Patch "usb: gadget: udc: renesas_usb3: fix for no-data control transfer" has been added to the 4.13-stable tree

Patch "usb: gadget: udc: renesas_usb3: fix for no-data control transfer" has been added to the 4.13-stable tree

[gregkh]

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 the 4.13-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     usb-gadget-udc-renesas_usb3-fix-for-no-data-control-transfer.patch
and it can be found in the queue-4.13 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 4dcf4bab4a409e81284b8202137e4a85b96b34de Mon Sep 17 00:00:00 2001
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Date: Mon, 25 Sep 2017 17:01:23 +0900
Subject: usb: gadget: udc: renesas_usb3: fix for no-data control transfer

From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

commit 4dcf4bab4a409e81284b8202137e4a85b96b34de upstream.

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.

Fixes: 746bfe63bba3 ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

--- a/drivers/usb/gadget/udc/renesas_usb3.c
+++ b/drivers/usb/gadget/udc/renesas_usb3.c
@@ -1144,7 +1144,8 @@ static void usb3_start_pipe0(struct rene
 		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);


Patches currently in stable-queue which might be from yoshihiro.shimoda.uh@renesas.com are

queue-4.13/usb-gadget-udc-renesas_usb3-fix-return-value-of-usb3_write_pipe.patch
queue-4.13/usb-gadget-udc-renesas_usb3-fix-pn_rammap.pn_mpkt-value.patch
queue-4.13/usb-renesas_usbhs-fix-usbhsf_fifo_clear-for-rx-direction.patch
queue-4.13/usb-gadget-udc-renesas_usb3-fix-for-no-data-control-transfer.patch
queue-4.13/usb-renesas_usbhs-fix-the-bclr-setting-condition-for-non-dcp-pipe.patch