diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c index 125ec2ed6c2e..91a7dc56e406 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pll.c @@ -81,9 +81,11 @@ static u16 pll_limits_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) { struct bit_entry bit_C; + u16 data = 0x0000; - if (!bit_entry(bios, 'C', &bit_C) && bit_C.length >= 10) { - u16 data = nvbios_rd16(bios, bit_C.offset + 8); + if (!bit_entry(bios, 'C', &bit_C)) { + if (bit_C.version == 1 && bit_C.length >= 10) + data = nvbios_rd16(bios, bit_C.offset + 8); if (data) { *ver = nvbios_rd08(bios, data + 0); *hdr = nvbios_rd08(bios, data + 1); @@ -94,7 +96,7 @@ pll_limits_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) } if (bmp_version(bios) >= 0x0524) { - u16 data = nvbios_rd16(bios, bios->bmp_offset + 142); + data = nvbios_rd16(bios, bios->bmp_offset + 142); if (data) { *ver = nvbios_rd08(bios, data + 0); *hdr = 1; @@ -105,7 +107,7 @@ pll_limits_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) } *ver = 0x00; - return 0x0000; + return data; } static struct pll_mapping * @@ -156,7 +158,7 @@ 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 +200,7 @@ 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; |