iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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>
This commit is contained in:
Lucas Stach 2021-08-20 22:18:24 +02:00
parent 78edefc05e
commit cda7532916
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/etnaviv/etnaviv_gpu.c
View File

@ -1374,6 +1374,8 @@ struct dma_fence *etnaviv_gpu_submit(struct etnaviv_gem_submit *submit)
gpu->mmu_context = etnaviv_iommu_context_get(submit->mmu_context);
etnaviv_gpu_start_fe_idleloop(gpu);
} else {
if (submit->prev_mmu_context)
etnaviv_iommu_context_put(submit->prev_mmu_context);
submit->prev_mmu_context = etnaviv_iommu_context_get(gpu->mmu_context);
}