1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/clk_gk20a.c b/drivers/gpu/nvgpu/gk20a/clk_gk20a.c
index 2c4f1bf4..34f3f886 100644
--- a/drivers/gpu/nvgpu/gk20a/clk_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/clk_gk20a.c
@@ -439,6 +439,11 @@ static int gk20a_init_clk_setup_sw(struct gk20a *g)
 
         clk->gpc_pll.id = GK20A_GPC_PLL;
         clk->gpc_pll.clk_in = ref_rate / KHZ;
+        if (clk->gpc_pll.clk_in == 0) {
+                gk20a_err(dev_from_gk20a(g),
+                        "GPCPLL reference clock is zero");
+                return -EINVAL;
+        }
 
         /* Decide initial frequency */
         if (!initialized) {