Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/panfrost: Don't sync rpm suspension after mmu flushing
Lockdep warns about potential circular locking dependency of devfreq
with the fs_reclaim caused by immediate device suspension when mapping is
released by shrinker. Fix it by doing the suspension asynchronously.
Reviewed-by: Steven Price <steven.price@arm.com>
Fixes: ec7eba47da86 ("drm/panfrost: Rework page table flushing and runtime PM interaction")
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://lore.kernel.org/all/20230108210445.3948344-3-dmitry.osipenko@collabora.com/
+1
-1
+1
-1
drivers/gpu/drm/panfrost/panfrost_mmu.c
+1
-1
drivers/gpu/drm/panfrost/panfrost_mmu.c
···
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if (pm_runtime_active(pfdev->dev))
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mmu_hw_do_operation(pfdev, mmu, iova, size, AS_COMMAND_FLUSH_PT);
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-
pm_runtime_put_sync_autosuspend(pfdev->dev);
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+
pm_runtime_put_autosuspend(pfdev->dev);
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}
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static int mmu_map_sg(struct panfrost_device *pfdev, struct panfrost_mmu *mmu,