Date:   Wed, 27 Mar 2019 11:26:24 +0100
From:   Stanislaw Gruszka <sgruszka@redhat.com>
To:     Tony Chuang <yhchuang@realtek.com>
Cc:     Brian Norris <briannorris@chromium.org>,
        Kalle Valo <kvalo@codeaurora.org>,
        Johannes Berg <johannes@sipsolutions.net>,
        linux-wireless <linux-wireless@vger.kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Pkshih <pkshih@realtek.com>, Andy Huang <tehuang@realtek.com>,
        Larry Finger <Larry.Finger@lwfinger.net>
Subject: Re: [PATCH v8 00/14] rtw88: mac80211 driver for Realtek 802.11ac
 wireless network chips
Message-ID: <20190327102623.GA20943@redhat.com>
References: <1552450443-351-1-git-send-email-yhchuang@realtek.com>
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 <20190326075414.GA8598@redhat.com>
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 <F7CD281DE3E379468C6D07993EA72F84D17CB940@RTITMBSVM04.realtek.com.tw>
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On Wed, Mar 27, 2019 at 04:59:44AM +0000, Tony Chuang wrote:
> > > I also tested on RTL8822CE we generously got from Tony. I replaced wifi
> > > card on my laptop by the 8822CE device. I have warning on resume from
> > > suspend (see below, it could be mac80211 issue though). But network
> > > connection was established after the warning and in general device
> > > works stable for 2 days now.
> > >
> > > Tested-by: Stanislaw Gruszka <sgruszka@redhat.com>
> > >
> > > [16158.826873] rtw_pci 0000:02:00.0: start vif 00:e0:4c:09:94:0f on port 0
> > > [16158.827693] ------------[ cut here ]------------
> > > [16158.827694] wlan0: invalid CW_min/CW_max: 0/0
> > 
> > I didn't test system suspend/resume with this driver yet (oops), but
> > FWIW I've seen reports of this warning on every other mac80211 driver
> > I've supported. I don't think we've ever totally resolved them and I
> > haven't looked closely into the reason for the WARNING.

It looks as mac80211 issue for me as well.

> And we haven't submit patches related to suspend yet.
> Like something in CONFIG_PM.
> Should be added later.

Suspend/resume works for me anyway :-)

Stanislaw