diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h index 5e7c698f9bfb..4a4e98068893 100644 --- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h @@ -5993,6 +5993,9 @@ static inline uint32_t dmub_rb_num_free(struct dmub_rb *rb) else data_count = rb->capacity - (rb->rptr - rb->wrpt); + /* +1 because 1 entry is always unusable */ + data_count += DMUB_RB_CMD_SIZE; + return (rb->capacity - data_count) / DMUB_RB_CMD_SIZE; } @@ -6012,6 +6015,7 @@ static inline bool dmub_rb_full(struct dmub_rb *rb) else data_count = rb->capacity - (rb->rptr - rb->wrpt); + /* -1 because 1 entry is always unusable */ return (data_count == (rb->capacity - DMUB_RB_CMD_SIZE)); } |