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-rw-r--r--class/dfu/usbd_dfu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/class/dfu/usbd_dfu.c b/class/dfu/usbd_dfu.c
index 96782e08..b7cdec9c 100644
--- a/class/dfu/usbd_dfu.c
+++ b/class/dfu/usbd_dfu.c
@@ -96,7 +96,7 @@ static int dfu_class_interface_request_handler(uint8_t busid, struct usb_setup_p
case DFU_REQUEST_UPLOAD:
usbd_dfu_begin_load();
- uint16_t actual_length;
+ uint16_t actual_length = 0;
if (usbd_dfu_read(setup->wValue, *data, setup->wLength, &actual_length) < 0) {
g_usbd_dfu.dfu_state = DFU_STATE_DFU_ERROR;
return -1;