Messages in this thread | | | From | Sascha Hauer <> | Subject | [PATCH v2 0/3] wifi: rtw88: USB fixes | Date | Fri, 10 Feb 2023 12:16:29 +0100 |
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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
drivers/net/wireless/realtek/rtw88/usb.c | 18 +++--------------- 1 file changed, 3 insertions(+), 15 deletions(-)
-- 2.30.2
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