Merge pull request #1597 from kasjer/kasjer/dfu-coexistence

dfu: Allow DFU coexistence with other interfaces (BTH, RNDIS, future one)
hathach · Aug 10, 2022 · 8a28e7c · 8a28e7c
2 parents 7ade0d0 + c7469ce
commit 8a28e7c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/class/dfu/dfu_device.c b/src/class/dfu/dfu_device.c
@@ -167,6 +167,8 @@ uint16_t dfu_moded_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc,
   uint8_t alt_count = 0;
 
   uint16_t drv_len = 0;
+  TU_VERIFY(itf_desc->bInterfaceSubClass == TUD_DFU_APP_SUBCLASS && itf_desc->bInterfaceProtocol == DFU_PROTOCOL_DFU, 0);
+
   while(itf_desc->bInterfaceSubClass == TUD_DFU_APP_SUBCLASS && itf_desc->bInterfaceProtocol == DFU_PROTOCOL_DFU)
   {
     TU_ASSERT(max_len > drv_len, 0);