staging: sync: Dump sync state on fence errors

When we get a bad status, dump sync state

Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Added commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/android/sync.c b/drivers/staging/android/sync.c
index 92cdfe8031d1772d742b7b317453e30ef0dac091..36ffa20248754a74b15a10b5050494e5f7377ed0 100644 (file)
--- a/drivers/staging/android/sync.c
+++ b/drivers/staging/android/sync.c
@@ -572,8 +572,11 @@ int sync_fence_wait(struct sync_fence *fence, long timeout)
        if (err < 0)
                return err;
 
-       if (fence->status < 0)
+       if (fence->status < 0) {
+               pr_info("fence error %d on [%p]\n", fence->status, fence);
+               sync_dump();
                return fence->status;
+       }
 
        if (fence->status == 0) {
                pr_info("fence timeout on [%p] after %dms\n", fence,