netdev - Re: [PATCH v2 10/10] rtw88: disable powersave modes for USB devices

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Date:   Tue, 31 May 2022 09:42:44 +0200
From:   "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>
To:     Ping-Ke Shih <pkshih@...ltek.com>
Cc:     "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "johannes@...solutions.net" <johannes@...solutions.net>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "neojou@...il.com" <neojou@...il.com>,
        "kvalo@...nel.org" <kvalo@...nel.org>,
        "tony0620emma@...il.com" <tony0620emma@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "martin.blumenstingl@...glemail.com" 
        <martin.blumenstingl@...glemail.com>,
        "linux@...i-kroll.de" <linux@...i-kroll.de>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH v2 10/10] rtw88: disable powersave modes for USB devices

On Tue, May 31, 2022 at 01:07:36AM +0000, Ping-Ke Shih wrote:
> On Mon, 2022-05-30 at 15:54 +0200, Sascha Hauer wrote:
> > The powersave modes do not work with USB devices (tested with a
> > RTW8822CU) properly. With powersave modes enabled the driver issues
> > messages like:
> > 
> > rtw_8822cu 1-1:1.2: firmware failed to leave lps state
> > rtw_8822cu 1-1:1.2: timed out to flush queue 3
> 
> Could you try module parameter rtw_disable_lps_deep_mode=1 to see
> if it can work?

No, this module parameter doesn't seem to make any difference.

# cat /sys/module/rtw88_core/parameters/disable_lps_deep
Y

Still "firmware failed to leave lps state" and poor performance.

Any other ideas what may go wrong here?

Sascha

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