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, 11 insertions, 4 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c b/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c
index b196e330..53fab0d9 100644
--- a/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c
@@ -91,7 +91,10 @@ static int gk20a_ctrl_prepare_compressible_read(
         fence.syncpt_id = args->fence.syncpt_id;
         fence.value = args->fence.syncpt_value;
 
-        gk20a_busy(g->dev);
+        ret = gk20a_busy(g->dev);
+        if (ret)
+                return ret;
+
         ret = gk20a_prepare_compressible_read(g, args->handle,
                         args->request_compbits, args->offset,
                         args->compbits_hoffset, args->compbits_voffset,
@@ -137,7 +140,9 @@ static int gk20a_ctrl_mark_compressible_write(
 {
         int ret = 0;
 
-        gk20a_busy(g->dev);
+        ret = gk20a_busy(g->dev);
+        if (ret)
+                return ret;
         ret = gk20a_mark_compressible_write(g, args->handle,
                         args->valid_compbits, args->offset, args->zbc_color);
         gk20a_idle(g->dev);
@@ -249,8 +254,10 @@ long gk20a_ctrl_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg
                 }
 
                 if (!err) {
-                        gk20a_busy(dev);
-                        err = gk20a_gr_zbc_set_table(g, &g->gr, zbc_val);
+                        err = gk20a_busy(dev);
+                        if (!err)
+                                err = gk20a_gr_zbc_set_table(g, &g->gr,
+                                                             zbc_val);
                         gk20a_idle(dev);
                 }