linux-kernel - Re: [PATCH v2 0/3] wifi: rtw88: USB fixes

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Message-ID: <Y/9toUMQlZ4fLbe0@kroah.com>
Date:   Wed, 1 Mar 2023 16:22:09 +0100
From:   Greg KH <greg@...ah.com>
To:     Sascha Hauer <s.hauer@...gutronix.de>
Cc:     stable@...r.kernel.org,
        "linux-wireless@...r.kernel.org Neo Jou" <neojou@...il.com>,
        Hans Ulli Kroll <linux@...i-kroll.de>,
        Ping-Ke Shih <pkshih@...ltek.com>,
        Yan-Hsuan Chuang <tony0620emma@...il.com>,
        Kalle Valo <kvalo@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        kernel@...gutronix.de, Alexander Hochbaum <alex@...udo.com>,
        Da Xue <da@...re.computer>, Po-Hao Huang <phhuang@...ltek.com>,
        Andreas Henriksson <andreas@...al.se>,
        Viktor Petrenko <g0000ga@...il.com>
Subject: Re: [PATCH v2 0/3] wifi: rtw88: USB fixes

On Wed, Mar 01, 2023 at 08:11:41AM +0100, Sascha Hauer wrote:
> On Fri, Feb 10, 2023 at 12:16:29PM +0100, Sascha Hauer wrote:
> > This series addresses issues for the recently added RTW88 USB support
> > reported by Andreas Henriksson and also our customer.
> > 
> > The hardware can't handle urbs that have a size of multiple of the
> > bulkout_size (usually 512 bytes). The symptom is that the hardware
> > stalls completely. The issue can be reproduced by sending a suitably
> > sized ping packet from the device:
> > 
> > ping -s 394 <somehost>
> > 
> > (It's 394 bytes here on a RTL8822CU and RTL8821CU, the actual size may
> > differ on other chips, it was 402 bytes on a RTL8723DU)
> > 
> > Other than that qsel was not set correctly. The sympton here is that
> > only one of multiple bulk endpoints was used to send data.
> > 
> > Changes since v1:
> > - Use URB_ZERO_PACKET to let the USB host controller handle it automatically
> >   rather than working around the issue.
> > 
> > Sascha Hauer (3):
> >   wifi: rtw88: usb: Set qsel correctly
> >   wifi: rtw88: usb: send Zero length packets if necessary
> >   wifi: rtw88: usb: drop now unnecessary URB size check
> 
> These patches went in upstream as:
> 
> 7869b834fb07c wifi: rtw88: usb: Set qsel correctly
> 07ce9fa6ab0e5 wifi: rtw88: usb: send Zero length packets if necessary
> 462c8db6a0116 wifi: rtw88: usb: drop now unnecessary URB size check
> 
> These patches make the RTW88 USB support much more reliable. Can they be
> picked for the current 6.2 stable series please?

All now queued up, thanks.

greg k-h