On Friday, 3 of October 2008, Andrew Morton wrote:
> On Fri, 26 Sep 2008 22:21:47 +0200 "Rafael J. Wysocki" <rjw@xxxxxxx> wrote:
>
> > Len,
> >
> > I think we should do this in .27.
>
> Is Len not there? Can some other acpi person please review this for
> 2.6.27 inclusion?
>
>
> > From: Rafael J. Wysocki <rjw@xxxxxxx>
> >
> > ACPI: Make /proc/acpi/wakeup interface handle PCI devices (again)
> >
> > Make the ACPI /proc/acpi/wakeup interface set the appropriate
> > wake-up bits of physical devices corresponding to the ACPI
> > devices and make those bits be set initially for devices that are
> > enabled to wake up by default. This is needed to restore the
> > previous behavior for the PCI devices that were previously handled
> > correctly with the help of the /proc/acpi/wakeup interface.
>
> hm, if you say so. It's a bit hard to judge the impact of not fixing this?
There are people for whom /proc/acpi/wakeup worked, but since Tino Keitel
was the only person reporting this problem, I think it's not widespread.
> When is "previous"? Was 2.6.26 similarly busted?
Well, "previous" means "as in 2.6.26 and earlier", so this is a recent
regression.
/proc/acpi/ is going to go away at one point, but I think we shouldn't break
working setups given that the fix is not very intrusive.
> > Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
> > ---
> > drivers/acpi/glue.c | 5 ++++-
> > drivers/acpi/sleep/proc.c | 10 ++++++++++
> > 2 files changed, 14 insertions(+), 1 deletion(-)
> >
> > Index: linux-2.6/drivers/acpi/sleep/proc.c
> > ===================================================================
> > --- linux-2.6.orig/drivers/acpi/sleep/proc.c
> > +++ linux-2.6/drivers/acpi/sleep/proc.c
> > @@ -377,6 +377,14 @@ acpi_system_wakeup_device_seq_show(struc
> > return 0;
> > }
> >
> > +static void physical_device_enable_wakeup(struct acpi_device *adev)
> > +{
> > + struct device *dev = acpi_get_physical_device(adev->handle);
> > +
> > + if (dev && device_can_wakeup(dev))
> > + device_set_wakeup_enable(dev, adev->wakeup.state.enabled);
> > +}
> > +
> > static ssize_t
> > acpi_system_write_wakeup_device(struct file *file,
> > const char __user * buffer,
> > @@ -411,6 +419,7 @@ acpi_system_write_wakeup_device(struct f
> > }
> > }
> > if (found_dev) {
> > + physical_device_enable_wakeup(found_dev);
> > list_for_each_safe(node, next, &acpi_wakeup_device_list) {
> > struct acpi_device *dev = container_of(node,
> > struct
> > @@ -428,6 +437,7 @@ acpi_system_write_wakeup_device(struct f
> > dev->pnp.bus_id, found_dev->pnp.bus_id);
> > dev->wakeup.state.enabled =
> > found_dev->wakeup.state.enabled;
> > + physical_device_enable_wakeup(dev);
> > }
> > }
> > }
> > Index: linux-2.6/drivers/acpi/glue.c
> > ===================================================================
> > --- linux-2.6.orig/drivers/acpi/glue.c
> > +++ linux-2.6/drivers/acpi/glue.c
> > @@ -165,8 +165,11 @@ static int acpi_bind_one(struct device *
> > "firmware_node");
> > ret = sysfs_create_link(&acpi_dev->dev.kobj, &dev->kobj,
> > "physical_node");
> > - if (acpi_dev->wakeup.flags.valid)
> > + if (acpi_dev->wakeup.flags.valid) {
> > device_set_wakeup_capable(dev, true);
> > + device_set_wakeup_enable(dev,
> > + acpi_dev->wakeup.state.enabled);
> > + }
> > }
> >
> > return 0;
>
>
>
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