From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Linux PCI <linux-pci@vger.kernel.org>,
Linux PM <linux-pm@vger.kernel.org>,
Bjorn Helgaas <helgaas@kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 1/2] PCI: PM: Avoid resuming devices in D3hot during system suspend
Date: Fri, 7 Jun 2019 14:17:39 +0300 [thread overview]
Message-ID: <20190607111739.GT2781@lahna.fi.intel.com> (raw)
In-Reply-To: <3078848.tiz3m2NLmW@kreacher>
On Fri, Jun 07, 2019 at 12:30:58AM +0200, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>
> The current code resumes devices in D3hot during system suspend if
> the target power state for them is D3cold, but that is not necessary
> in general. It only is necessary to do that if the platform firmware
> requires the device to be resumed, but that should be covered by
> the platform_pci_need_resume() check anyway, so rework
> pci_dev_keep_suspended() to avoid returning 'false' for devices
> in D3hot which need not be resumed due to platform firmware
> requirements.
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
next prev parent reply other threads:[~2019-06-07 11:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-06 22:28 [PATCH 0/2] PCI: PM: Optimization and cleanup Rafael J. Wysocki
2019-06-06 22:30 ` [PATCH v2 1/2] PCI: PM: Avoid resuming devices in D3hot during system suspend Rafael J. Wysocki
2019-06-07 11:17 ` Mika Westerberg [this message]
2019-06-06 22:32 ` [PATCH 2/2] PCI: PM: Replace pci_dev_keep_suspended() with two functions Rafael J. Wysocki
2019-06-07 11:20 ` Mika Westerberg
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