diff options
| author | Gavin Li <[email protected]> | 2020-08-20 09:59:23 -0700 |
|---|---|---|
| committer | GitHub <[email protected]> | 2020-08-20 09:59:23 -0700 |
| commit | 72183c7bb44ff117d9abac7b6e9c373c0945fb0b (patch) | |
| tree | c9273dbc08995cbf51161e2c2c328b273727b1a3 /src/class/cdc | |
| parent | 15b063beb287785b2bf84d00361000036afaba2c (diff) | |
Slight optimization for cdc tx refill
Diffstat (limited to 'src/class/cdc')
| -rw-r--r-- | src/class/cdc/cdc_device.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/src/class/cdc/cdc_device.c b/src/class/cdc/cdc_device.c index da9e94133..513fe203b 100644 --- a/src/class/cdc/cdc_device.c +++ b/src/class/cdc/cdc_device.c @@ -416,12 +416,10 @@ bool cdcd_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_ // Though maybe the baudrate is not really important !!! if ( ep_addr == p_cdc->ep_in ) { - uint32_t flushed = tud_cdc_n_write_flush(itf); - // invoke transmit callback to possibly refill tx fifo if ( tud_cdc_tx_complete_cb ) tud_cdc_tx_complete_cb(itf); - if ( 0 == flushed && tu_fifo_empty(&p_cdc->tx_ff) ) + if ( 0 == tud_cdc_n_write_flush(itf) ) { // There is no data left, a ZLP should be sent if // xferred_bytes is multiple of EP size and not zero |