Driver Core: Add platform device arch data V3

Allow architecture specific data in struct platform_device V3.

With this patch struct pdev_archdata is added to struct
platform_device, similar to struct dev_archdata in found in
struct device. Useful for architecture code that needs to
keep extra data associated with each platform device.

Struct pdev_archdata is different from dev.platform_data, the
convention is that dev.platform_data points to driver-specific
data. It may or may not be required by the driver. The format
of this depends on driver but is the same across architectures.

The structure pdev_archdata is a place for architecture specific
data. This data is handled by architecture specific code (for
example runtime PM), and since it is architecture specific it
should _never_ be touched by device driver code. Exactly like
struct dev_archdata but for platform devices.

[rjw: This change is for power management mostly and that's why it
goes through the suspend tree.]

Signed-off-by: Magnus Damm <[e-mail]>
Acked-by: Kevin Hilman <[e-mail]>
Acked-by: Greg Kroah-Hartman <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

arch/arm/include/asm/device.h

···
 #endif
 };
 
+struct pdev_archdata {
+};
+
 #endif

arch/ia64/include/asm/device.h

···
 #endif
 };
 
+struct pdev_archdata {
+};
+
 #endif /* _ASM_IA64_DEVICE_H */

arch/microblaze/include/asm/device.h

···
 	struct device_node	*of_node;
 };
 
+struct pdev_archdata {
+};
+
 #endif /* _ASM_MICROBLAZE_DEVICE_H */
 
 

arch/powerpc/include/asm/device.h

···
 	return ad->of_node;
 }
 
+struct pdev_archdata {
+};
+
 #endif /* _ASM_POWERPC_DEVICE_H */

arch/sparc/include/asm/device.h

···
 	return ad->prom_node;
 }
 
+struct pdev_archdata {
+};
+
 #endif /* _ASM_SPARC_DEVICE_H */

arch/x86/include/asm/device.h

···
 #endif
 };
 
+struct pdev_archdata {
+};
+
 #endif /* _ASM_X86_DEVICE_H */

include/asm-generic/device.h

···
 struct dev_archdata {
 };
 
+struct pdev_archdata {
+};
+
 #endif /* _ASM_GENERIC_DEVICE_H */

include/linux/platform_device.h

···
 	struct resource	* resource;
 
 	struct platform_device_id	*id_entry;
+
+	/* arch specific additions */
+	struct pdev_archdata	archdata;
 };
 
 #define platform_get_device_id(pdev)	((pdev)->id_entry)