Merge tag 'fbdev-v4.13-rc5' of git://github.com/bzolnier/linux

[karo-tx-linux.git] / drivers / dma-buf / sync_file.c

diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
index d7e219d2669daf01c935bd18c0836cb88a34e075..66fb40d0ebdbbec521499cd58cf2e1d55c195878 100644 (file)
--- a/drivers/dma-buf/sync_file.c
+++ b/drivers/dma-buf/sync_file.c
@@ -304,7 +304,7 @@ static int sync_file_release(struct inode *inode, struct file *file)
 {
        struct sync_file *sync_file = file->private_data;
 
-       if (test_bit(POLL_ENABLED, &sync_file->fence->flags))
+       if (test_bit(POLL_ENABLED, &sync_file->flags))
                dma_fence_remove_callback(sync_file->fence, &sync_file->cb);
        dma_fence_put(sync_file->fence);
        kfree(sync_file);
@@ -318,7 +318,8 @@ static unsigned int sync_file_poll(struct file *file, poll_table *wait)
 
        poll_wait(file, &sync_file->wq, wait);
 
-       if (!test_and_set_bit(POLL_ENABLED, &sync_file->fence->flags)) {
+       if (list_empty(&sync_file->cb.node) &&
+           !test_and_set_bit(POLL_ENABLED, &sync_file->flags)) {
                if (dma_fence_add_callback(sync_file->fence, &sync_file->cb,
                                           fence_check_cb_func) < 0)
                        wake_up_all(&sync_file->wq);