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