1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c b/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
index f6b43f50..14629fbe 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
@@ -268,6 +268,7 @@ static ssize_t elpg_enable_store(struct device *device,
         struct platform_device *ndev = to_platform_device(device);
         struct gk20a *g = get_gk20a(ndev);
         unsigned long val = 0;
+        int err;
 
         if (kstrtoul(buf, 10, &val) < 0)
                 return -EINVAL;
@@ -276,7 +277,10 @@ static ssize_t elpg_enable_store(struct device *device,
          * Since elpg is refcounted, we should not unnecessarily call
          * enable/disable if it is already so.
          */
-        gk20a_channel_busy(g->dev);
+        err = gk20a_channel_busy(g->dev);
+        if (err)
+                return -EAGAIN;
+
         if (val && !g->elpg_enabled) {
                 g->elpg_enabled = true;
                 gk20a_pmu_enable_elpg(g);