diff options
| -rw-r--r-- | src/common/tusb_fifo.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/src/common/tusb_fifo.c b/src/common/tusb_fifo.c index 1e0c6b5e7..f41cf9f6c 100644 --- a/src/common/tusb_fifo.c +++ b/src/common/tusb_fifo.c @@ -81,9 +81,8 @@ bool tu_fifo_config(tu_fifo_t *f, void* buffer, uint16_t depth, uint16_t item_si static inline uint16_t _ff_mod(uint16_t idx, uint16_t depth) { -// return idx % depth; - idx -= depth & -(idx >= depth); - return idx -= depth & -(idx >= depth); + while ( idx >= depth) idx -= depth; + return idx; } // send one item to FIFO WITHOUT updating write pointer |