From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
To: Felipe Balbi <balbi@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Thinh.Nguyen@synopsys.com, linux-usb@vger.kernel.org
Cc: John Youn <John.Youn@synopsys.com>, <stable@vger.kernel.org>
Subject: [PATCH 2/2] usb: dwc3: gadget: Fix dep->interval for fullspeed interrupt
Date: Mon, 08 Feb 2021 13:53:16 -0800 [thread overview]
Message-ID: <1263b563dedc4ab8b0fb854fba06ce4bc56bd495.1612820995.git.Thinh.Nguyen@synopsys.com> (raw)
In-Reply-To: <cover.1612820995.git.Thinh.Nguyen@synopsys.com>
The dep->interval captures the number of frames/microframes per interval
from bInterval. Fullspeed interrupt endpoint bInterval is the number of
frames per interval and not 2^(bInterval - 1). So fix it here. This
change is only for debugging purpose and should not affect the interrupt
endpoint operation.
Cc: <stable@vger.kernel.org>
Fixes: 72246da40f37 ("usb: Introduce DesignWare USB3 DRD Driver")
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
---
drivers/usb/dwc3/gadget.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index d0f8d3ec855f..aebcf8ec0716 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -615,8 +615,13 @@ static int dwc3_gadget_set_ep_config(struct dwc3_ep *dep, unsigned int action)
if (dwc->gadget->speed == USB_SPEED_FULL)
bInterval_m1 = 0;
+ if (usb_endpoint_type(desc) == USB_ENDPOINT_XFER_INT &&
+ dwc->gadget->speed == USB_SPEED_FULL)
+ dep->interval = desc->bInterval;
+ else
+ dep->interval = 1 << (desc->bInterval - 1);
+
params.param1 |= DWC3_DEPCFG_BINTERVAL_M1(bInterval_m1);
- dep->interval = 1 << (desc->bInterval - 1);
}
return dwc3_send_gadget_ep_cmd(dep, DWC3_DEPCMD_SETEPCONFIG, ¶ms);
--
2.28.0
prev parent reply other threads:[~2021-02-08 21:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-08 21:53 [PATCH 0/2] usb: dwc3: gadget: Fix fullspeed interval setting Thinh Nguyen
2021-02-08 21:53 ` [PATCH 1/2] usb: dwc3: gadget: Fix setting of DEPCFG.bInterval_m1 Thinh Nguyen
2021-02-08 21:53 ` Thinh Nguyen [this message]
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=1263b563dedc4ab8b0fb854fba06ce4bc56bd495.1612820995.git.Thinh.Nguyen@synopsys.com \
--to=thinh.nguyen@synopsys.com \
--cc=John.Youn@synopsys.com \
--cc=balbi@kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=linux-usb@vger.kernel.org \
--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).