usb: gadget: f_dfu: write req->actual bytes

If last packet is short, we shouldn't write req->length bytes to
non-volatile media, we should write only what's available to us, which
is held in req->actual.

Signed-off-by: Felipe Balbi <[email protected]>
Signed-off-by: Andy Shevchenko <[email protected]>

diff --git a/drivers/usb/gadget/f_dfu.c b/drivers/usb/gadget/f_dfu.c
index 26b3e6e8b8c4b051719696f9a7da0462aba388de..81929d3e0daf564f45d912c94e827befe1d60fdc 100644 (file)
--- a/drivers/usb/gadget/f_dfu.c
+++ b/drivers/usb/gadget/f_dfu.c
@@ -159,7 +159,7 @@ static void dnload_request_complete(struct usb_ep *ep, struct usb_request *req)
        int ret;
 
        ret = dfu_write(dfu_get_entity(f_dfu->altsetting), req->buf,
-                       req->length, f_dfu->blk_seq_num);
+                       req->actual, f_dfu->blk_seq_num);
        if (ret) {
                f_dfu->dfu_status = DFU_STATUS_errUNKNOWN;
                f_dfu->dfu_state = DFU_STATE_dfuERROR;