drm/panfrost: Remove unnecessary mmu->lock mutex

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There's no need to serialize io-pgtable calls and the as_lock is
sufficient to serialize flush operations, so we can remove the per
page table lock.

Fixes: 7282f7645d ("drm/panfrost: Implement per FD address spaces")
Suggested-by: Robin Murphy <robin.murphy@arm.com>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190826223317.28509-4-robh@kernel.org

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This commit is contained in:

Rob Herring 2019-08-26 17:33:12 -05:00

parent 330bec4b7c

commit e316f08f1a

2 changed files with 0 additions and 10 deletions

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1

drivers/gpu/drm/panfrost/panfrost_device.h

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9

drivers/gpu/drm/panfrost/panfrost_mmu.c

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