drm/panfrost: Remove unnecessary mmu->lock mutex

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: 7282f7645d06 ("drm/panfrost: Implement per FD address spaces")
Suggested-by: Robin Murphy <[email protected]>
Cc: Tomeu Vizoso <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Daniel Vetter <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
Acked-by: Alyssa Rosenzweig <[email protected]>
Reviewed-by: Robin Murphy <[email protected]>
Reviewed-by: Steven Price <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

0 files changed, 0 insertions, 0 deletions