linux-usb.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
To: Felipe Balbi <balbi@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>,
	linux-usb@vger.kernel.org
Cc: John Youn <John.Youn@synopsys.com>,
	stable@vger.kernel.org, Jack Mitchell <ml@embed.me.uk>
Subject: [PATCH v2] usb: dwc2: Fix SET/CLEAR_FEATURE and GET_STATUS flows
Date: Mon, 16 Dec 2019 21:14:04 +0400	[thread overview]
Message-ID: <38a93a8deedd76dbc22bb1e41b4fc998f3750c95.1576516371.git.hminas@synopsys.com> (raw)

SET/CLEAR_FEATURE for Remote Wakeup allowance not handled correctly.
GET_STATUS handling provided not correct data on DATA Stage.
Issue seen when gadget's dr_mode set to "otg" mode and connected
to MacOS.
Both are fixed and tested using USBCV Ch.9 tests.

Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
Fixes: fa389a6d7726 ("usb: dwc2: gadget: Add remote_wakeup_allowed flag")
Tested-by: Jack Mitchell <ml@embed.me.uk>
Cc: stable@vger.kernel.org
---
Changes in v2:
- Add Fixes tag
- Add Tested-by tag

Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
---
 drivers/usb/dwc2/gadget.c | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 6be10e496e10..3a6176c22371 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -1632,6 +1632,7 @@ static int dwc2_hsotg_process_req_status(struct dwc2_hsotg *hsotg,
 	struct dwc2_hsotg_ep *ep0 = hsotg->eps_out[0];
 	struct dwc2_hsotg_ep *ep;
 	__le16 reply;
+	u16 status;
 	int ret;
 
 	dev_dbg(hsotg->dev, "%s: USB_REQ_GET_STATUS\n", __func__);
@@ -1643,11 +1644,10 @@ static int dwc2_hsotg_process_req_status(struct dwc2_hsotg *hsotg,
 
 	switch (ctrl->bRequestType & USB_RECIP_MASK) {
 	case USB_RECIP_DEVICE:
-		/*
-		 * bit 0 => self powered
-		 * bit 1 => remote wakeup
-		 */
-		reply = cpu_to_le16(0);
+		status = 1 << USB_DEVICE_SELF_POWERED;
+		status |= hsotg->remote_wakeup_allowed <<
+			  USB_DEVICE_REMOTE_WAKEUP;
+		reply = cpu_to_le16(status);
 		break;
 
 	case USB_RECIP_INTERFACE:
@@ -1758,7 +1758,10 @@ static int dwc2_hsotg_process_req_feature(struct dwc2_hsotg *hsotg,
 	case USB_RECIP_DEVICE:
 		switch (wValue) {
 		case USB_DEVICE_REMOTE_WAKEUP:
-			hsotg->remote_wakeup_allowed = 1;
+			if (set)
+				hsotg->remote_wakeup_allowed = 1;
+			else
+				hsotg->remote_wakeup_allowed = 0;
 			break;
 
 		case USB_DEVICE_TEST_MODE:
@@ -1768,16 +1771,17 @@ static int dwc2_hsotg_process_req_feature(struct dwc2_hsotg *hsotg,
 				return -EINVAL;
 
 			hsotg->test_mode = wIndex >> 8;
-			ret = dwc2_hsotg_send_reply(hsotg, ep0, NULL, 0);
-			if (ret) {
-				dev_err(hsotg->dev,
-					"%s: failed to send reply\n", __func__);
-				return ret;
-			}
 			break;
 		default:
 			return -ENOENT;
 		}
+
+		ret = dwc2_hsotg_send_reply(hsotg, ep0, NULL, 0);
+		if (ret) {
+			dev_err(hsotg->dev,
+				"%s: failed to send reply\n", __func__);
+			return ret;
+		}
 		break;
 
 	case USB_RECIP_ENDPOINT:
-- 
2.11.0


             reply	other threads:[~2019-12-16 17:14 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-16 17:14 Minas Harutyunyan [this message]
2020-01-15 13:21 ` [PATCH v2] usb: dwc2: Fix SET/CLEAR_FEATURE and GET_STATUS flows Minas Harutyunyan
2020-01-15 13:27   ` Felipe Balbi
2020-01-21 10:17 Minas Harutyunyan

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=38a93a8deedd76dbc22bb1e41b4fc998f3750c95.1576516371.git.hminas@synopsys.com \
    --to=minas.harutyunyan@synopsys.com \
    --cc=John.Youn@synopsys.com \
    --cc=balbi@kernel.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=linux-usb@vger.kernel.org \
    --cc=ml@embed.me.uk \
    --cc=stable@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).