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Commit 069cad6d authored by Gustavo Padovan's avatar Gustavo Padovan Committed by Daniel Vetter
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Revert "dma-buf/sync-file: Avoid enable fence signaling if poll(.timeout=0)" 



This reverts commit ecebca79.

Do not enable fence callback on poll() when using fence_array causes the
fence_array to not signal.

For now we will revert the change and enable signaling everytime time
poll is called with timeout=0 as well.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarGustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1479457603-30758-1-git-send-email-gustavo@padovan.org
parent 4ada6f22

drivers/dma-buf/sync_file.c

+1 −2
Original line number Diff line number Diff line
@@ -308,8 +308,7 @@ static unsigned int sync_file_poll(struct file *file, poll_table *wait) 


	poll_wait(file, &sync_file->wq, wait);



	if (!poll_does_not_wait(wait) &&

	    !test_and_set_bit(POLL_ENABLED, &sync_file->fence->flags)) {

	if (!test_and_set_bit(POLL_ENABLED, &sync_file->fence->flags)) {

		if (dma_fence_add_callback(sync_file->fence, &sync_file->cb,

					   fence_check_cb_func) < 0)

			wake_up_all(&sync_file->wq);