From: Sanket Parmar <sparmar@cadence.com>
To: <peter.chen@kernel.org>
Cc: <pawell@cadence.com>, <a-govindraju@ti.com>,
<linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<kurahul@cadence.com>, <gregkh@linuxfoundation.org>,
<kishon@ti.com>, Sanket Parmar <sparmar@cadence.com>
Subject: [PATCH] usb: cdns3: Enable TDL_CHK only for OUT ep
Date: Mon, 17 May 2021 17:05:12 +0200 [thread overview]
Message-ID: <1621263912-13175-1-git-send-email-sparmar@cadence.com> (raw)
ZLP gets stuck if TDL_CHK bit is set and TDL_FROM_TRB is used
as TDL source for IN endpoints. To fix it, TDL_CHK is only
enabled for OUT endpoints.
Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver")
Reported-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Sanket Parmar <sparmar@cadence.com>
---
drivers/usb/cdns3/cdns3-gadget.c | 8 +++-----
1 files changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/cdns3/cdns3-gadget.c b/drivers/usb/cdns3/cdns3-gadget.c
index 105855a..f3c0276 100644
--- a/drivers/usb/cdns3/cdns3-gadget.c
+++ b/drivers/usb/cdns3/cdns3-gadget.c
@@ -2007,7 +2007,7 @@ static void cdns3_configure_dmult(struct cdns3_device *priv_dev,
else
mask = BIT(priv_ep->num);
- if (priv_ep->type != USB_ENDPOINT_XFER_ISOC) {
+ if (priv_ep->type != USB_ENDPOINT_XFER_ISOC && !priv_ep->dir) {
cdns3_set_register_bit(®s->tdl_from_trb, mask);
cdns3_set_register_bit(®s->tdl_beh, mask);
cdns3_set_register_bit(®s->tdl_beh2, mask);
@@ -2046,15 +2046,13 @@ int cdns3_ep_config(struct cdns3_endpoint *priv_ep, bool enable)
case USB_ENDPOINT_XFER_INT:
ep_cfg = EP_CFG_EPTYPE(USB_ENDPOINT_XFER_INT);
- if ((priv_dev->dev_ver == DEV_VER_V2 && !priv_ep->dir) ||
- priv_dev->dev_ver > DEV_VER_V2)
+ if (priv_dev->dev_ver >= DEV_VER_V2 && !priv_ep->dir)
ep_cfg |= EP_CFG_TDL_CHK;
break;
case USB_ENDPOINT_XFER_BULK:
ep_cfg = EP_CFG_EPTYPE(USB_ENDPOINT_XFER_BULK);
- if ((priv_dev->dev_ver == DEV_VER_V2 && !priv_ep->dir) ||
- priv_dev->dev_ver > DEV_VER_V2)
+ if (priv_dev->dev_ver >= DEV_VER_V2 && !priv_ep->dir)
ep_cfg |= EP_CFG_TDL_CHK;
break;
default:
--
1.7.1
next reply other threads:[~2021-05-17 15:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-17 15:05 Sanket Parmar [this message]
2021-05-22 10:09 ` [PATCH] usb: cdns3: Enable TDL_CHK only for OUT ep Peter Chen
2021-05-24 5:39 ` Sanket Parmar
2021-05-26 15:00 ` Aswath Govindraju
2021-05-27 1:23 ` Peter Chen
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=1621263912-13175-1-git-send-email-sparmar@cadence.com \
--to=sparmar@cadence.com \
--cc=a-govindraju@ti.com \
--cc=gregkh@linuxfoundation.org \
--cc=kishon@ti.com \
--cc=kurahul@cadence.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=pawell@cadence.com \
--cc=peter.chen@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).