[PATCH] drm: drm_stub: Fixing return value if driver master_set call failed

[Benjamin GAIGNARD]

From: Benjamin Gaignard <benjamin.gaign...@linaro.org>

When dev->driver->master_set() failed ioctl call return 0
but the caller is not the DRM-Master because file_priv->is_master = 0.
Fix that by returning to ioctl caller the driver master_set error code.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard at linaro.org>
---
 drivers/gpu/drm/drm_stub.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 16f3ec5..a2f8c92 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -203,7 +203,7 @@ EXPORT_SYMBOL(drm_master_put);
 int drm_setmaster_ioctl(struct drm_device *dev, void *data,
                        struct drm_file *file_priv)
 {
-       int ret;
+       int ret = 0;

        if (file_priv->is_master)
                return 0;
@@ -229,7 +229,7 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data,
        }
        mutex_unlock(&dev->struct_mutex);

-       return 0;
+       return ret;
 }

 int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
-- 
1.7.9.5