From: Ferry Toth <fntoth@gmail.com>
To: Lukas Wunner <lukas@wunner.de>
Cc: Steve Glendinning <steve.glendinning@shawell.net>,
UNGLinuxDriver@microchip.com, Oliver Neukum <oneukum@suse.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
netdev@vger.kernel.org, linux-usb@vger.kernel.org,
Andre Edich <andre.edich@microchip.com>,
Oleksij Rempel <o.rempel@pengutronix.de>,
Martyn Welch <martyn.welch@collabora.com>,
Gabriel Hojda <ghojda@yo2urs.ro>,
Christoph Fritz <chf.fritz@googlemail.com>,
Lino Sanfilippo <LinoSanfilippo@gmx.de>,
Philipp Rosenberger <p.rosenberger@kunbus.com>,
Heiner Kallweit <hkallweit1@gmail.com>,
Andrew Lunn <andrew@lunn.ch>,
Russell King <linux@armlinux.org.uk>
Subject: Re: [PATCH net-next 0/7] Polling be gone on LAN95xx
Date: Tue, 3 May 2022 16:26:58 +0200 [thread overview]
Message-ID: <2a436486-a54d-a9b3-d839-232a38653af3@gmail.com> (raw)
In-Reply-To: <20220503082612.GA21515@wunner.de>
Hi
On 03-05-2022 10:26, Lukas Wunner wrote:
> On Mon, May 02, 2022 at 10:33:06PM +0200, Ferry Toth wrote:
>> Op 27-04-2022 om 07:48 schreef Lukas Wunner:
>>> Do away with link status polling on LAN95XX USB Ethernet
>>> and rely on interrupts instead, thereby reducing bus traffic,
>>> CPU overhead and improving interface bringup latency.
>> Tested-by: Ferry Toth <fntoth@gmail.com> (Intel Edison-Arduino)
> Thank you!
>
>> While testing I noted another problem. I have "DMA-API: debugging enabled by
>> kernel config" and this (I guess) shows me before and after the patches:
>>
>> ------------[ cut here ]------------
>> DMA-API: xhci-hcd xhci-hcd.1.auto: cacheline tracking EEXIST, overlapping
>> mappings aren't supported
> That is under investigation here:
> https://bugzilla.kernel.org/show_bug.cgi?id=215740
>
> It's apparently a long-standing bug in the USB core which was exposed
> by a new WARN() check introduced in 5.14.
I'm not sure this is correct. The issue happens for me only when
connecting the SMSC9414.
Other usb devices I have (memory sticks, wifi, bluetooth) do not trigger
this.
I think we need to consider it might be a valid warning. It seems to be
originating from the same "Workqueue: usb_hub_wq hub_event" though.
> Thanks,
>
> Lukas
next prev parent reply other threads:[~2022-05-03 14:38 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-27 5:48 [PATCH net-next 0/7] Polling be gone on LAN95xx Lukas Wunner
2022-04-27 5:48 ` [PATCH net-next 1/7] usbnet: Run unregister_netdev() before unbind() again Lukas Wunner
2022-04-27 7:44 ` Oliver Neukum
2022-04-27 7:45 ` Oliver Neukum
2022-04-27 5:48 ` [PATCH net-next 2/7] usbnet: smsc95xx: Don't clear read-only PHY interrupt Lukas Wunner
2022-04-27 5:48 ` [PATCH net-next 3/7] usbnet: smsc95xx: Don't reset PHY behind PHY driver's back Lukas Wunner
2022-04-27 5:48 ` [PATCH net-next 4/7] usbnet: smsc95xx: Avoid link settings race on interrupt reception Lukas Wunner
2022-04-27 11:50 ` Andrew Lunn
2022-04-27 5:48 ` [PATCH net-next 5/7] usbnet: smsc95xx: Forward PHY interrupts to PHY driver to avoid polling Lukas Wunner
2022-04-27 12:03 ` Andrew Lunn
2022-04-27 12:26 ` Andrew Lunn
2022-04-27 5:48 ` [PATCH net-next 6/7] net: phy: smsc: Cache interrupt mask Lukas Wunner
2022-04-27 12:14 ` Andrew Lunn
2022-04-27 12:51 ` Lukas Wunner
2022-04-27 5:48 ` [PATCH net-next 7/7] net: phy: smsc: Cope with hot-removal in interrupt handler Lukas Wunner
2022-04-27 7:46 ` Oliver Neukum
2022-04-27 12:37 ` [PATCH net-next 0/7] Polling be gone on LAN95xx Oleksij Rempel
2022-04-28 12:19 ` Lukas Wunner
2022-05-02 20:33 ` Ferry Toth
2022-05-03 8:26 ` Lukas Wunner
2022-05-03 14:26 ` Ferry Toth [this message]
2022-05-04 8:15 ` Lukas Wunner
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=2a436486-a54d-a9b3-d839-232a38653af3@gmail.com \
--to=fntoth@gmail.com \
--cc=LinoSanfilippo@gmx.de \
--cc=UNGLinuxDriver@microchip.com \
--cc=andre.edich@microchip.com \
--cc=andrew@lunn.ch \
--cc=chf.fritz@googlemail.com \
--cc=davem@davemloft.net \
--cc=ghojda@yo2urs.ro \
--cc=hkallweit1@gmail.com \
--cc=kuba@kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=lukas@wunner.de \
--cc=martyn.welch@collabora.com \
--cc=netdev@vger.kernel.org \
--cc=o.rempel@pengutronix.de \
--cc=oneukum@suse.com \
--cc=p.rosenberger@kunbus.com \
--cc=pabeni@redhat.com \
--cc=steve.glendinning@shawell.net \
/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).