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dma-buf/resv: fix exclusive fence get 

This causes kernel crash when testing lima driver.

Cc: Christian König <christian.koenig@amd.com>
Fixes: b8c036dfc6 ("dma-buf: simplify reservation_object_get_fences_rcu a bit")
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190922074900.853-1-yuq825@gmail.com
This commit is contained in:
Qiang Yu 2019-09-22 15:49:00 +08:00 committed by Chris Wilson
parent fb2ee9bf08
commit 7fbd0782bf
1 changed files with 1 additions and 1 deletions
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2
drivers/dma-buf/dma-resv.c
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@ -471,7 +471,7 @@ int dma_resv_get_fences_rcu(struct dma_resv *obj,
if (pfence_excl)
*pfence_excl = fence_excl;
else if (fence_excl)
shared[++shared_count] = fence_excl;
shared[shared_count++] = fence_excl;
if (!shared_count) {
kfree(shared);