viafb: NULL dereference on allocation failure in query_edid()

We should handle the allocation here, if only to keep the static
checkers happy.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/video/via/via_aux_edid.c b/drivers/video/via/via_aux_edid.c
index 03f7a41c8a3f..754d4509033f 100644
--- a/drivers/video/via/via_aux_edid.c
+++ b/drivers/video/via/via_aux_edid.c
@@ -36,10 +36,13 @@ static void query_edid(struct via_aux_drv *drv)
         unsigned char edid[EDID_LENGTH];
         bool valid = false;
 
-        if (spec)
+        if (spec) {
                 fb_destroy_modedb(spec->modedb);
-        else
+        } else {
                 spec = kmalloc(sizeof(*spec), GFP_KERNEL);
+                if (!spec)
+                        return;
+        }
 
         spec->version = spec->revision = 0;
         if (via_aux_read(drv, 0x00, edid, EDID_LENGTH)) {