[U-Boot] [PATCH] usb:gadget:f_thor: fix write to filesystem by add dfu_flush()

[Przemyslaw Marczak]

Since dfu read/write operations needs to be flushed manually,
writing to filesystem on MMC by thor was broken. MMC raw write
actually is working fine because current dfu_flush() function
writes filesystem only. This commit adds dfu_flush() to f_thor
and now filesystem write is working.

This change was tested on Trats2 board.

Signed-off-by: Przemyslaw Marczak <p.marczak at samsung.com>
Cc: Lukasz Majewski <l.majewski at samsung.com>
Cc: Marek Vasut <marex at denx.de>
Cc: Heiko Schocher <hs at denx.de>
Cc: Tom Rini <trini at ti.com>
---
 drivers/usb/gadget/f_thor.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/gadget/f_thor.c b/drivers/usb/gadget/f_thor.c
index f5c0224..ba47945 100644
--- a/drivers/usb/gadget/f_thor.c
+++ b/drivers/usb/gadget/f_thor.c
@@ -204,14 +204,14 @@ static long long int download_head(unsigned long long total,
 
 static int download_tail(long long int left, int cnt)
 {
+	struct dfu_entity *dfu_entity = dfu_get_entity(alt_setting_num);
 	void *transfer_buffer = dfu_get_buf();
 	int ret;
 
 	debug("%s: left: %llu cnt: %d\n", __func__, left, cnt);
 
 	if (left) {
-		ret = dfu_write(dfu_get_entity(alt_setting_num),
-				transfer_buffer, left, cnt++);
+		ret = dfu_write(dfu_entity, transfer_buffer, left, cnt++);
 		if (ret) {
 			error("DFU write failed [%d]: left: %llu", ret, left);
 			return ret;
@@ -225,11 +225,16 @@ static int download_tail(long long int left, int cnt)
 	 * This also frees memory malloc'ed by dfu_get_buf(), so no explicit
 	 * need fo call dfu_free_buf() is needed.
 	 */
-	ret = dfu_write(dfu_get_entity(alt_setting_num),
-			transfer_buffer, 0, cnt);
+	ret = dfu_write(dfu_entity, transfer_buffer, 0, cnt);
 	if (ret)
 		error("DFU write failed [%d] cnt: %d", ret, cnt);
 
+	ret = dfu_flush(dfu_entity, transfer_buffer, 0, cnt);
+	if (ret) {
+		error("DFU flush failed!");
+		return ret;
+	}
+
 	return ret;
 }
 
-- 
1.8.3.2