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drm/etnaviv: fix MMU context leak on GPU reset
commit f978a5302f
upstream.
After a reset the GPU is no longer using the MMU context and may be
restarted with a different context. While the mmu_state proeprly was
cleared, the context wasn't unreferenced, leading to a memory leak.
Cc: stable@vger.kernel.org # 5.4
Reported-by: Michael Walle <michael@walle.cc>
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>
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1 changed files with 2 additions and 0 deletions
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@ -563,6 +563,8 @@ static int etnaviv_hw_reset(struct etnaviv_gpu *gpu)
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gpu->fe_running = false;
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gpu->exec_state = -1;
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if (gpu->mmu_context)
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etnaviv_iommu_context_put(gpu->mmu_context);
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gpu->mmu_context = NULL;
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return 0;
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