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

Allows us to be lazy elsewhere... Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2011-08-04 13:57:33 +10:00 · 2011-08-04 13:57:33 +10:00 · a8e415d3eb
commit a8e415d3eb
parent 5024c54b5c
1 changed files with 4 additions and 0 deletions
--- 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... )