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Message-Id: <20230210111632.1985205-1-s.hauer@pengutronix.de>
Date: Fri, 10 Feb 2023 12:16:29 +0100
From: Sascha Hauer <s.hauer@...gutronix.de>
To: linux-wireless@...r.kernel.org
Cc: 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>,
Sascha Hauer <s.hauer@...gutronix.de>
Subject: [PATCH v2 0/3] wifi: rtw88: USB fixes
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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