PCI: shpchp: Remove get_hp_hw_control_from_firmware() wrapper

get_hp_hw_control_from_firmware() is a trivial wrapper around
acpi_get_hp_hw_control_from_firmware(), probably intended to be generic in
case other firmware needed similar OS/platform negotiation.

Remove get_hp_hw_control_from_firmware() and call
acpi_get_hp_hw_control_from_firmware() directly.  Add a stub for
acpi_get_hp_hw_control_from_firmware() for the non-ACPI case.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/pci/hotplug/shpchp.h

@@ -173,16 +173,6 @@ static inline const char *slot_name(struct slot *slot)
 	return hotplug_slot_name(slot->hotplug_slot);
 }
 
-#ifdef CONFIG_ACPI
-#include <linux/pci-acpi.h>
-static inline int get_hp_hw_control_from_firmware(struct pci_dev *dev)
-{
-	return acpi_get_hp_hw_control_from_firmware(dev);
-}
-#else
-#define get_hp_hw_control_from_firmware(dev) (0)
-#endif
-
 struct ctrl_reg {
 	volatile u32 base_offset;
 	volatile u32 slot_avail1;

drivers/pci/hotplug/shpchp_core.c

@@ -277,7 +277,7 @@ static int is_shpc_capable(struct pci_dev *dev)
 		return 1;
 	if (!pci_find_capability(dev, PCI_CAP_ID_SHPC))
 		return 0;
-	if (get_hp_hw_control_from_firmware(dev))
+	if (acpi_get_hp_hw_control_from_firmware(dev))
 		return 0;
 	return 1;
 }

include/linux/pci_hotplug.h

@@ -172,6 +172,11 @@ static inline int pci_get_hp_params(struct pci_dev *dev,
 {
 	return -ENODEV;
 }
+
+static inline int acpi_get_hp_hw_control_from_firmware(struct pci_dev *bridge)
+{
+	return 0;
+}
 static inline bool pciehp_is_native(struct pci_dev *bridge) { return true; }
 #endif
 #endif