[U-Boot] [RFC PATCH] usb: dfu: make nand upload working

[Bo Shen]

If won't pass value to dfu->r_left, it always 0, make no transfer,
the dfu-util on host side report failed. So, before starting transfer,
pass the value, then nand uploading can work.

Signed-off-by: Bo Shen <voice.shen at atmel.com>

---
 drivers/dfu/dfu.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index 56b21c7..3c3ad1b 100644
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -274,6 +274,7 @@ int dfu_read(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num)
 		if (dfu->i_buf_start == NULL)
 			return -ENOMEM;
 
+		dfu->r_left = dfu->data.nand.size;
 		ret = dfu->read_medium(dfu, 0, dfu->i_buf_start, &dfu->r_left);
 		if (ret != 0) {
 			debug("%s: failed to get r_left\n", __func__);
-- 
1.7.9.5