xen/acpi: Fix Kconfig dependency on CPU_FREQ

The functions: "acpi_processor_*" sound like they depend on CONFIG_ACPI_PROCESSOR
but in reality they are exposed when CONFIG_CPU_FREQ=[y|m]. As such
update the Kconfig to have this dependency and fix compile issues:

ERROR: "acpi_processor_unregister_performance" [drivers/xen/xen-acpi-processor.ko] undefined!
ERROR: "acpi_processor_notify_smm" [drivers/xen/xen-acpi-processor.ko] undefined!
ERROR: "acpi_processor_register_performance" [drivers/xen/xen-acpi-processor.ko] undefined!
ERROR: "acpi_processor_preregister_performance" [drivers/xen/xen-acpi-processor.ko] undefined!

Note: We still need the CONFIG_ACPI
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index 7c77b46553bab1c5d10d4d10e7cb5db0b22a5c8f..b527eba6fe0d128d1615c935d13250e9769b65d0 100644 (file)
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -203,7 +203,7 @@ config XEN_PCIDEV_BACKEND
          If in doubt, say m.
 config XEN_ACPI_PROCESSOR
        tristate "Xen ACPI processor"
-       depends on XEN && X86 && ACPI_PROCESSOR
+       depends on XEN && X86 && ACPI_PROCESSOR && CPU_FREQ
        default m
        help
           This ACPI processor uploads Power Management information to the Xen hypervisor.