From: Len Brown <lenb@kernel.org>
To: Shaohua Li <shaohua.li@intel.com>
Cc: linux acpi <linux-acpi@vger.kernel.org>, Adam Belay <abelay@novell.com>
Subject: Re: [patch] Hook acpi D-state method to pnp suspend/resume
Date: Wed, 6 Jun 2007 21:55:41 -0400 [thread overview]
Message-ID: <200706062155.41912.lenb@kernel.org> (raw)
In-Reply-To: <1180665425.27219.5.camel@sli10-conroe.sh.intel.com>
On Thursday 31 May 2007 22:37, Shaohua Li wrote:
I like this patch, it may save power while in S3...
I gather that it should also automatically expose the D-state controls
for these PNP devices in sysfs, which may come in very handy...
> +static int pnpacpi_suspend(struct pnp_dev *dev, pm_message_t state)
> +{
> + return acpi_bus_set_power((acpi_handle)dev->data, 3);
> +}
> +
This should usually work, but...
If the device is enabled as a wakeup device, this could
disable its wakeup capability.
So in that case, we need to check _S3W to make sure that
we are not putting the device in a D-state deeper than
it can still wake the system.
-Len
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prev parent reply other threads:[~2007-06-07 1:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-01 2:37 [patch] Hook acpi D-state method to pnp suspend/resume Shaohua Li
2007-06-07 1:55 ` Len Brown [this message]
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