patch "usb: gadget: udc: renesas_usb3: fix for no-data control transfer" added to usb-linus

This is a note to let you know that I've just added the patch titled

usb: gadget: udc: renesas_usb3: fix for no-data control transfer

to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From: Yoshihiro Shimoda <[email protected]>
Date: Mon, 25 Sep 2017 17:01:23 +0900
Subject: usb: gadget: udc: renesas_usb3: fix for no-data control transfer

When bRequestType & USB_DIR_IN is false and req.length is 0 in control transfer, since it means non-data, this driver should not set the mode as control write. So, this patch fixes it.

---
 drivers/usb/gadget/udc/renesas_usb3.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

index df37c1e6e9d5..555c105e82df 100644
@@ -1150,7 +1150,8 @@ static void usb3_start_pipe0(struct renesas_usb3_ep *usb3_ep,
 		usb3_set_p0_con_for_ctrl_read_data(usb3);
 	} else {
 		usb3_clear_bit(usb3, P0_MOD_DIR, USB3_P0_MOD);
-		usb3_set_p0_con_for_ctrl_write_data(usb3);
+		if (usb3_req->req.length)
+			usb3_set_p0_con_for_ctrl_write_data(usb3);
 	}
 
 	usb3_p0_xfer(usb3_ep, usb3_req);

2.14.1