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dcd/ch32hs: drop OUT packet whose data toggle doesn't match

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Signed-off-by: HiFiPhile <admin@hifiphile.com>
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HiFiPhile
2026-06-23 10:07:24 +02:00
parent 030bb962ae
commit ca89edf2ef
1 changed files with 3 additions and 1 deletions
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4
src/portable/wch/dcd_ch32_usbhs.c
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@ -418,7 +418,9 @@ void dcd_int_handler(uint8_t rhport) {
if (token == USBHS_TOKEN_PID_SOF) {
uint32_t frame_count = USBHSD->FRAME_NO & USBHS_FRAME_NO_NUM_MASK;
dcd_event_sof(rhport, frame_count, true);
} else if (token == USBHS_TOKEN_PID_OUT) {
// Drop an OUT packet whose data toggle doesn't match what we expect -- a host retransmit
// after a lost ACK, or a host that doesn't alternate DATA0/DATA1.
} else if (token == USBHS_TOKEN_PID_OUT && (int_status & USBHS_DEV_UIS_TOG_OK)) {
update_out(rhport, ep_num, len);
} else if (token == USBHS_TOKEN_PID_IN) {
update_in(rhport, ep_num, false);