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drm/nouveau/bios/pll: prevent oops when limits table can't be parsed

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2016-04-19 10:07:04 +10:00
parent d07a97e939
commit 2781c928b1
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c
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@ -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;