1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/nvlink.c b/drivers/gpu/nvgpu/os/linux/nvlink.c
index c93514c0..0db483d6 100644
--- a/drivers/gpu/nvgpu/os/linux/nvlink.c
+++ b/drivers/gpu/nvgpu/os/linux/nvlink.c
@@ -14,6 +14,10 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#ifdef CONFIG_TEGRA_NVLINK
+#include <linux/platform/tegra/tegra-nvlink.h>
+#endif
+
 #include <gk20a/gk20a.h>
 #include <nvgpu/nvlink.h>
 #include <nvgpu/enabled.h>
@@ -104,3 +108,25 @@ void nvgpu_mss_nvlink_init_credits(struct gk20a *g)
                 val = readl_relaxed(soc4 + 4);
                 writel_relaxed(val, soc4 + 4);
 }
+
+int nvgpu_nvlink_deinit(struct gk20a *g)
+{
+#ifdef CONFIG_TEGRA_NVLINK
+        struct nvlink_device *ndev = g->nvlink.priv;
+        int err;
+
+        if (!nvgpu_is_enabled(g, NVGPU_SUPPORT_NVLINK))
+                return -ENODEV;
+
+        err = nvlink_shutdown(ndev);
+        if (err) {
+                nvgpu_err(g, "failed to shut down nvlink");
+                return err;
+        }
+
+        nvgpu_nvlink_remove(g);
+
+        return 0;
+#endif
+        return -ENODEV;
+}