leaking.

Cc: stable@vger.kernel.org # 5.4
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Michael Walle <michael@walle.cc>
Tested-by: Marek Vasut <marex@denx.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>