diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_bios.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index f491e363e84..054dbe7fdf9 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -643,13 +643,15 @@ static u8 *goto_next_sequence(u8 *data, int *size) * skip by this element payload size * skip elem id, command flag and data type */ - if ((tmp = tmp - 5) < 0) + tmp -= 5; + if (tmp < 0) return NULL; data += 3; len = *((u16 *)data); - if ((tmp = tmp - len) < 0) + tmp -= len; + if (tmp < 0) return NULL; /* skip by len */ @@ -657,13 +659,15 @@ static u8 *goto_next_sequence(u8 *data, int *size) break; case MIPI_SEQ_ELEM_DELAY: /* skip by elem id, and delay is 4 bytes */ - if ((tmp = tmp - 5) < 0) + tmp -= 5; + if (tmp < 0) return NULL; data += 5; break; case MIPI_SEQ_ELEM_GPIO: - if ((tmp = tmp - 3) < 0) + tmp -= 3; + if (tmp < 0) return NULL; data += 3; |