gpu: nvgpu: cde: check return values from busy

check gk20a_busy return value in cde converter code paths.

Bug 200040921

Change-Id: Ibad36df5877e325636a0a6ccc30c0d3d076ca941
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/540006

1 files changed, 10 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/cde_gk20a.c b/drivers/gpu/nvgpu/gk20a/cde_gk20a.c
index 3644c2ef..c2e2cc98 100644
--- a/drivers/gpu/nvgpu/gk20a/cde_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/cde_gk20a.c
@@ -842,7 +842,9 @@ int gk20a_cde_reload(struct gk20a *g)
         int err, i;
 
         if (!cde_app->initialised) {
-                gk20a_busy(g->dev);
+                err = gk20a_busy(g->dev);
+                if (err)
+                        return err;
                 gk20a_init_cde_support(g);
                 gk20a_idle(g->dev);
                 if (!cde_app->initialised)
@@ -850,7 +852,10 @@ int gk20a_cde_reload(struct gk20a *g)
                 return 0;
         }
 
-        gk20a_busy(g->dev);
+        err = gk20a_busy(g->dev);
+        if (err)
+                return err;
+
         mutex_lock(&cde_app->mutex);
         for (i = 0; i < ARRAY_SIZE(cde_app->cde_ctx); i++, cde_ctx++) {
                 gk20a_cde_remove(cde_ctx);
@@ -1043,7 +1048,9 @@ static int gk20a_buffer_convert_gpu_to_cde(
         WRITE_PATCH(PATCH_QMD_CTA_THREAD_DIMENSION2, 1);
 #undef WRITE_PATCH
 
-        gk20a_busy(g->dev);
+        err = gk20a_busy(g->dev);
+        if (err)
+                return err;
         err = gk20a_init_cde_support(g);
         if (err)
                 goto out;