1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c b/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
index 119030f9..127d0258 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
@@ -284,7 +284,7 @@ static ssize_t railgate_enable_store(struct device *dev,
         struct generic_pm_domain *genpd = dev_to_genpd(dev);
         struct gk20a *g = get_gk20a(dev);
         unsigned long railgate_enable = 0;
-        int err;
+        int err = 0;
 
         if (kstrtoul(buf, 10, &railgate_enable) < 0)
                 return -EINVAL;
@@ -309,6 +309,9 @@ static ssize_t railgate_enable_store(struct device *dev,
                         err = platform->unrailgate(dev);
                 mutex_unlock(&platform->railgate_lock);
         }
+        if (err)
+                return err;
+
         dev_info(dev, "railgate is %s.\n", platform->can_railgate ?
                 "enabled" : "disabled");
         /* wake-up system to make railgating_enable effective immediately */