drm/pci: add missing variable initialization

Fixed build warning as below:

drivers/gpu/drm/drm_pci.c: In function 'drm_pcie_get_speed_cap_mask':
drivers/gpu/drm/drm_pci.c:496:9: warning: 'lnkcap' may be used uninitialized in this function [-Wuninitialized]
drivers/gpu/drm/drm_pci.c:497:10: warning: 'lnkcap2' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index ba33144257e5..754bc96e10c7 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -470,7 +470,7 @@ int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *mask)
 {
         struct pci_dev *root;
         int pos;
-        u32 lnkcap, lnkcap2;
+        u32 lnkcap = 0, lnkcap2 = 0;
 
         *mask = 0;
         if (!dev->pdev)