From 2781c928b1b3d5d56d72b4955e19c0d963e2c22e Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 19 Apr 2016 10:07:04 +1000 Subject: [PATCH] drm/nouveau/bios/pll: prevent oops when limits table can't be parsed Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c index 125ec2e..4cd3d65 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c @@ -156,7 +156,7 @@ pll_map_reg(struct nvkm_bios *bios, u32 reg, u32 *type, u8 *ver, u8 *len) } map = pll_map(bios); - while (map->reg) { + while (map && map->reg) { if (map->reg == reg && *ver >= 0x20) { u16 addr = (data += hdr); *type = map->type; @@ -198,7 +198,7 @@ pll_map_type(struct nvkm_bios *bios, u8 type, u32 *reg, u8 *ver, u8 *len) } map = pll_map(bios); - while (map->reg) { + while (map && map->reg) { if (map->type == type && *ver >= 0x20) { u16 addr = (data += hdr); *reg = map->reg; -- 2.7.4