From: Ben Skeggs <bskeggs@redhat.com>
Date: Thu, 4 Aug 2011 03:57:33 +0000 (+1000)
Subject: drm/nouveau/bios: check for null script pointers in parser
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=a8e415d3eb1bed184d73e22c62cd1f992bd33d63;p=deliverable%2Flinux.git

drm/nouveau/bios: check for null script pointers in parser

Allows us to be lazy elsewhere...

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---

diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index 58d8c85b85d1..528fb6087814 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -3771,6 +3771,10 @@ parse_init_table(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
 	int count = 0, i, ret;
 	uint8_t id;
 
+	/* catch NULL script pointers */
+	if (offset == 0)
+		return 0;
+
 	/*
 	 * Loop until INIT_DONE causes us to break out of the loop
 	 * (or until offset > bios length just in case... )