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dma-buf/fence: fix fence_is_later v2

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A fence is never later than itself. This caused a bunch of overhead for AMDGPU.

v2: simplify check as suggested by Michel.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Christian König 2016-02-29 10:53:11 -05:00 committed by Daniel Vetter
parent 87e332d56b
commit b47bcb93bb
1 changed files with 1 additions and 1 deletions
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2
include/linux/fence.h
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@ -292,7 +292,7 @@ static inline bool fence_is_later(struct fence *f1, struct fence *f2)
if (WARN_ON(f1->context != f2->context))
return false;
return f1->seqno - f2->seqno < INT_MAX;
return (int)(f1->seqno - f2->seqno) > 0;
}
/**