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? Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
