drm/etnaviv: (re-)protect fence allocation with GPU mutex

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commit f3cd1b064f upstream.

The fence allocation needs to be protected by the GPU mutex, otherwise
the fence seqnos of concurrent submits might not match the insertion order
of the jobs in the kernel ring. This breaks the assumption that jobs
complete with monotonically increasing fence seqnos.

Fixes: d985349017 (drm/etnaviv: take GPU lock later in the submit process)
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Lucas Stach 2017-03-22 12:07:23 +01:00 • committed by Greg Kroah-Hartman

parent 6acf520708

commit 4366c7e346

1 changed files with 2 additions and 2 deletions

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drivers/gpu/drm/etnaviv/etnaviv_gpu.c

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