diff options
Diffstat (limited to 'components/drivers/include')
| -rw-r--r-- | components/drivers/include/ipc/ringbuffer.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/components/drivers/include/ipc/ringbuffer.h b/components/drivers/include/ipc/ringbuffer.h index 117c97e775..97abf37097 100644 --- a/components/drivers/include/ipc/ringbuffer.h +++ b/components/drivers/include/ipc/ringbuffer.h @@ -95,7 +95,7 @@ rt_inline rt_uint16_t rt_ringbuffer_get_size(struct rt_ringbuffer *rb) } /** return the size of empty space in rb */ -#define rt_ringbuffer_space_len(rb) ((rb)->buffer_size - rt_ringbuffer_data_len(rb)) +#define rt_ringbuffer_space_len(rb) ((rb)->buffer_size - (rt_int16_t)rt_ringbuffer_data_len(rb)) #ifdef __cplusplus |