linux-kernel - Re: [PATCH] rtw88: 8822ce: fix wifi disconnect after S3/S4 on HONOR laptop

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Message-ID: <874ki4k1ej.fsf@codeaurora.org>
Date:   Mon, 22 Feb 2021 09:27:32 +0200
From:   Kalle Valo <kvalo@...eaurora.org>
To:     陈浩 <chenhaoa@...ontech.com>
Cc:     tony0620emma <tony0620emma@...il.com>, davem <davem@...emloft.net>,
        kuba <kuba@...nel.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        timlee <timlee@...ltek.com>, arnd <arnd@...db.de>
Subject: Re: [PATCH] rtw88: 8822ce: fix wifi disconnect after S3/S4 on HONOR laptop

陈浩 <chenhaoa@...ontech.com> writes:

> By git blame command, I know that the assignment of .driver.pm =
> RTW_PM_OPS
>
> was in commit 44bc17f7f5b3b("rtw88: support wowlan feature for
> 8822c"),
>
> and another commit 7dc7c41607d19("avoid unused function warnings")
>
> pointed out rtw_pci_resume() and rtw_pci_suspend() are not used at
> all.
>
> So I think it's safe to remove them.
>
> Currently, I find that the rtl8822ce wifi chip and the pci bridge of
> it are not linked by pci
>
> after wake up by `lspci` command.
>
> when I set `pcie_aspm.policy=performance ` in the GRUB. The machine
> sleep and
>
> wake up normal.So I think when this ops is assignmented,the sleep and
> wake up procedure
>
> may cause pci device not linked.

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