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From: Ray Chi <raychi@google.com>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: mathias.nyman@linux.intel.com,
	Alan Stern <stern@rowland.harvard.edu>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	Albert Wang <albertccwang@google.com>,
	Badhri Jagan Sridharan <badhri@google.com>,
	Puma Hsu <pumahsu@google.com>
Subject: Re: [PATCH] usb: core: stop USB enumeration if too many retries
Date: Fri, 2 Sep 2022 17:28:24 +0800	[thread overview]
Message-ID: <CAPBYUsA1oARNuGus5uzxZ7Co+gJrm2V_axCPsyZHhp85cndaAg@mail.gmail.com> (raw)
In-Reply-To: <Yw4GH4U5ULV3VFSY@kroah.com>

On Tue, Aug 30, 2022 at 8:44 PM Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Fri, Aug 26, 2022 at 03:58:39PM +0800, Ray Chi wrote:
> > If a broken accessory connected to a USB host, usbcore might
> > keep doing enumeration retries and it will take a long time to
> > cause system unstable.
> >
> > This patch provides a quirk to specific USB ports of the hub to
> > stop USB enumeration if needed.
>
> Where does it ever allow the port to handle new devices in the future if
> the device is removed and then a new one is added back?  Or is the port
> just now dead for forever?
>

I modified the patch according to Alan's suggestion, so the port will
be working again
after clearing the quirk with the v2 patch.

> thanks,
>
> greg k-h

Thanks,
Ray

      reply	other threads:[~2022-09-02  9:29 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-26  7:58 [PATCH] usb: core: stop USB enumeration if too many retries Ray Chi
2022-08-26 14:55 ` Alan Stern
2022-08-26 17:53   ` Ray Chi
2022-08-26 19:02     ` Alan Stern
2022-08-30 12:44 ` Greg KH
2022-09-02  9:28   ` Ray Chi [this message]

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