From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc: bhelgaas@google.com, koba.ko@canonical.com,
sathyanarayanan.kuppuswamy@linux.intel.com,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/4] PCI: Keep AER status in pci_restore_state()
Date: Thu, 20 Apr 2023 13:49:47 +0300 [thread overview]
Message-ID: <20230420104947.GM66750@black.fi.intel.com> (raw)
In-Reply-To: <20230420015830.309845-1-kai.heng.feng@canonical.com>
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@canonical.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
prev parent reply other threads:[~2023-04-20 10:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-20 1:58 Kai-Heng Feng
2023-04-20 1:58 ` [PATCH v2 2/4] PCI/AER: Factor out interrput toggling into helpers Kai-Heng Feng
2023-04-20 10:47 ` Mika Westerberg
2023-04-20 1:58 ` [PATCH v2 3/4] PCI/AER: Disable AER interrupt on suspend Kai-Heng Feng
2023-04-20 10:50 ` Mika Westerberg
2023-04-20 1:58 ` [PATCH v2 4/4] PCI/DPC: Disable DPC interrupt during suspend Kai-Heng Feng
2023-04-20 10:51 ` Mika Westerberg
2023-04-20 10:49 ` Mika Westerberg [this message]
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