On Tuesday, 17 of June 2008, Rafael J. Wysocki wrote:
> On Tuesday, 17 of June 2008, Matt Helsley wrote:
> >
> > On Tue, 2008-06-17 at 02:14 +0200, Rafael J. Wysocki wrote:
> > > From: Rafael J. Wysocki <rjw@xxxxxxx>
> > >
> > > Introduce function pointer platform_pci_power_manageable to be used
> > > by the platform-related code to point to a function allowing us to
> > > check if given device is power manageable by the platform.
> > >
> > > Introduce acpi_pci_power_manageable() playing that role for ACPI.
> > >
> > > Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
> > > ---
> > > drivers/pci/pci-acpi.c | 11 +++++++++++
> > > drivers/pci/pci.c | 1 +
> > > drivers/pci/pci.h | 1 +
> > > 3 files changed, 13 insertions(+)
> > >
> > > Index: linux-2.6/drivers/pci/pci-acpi.c
> > > ===================================================================
> > > --- linux-2.6.orig/drivers/pci/pci-acpi.c
> > > +++ linux-2.6/drivers/pci/pci-acpi.c
> > > @@ -315,6 +315,16 @@ static pci_power_t acpi_pci_choose_state
> > > }
> > > #endif
> > >
> > > +static bool acpi_pci_power_manageable(struct pci_dev *dev)
> > > +{
> > > + acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
> > > +
> > > + if (!handle)
> > > + return -ENODEV;
> >
> > Seems like a bad idea to pass non-true/false values using a bool.
> > Wouldn't an int return type be more appropriate here?
>
> That's a bug actually. It should be 'false'.
Updated patch follows.
Thanks,
Rafael
---
From: Rafael J. Wysocki <rjw@xxxxxxx>
Introduce function pointer platform_pci_power_manageable to be used
by the platform-related code to point to a function allowing us to
check if given device is power manageable by the platform.
Introduce acpi_pci_power_manageable() playing that role for ACPI.
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
---
drivers/pci/pci-acpi.c | 8 ++++++++
drivers/pci/pci.c | 1 +
drivers/pci/pci.h | 1 +
3 files changed, 10 insertions(+)
Index: linux-2.6/drivers/pci/pci-acpi.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci-acpi.c
+++ linux-2.6/drivers/pci/pci-acpi.c
@@ -315,6 +315,13 @@ static pci_power_t acpi_pci_choose_state
}
#endif
+static bool acpi_pci_power_manageable(struct pci_dev *dev)
+{
+ acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
+
+ return handle ? acpi_bus_power_manageable(handle) : false;
+}
+
static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
{
acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
@@ -398,6 +405,7 @@ static int __init acpi_pci_init(void)
#ifdef CONFIG_ACPI_SLEEP
platform_pci_choose_state = acpi_pci_choose_state;
#endif
+ platform_pci_power_manageable = acpi_pci_power_manageable;
platform_pci_set_power_state = acpi_pci_set_power_state;
return 0;
}
Index: linux-2.6/drivers/pci/pci.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci.c
+++ linux-2.6/drivers/pci/pci.c
@@ -378,6 +378,7 @@ pci_restore_bars(struct pci_dev *dev)
pci_update_resource(dev, &dev->resource[i], i);
}
+bool (*platform_pci_power_manageable)(struct pci_dev *dev);
int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t t);
/**
Index: linux-2.6/drivers/pci/pci.h
===================================================================
--- linux-2.6.orig/drivers/pci/pci.h
+++ linux-2.6/drivers/pci/pci.h
@@ -6,6 +6,7 @@ extern void pci_remove_sysfs_dev_files(s
extern void pci_cleanup_rom(struct pci_dev *dev);
/* Firmware callbacks */
+extern bool (*platform_pci_power_manageable)(struct pci_dev *dev);
extern pci_power_t (*platform_pci_choose_state)(struct pci_dev *dev);
extern int (*platform_pci_set_power_state)(struct pci_dev *dev,
pci_power_t state);
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