gpu: nvgpu: vgpu: check timeout for tegra_gr_comm_recv

It's preparing for adding timeout in tegra_gr_comm_recv.

Bug 1728199

Change-Id: I1e2f647736e4b4cd8c194af2b843e27264ddf4fc
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: http://git-master/r/1011046
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vladislav Buzov <vbuzov@nvidia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/vgpu.c b/drivers/gpu/nvgpu/vgpu/vgpu.c
index c9d2ee92..4cc61cb1 100644
--- a/drivers/gpu/nvgpu/vgpu/vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/vgpu.c
@@ -109,6 +109,8 @@ static int vgpu_intr_thread(void *dev_id)
                 err = tegra_gr_comm_recv(TEGRA_GR_COMM_CTX_CLIENT,
                                         TEGRA_VGPU_QUEUE_INTR, &handle,
                                         (void **)&msg, &size, &sender);
+                if (err == -ETIME)
+                        continue;
                 if (WARN_ON(err))
                         continue;