fix(core): fix emulator usb polling

[no changelog]
trezor · Feb 6, 2025 · 97363e2 · 97363e2
1 parent afd8294
commit 97363e2
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/core/embed/io/usb/unix/usb.c b/core/embed/io/usb/unix/usb.c
@@ -141,6 +141,10 @@ secbool usb_vcp_add(const usb_vcp_info_t *info) {
 }
 
 static secbool usb_emulated_poll_read(uint8_t iface_num) {
+  if (usb_ifaces[iface_num].msg_len > 0) {
+    return sectrue;
+  }
+
   struct pollfd fds[] = {
       {usb_ifaces[iface_num].sock, POLLIN, 0},
   };