1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mc_gk20a.c b/drivers/gpu/nvgpu/gk20a/mc_gk20a.c
index 9d9256bd..5027eaa4 100644
--- a/drivers/gpu/nvgpu/gk20a/mc_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mc_gk20a.c
@@ -200,7 +200,10 @@ void gk20a_mc_reset(struct gk20a *g, u32 units)
 
 u32 gk20a_mc_boot_0(struct gk20a *g, u32 *arch, u32 *impl, u32 *rev)
 {
-        u32 val = gk20a_readl(g, mc_boot_0_r());
+        u32 val = __nvgpu_readl(g, mc_boot_0_r());
+
+        if (val == 0xffffffff)
+                return val;
 
         if (arch)
                 *arch = mc_boot_0_architecture_v(val) <<