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