From a52562b2be7ea728a176ae94d8a18d9ae0a4423a Mon Sep 17 00:00:00 2001 From: hathach Date: Wed, 12 Aug 2026 22:37:06 +0700 Subject: [PATCH] usbd: clear the queued-setup counter on bus reset A SETUP counted before a bus reset must not be carried across it: the consumer would either skip a post-reset SETUP (count drained by the stale entry) or, if the count leaked high for any other reason, skip them all. usbd_reset() now zeroes the counter; the consumer already guards on zero, and any pre-reset SETUP still in the queue is stale by definition and correctly discarded. --- src/device/usbd.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/device/usbd.c b/src/device/usbd.c index b77b766dd..79802e70f 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -642,6 +642,8 @@ static void configuration_reset(uint8_t rhport) { static void usbd_reset(uint8_t rhport) { configuration_reset(rhport); + // discard any pre-reset SETUP still counted: a stale count skips post-reset SETUPs + _usbd_queued_setup = 0; } bool tud_task_event_ready(void) {