3 files changed, 10 insertions, 2 deletions
diff --git a/src/host/hcd.h b/src/host/hcd.h
index cbfffb349..90bfd79db 100644
--- a/src/host/hcd.h
+++ b/src/host/hcd.h
@@ -172,6 +172,7 @@ bool hcd_edpt_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_endpoint_t const
 bool hcd_edpt_xfer(uint8_t rhport, uint8_t dev_addr, uint8_t ep_addr, uint8_t * buffer, uint16_t buflen);
 
 // Abort a queued transfer. Note: it can only abort transfer that has not been started
+// Return true if a queued transfer is aborted, false if there is no transfer to abort
 bool hcd_edpt_abort_xfer(uint8_t rhport, uint8_t dev_addr, uint8_t ep_addr);
 
 // Submit a special transfer to send 8-byte Setup Packet, when complete hcd_event_xfer_complete() must be invoked
diff --git a/src/host/usbh.c b/src/host/usbh.c
index bbf333d5f..15c48be47 100644
--- a/src/host/usbh.c
+++ b/src/host/usbh.c
@@ -718,9 +718,15 @@ bool tuh_edpt_abort_xfer(uint8_t daddr, uint8_t ep_addr) {
   uint8_t const dir   = tu_edpt_dir(ep_addr);
 
   // skip if not busy
-  if (!dev->ep_status[epnum][dir].busy) return true;
+  TU_VERIFY(dev->ep_status[epnum][dir].busy);
 
-  return hcd_edpt_abort_xfer(dev->rhport, daddr, ep_addr);
+  bool const ret = hcd_edpt_abort_xfer(dev->rhport, daddr, ep_addr);
+  if (ret) {
+    // mark as ready if transfer is aborted
+    dev->ep_status[epnum][dir].busy = false;
+  }
+
+  return ret;
 }
 
 //--------------------------------------------------------------------+
diff --git a/src/host/usbh.h b/src/host/usbh.h
index d765f6744..0d56f40c9 100644
--- a/src/host/usbh.h
+++ b/src/host/usbh.h
@@ -176,6 +176,7 @@ bool tuh_edpt_xfer(tuh_xfer_t* xfer);
 bool tuh_edpt_open(uint8_t daddr, tusb_desc_endpoint_t const * desc_ep);
 
 // Abort a queued transfer. Note: it can only abort transfer that has not been started
+// Return true if a queued transfer is aborted, false if there is no transfer to abort
 bool tuh_edpt_abort_xfer(uint8_t daddr, uint8_t ep_addr);
 
 // Set Configuration (control transfer)