[PATCH][drm-next] drm compat: ensure mode in drm_agp_info is being copied

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

A recent compat change removed the copying of i32.mode from info.mode.
Add it back in to fix this removal as we currently are leaking information
from the stack.

Detected by CoverityScan, CID#1449374 ("Unitialized scalar variable")

Fixes: 2337f2272ee1 ("compat_drm: switch AGP compat ioctls to drm_ioctl_kernel()")
Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 drivers/gpu/drm/drm_ioc32.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index 340eccfe35a1..94acf5109235 100644
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -648,6 +648,7 @@ static int compat_drm_agp_info(struct file *file, unsigned int cmd,
 
 	i32.agp_version_major = info.agp_version_major;
 	i32.agp_version_minor = info.agp_version_minor;
+	i32.mode = info.mode;
 	i32.aperture_base = info.aperture_base;
 	i32.aperture_size = info.aperture_size;
 	i32.memory_allowed = info.memory_allowed;
-- 
2.11.0