diff options
| -rw-r--r-- | src/rp2040/usbserial.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/rp2040/usbserial.c b/src/rp2040/usbserial.c index 3cd2e9d8..030f4752 100644 --- a/src/rp2040/usbserial.c +++ b/src/rp2040/usbserial.c @@ -96,6 +96,7 @@ usb_read_ep0_setup(void *data, uint_fast8_t max_len) | USB_BUF_CTRL_AVAIL | DPBUF_SIZE); usb_hw->sie_status = USB_SIE_STATUS_SETUP_REC_BITS; memcpy(data, (void*)usb_dpram->setup_packet, max_len); + barrier(); if (usb_hw->intr & USB_INTR_SETUP_REQ_BITS) { // Raced with next setup packet usb_notify_ep0(); |