diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/portable/mentor/musb/dcd_musb.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/portable/mentor/musb/dcd_musb.c b/src/portable/mentor/musb/dcd_musb.c index 5c2b80cf6..0a2df3e71 100644 --- a/src/portable/mentor/musb/dcd_musb.c +++ b/src/portable/mentor/musb/dcd_musb.c @@ -566,12 +566,13 @@ static void process_ep0_isr(uint8_t rhport) { if (count0) { TU_ASSERT(pipe0->buf, ); tu_hwfifo_read(&musb_regs->fifo[0], pipe0->buf, count0, NULL); - pipe0->remain_wlength -= count0; + pipe0->remain_wlength -= tu_min16(count0, pipe0->remain_wlength); // clamp: host may overrun } // RXRDY stays set until the next edpt0_xfer arm acks it (NAK flow control): // edpt0_xfer(DATA OUT) for a mid-stream packet, edpt0_xfer(STATUS IN) for the last. pipe0->rxrdy_consumed = true; - if (pipe0->remain_wlength == 0) { + // Last packet: wLength received, or a short packet (host's end-of-data). + if (pipe0->remain_wlength == 0 || count0 < CFG_TUD_ENDPOINT0_SIZE) { pipe0->state = PIPE0_STATE_STATUS_IN; } dcd_event_xfer_complete(rhport, TU_EP0_OUT, count0, XFER_RESULT_SUCCESS, true); |