tmiofb: missing NULL pointer checks

Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=44471
Reported-by: <rucsoftsec@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/video/tmiofb.c b/drivers/video/tmiofb.c
index 8e4a446b5ed1..b244f060f151 100644
--- a/drivers/video/tmiofb.c
+++ b/drivers/video/tmiofb.c
@@ -694,6 +694,10 @@ static int __devinit tmiofb_probe(struct platform_device *dev)
                 dev_err(&dev->dev, "NULL platform data!\n");
                 return -EINVAL;
         }
+        if (ccr == NULL || lcr == NULL || vram == NULL || irq < 0) {
+                dev_err(&dev->dev, "missing resources\n");
+                return -EINVAL;
+        }
 
         info = framebuffer_alloc(sizeof(struct tmiofb_par), &dev->dev);