From: sashiko-bot@kernel.org
To: "Fabrice Gasnier" <fabrice.gasnier@foss.st.com>
Cc: linux-usb@vger.kernel.org
Subject: Re: [PATCH] usb: dwc2: wa for isoc packet tx fifo flush at periodic frame boundary
Date: Wed, 14 Oct 2026 09:52:41 +0000 [thread overview]
Message-ID: <sashiko-outbox-171098@kernel.org> (raw)
In-Reply-To: <20261014-dwc2-fix-wa-isoc-v1-1-f261ce0852bd@foss.st.com>
> If an isochronous packet is still being transmitted, when the end of
> periodic frame interval elapses, using dma desc on dwc2 controller,
> the device wrongly flushes the pending packets from the tx fifo.
> This can lead to a huge packet is sent on the bus, leading to the host
> finally reset the bus, and re-enumerate it.
>
> Workaround it by tuning the periodic frame interval limit from 80% to 95%,
> on the affected cores (2.70a to 4.00a). It makes the issue very unlikely
> to occur.
>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261014-dwc2-fix-wa-isoc-v1-1-f261ce0852bd@foss.st.com?part=1
prev parent reply other threads:[~2026-10-14 9:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-14 9:46 [PATCH] usb: dwc2: wa for isoc packet tx fifo flush at periodic frame boundary Fabrice Gasnier
2026-10-14 9:52 ` sashiko-bot [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=sashiko-outbox-171098@kernel.org \
--to=sashiko-bot@kernel.org \
--cc=fabrice.gasnier@foss.st.com \
--cc=linux-usb@vger.kernel.org \
--cc=sashiko-reviews@lists.linux.dev \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.