linux-kernel - Re: [PATCH v2 1/4] PCI: Keep AER status in pci_restore

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Message-ID: <20230420104947.GM66750@black.fi.intel.com>
Date:   Thu, 20 Apr 2023 13:49:47 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc:     bhelgaas@...gle.com, koba.ko@...onical.com,
        sathyanarayanan.kuppuswamy@...ux.intel.com,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/4] PCI: Keep AER status in pci_restore_state()

On Thu, Apr 20, 2023 at 09:58:27AM +0800, Kai-Heng Feng wrote:
> When AER is using the same IRQ as PME, AER interrupt is treated as a
> wakeup event and it can disrupt system suspend process.
> 
> If that happens, the system will report it's woken up by PME IRQ without
> indicating any AER error since AER status is cleared on resume.
> 
> So keep the AER status so users can know the system is woken up by AER
> instead of PME.
> 
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>

Reviewed-by: Mika Westerberg <mika.westerberg@...ux.intel.com>