gpu: nvgpu: Fix invalid test for signaled sync_fences

Fix a check that was backwards for signaled sync_fences. This would cause
the code to not wait on some sync_fences that had not already signaled and
wait on other fences that had signaled.

Bug 1787348

Reviewed-on: http://git-master/r/1204710
(cherry picked from commit 75b94bb30f79c3a7a9992773dc8a93b507121006)
Change-Id: I00b0f8a373a9954a5ad9ab31aff6423e91574153
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1221044
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
index 0eff4e2f..7a71c4eb 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
@@ -606,7 +606,7 @@ static int gk20a_channel_semaphore_wait_fd(
 #else
         status = atomic_read(&sync_fence->status);
 #endif
-        if (status) {
+        if (status == 0) {
                 sync_fence_put(sync_fence);
                 goto skip_slow_path;
         }