HID: remove hid-ff

hid-ff.c now calls only pidff (generic driver), the special ones are now
in separate drivers. Invoke pidff on all non-special directly.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/usbhid/Kconfig

@@ -24,21 +24,8 @@ config USB_HID
 comment "Input core support is needed for USB HID input layer or HIDBP support"
 	depends on USB_HID && INPUT=n
 
-config HID_FF
-	bool "Force feedback support (EXPERIMENTAL)"
-	depends on USB_HID && EXPERIMENTAL
-	help
-	  Say Y here is you want force feedback support for a few HID devices.
-	  See below for a list of supported devices.
-
-	  See <file:Documentation/input/ff.txt> for a description of the force
-	  feedback API.
-
-	  If unsure, say N.
-
 config HID_PID
 	bool "PID device support"
-	depends on HID_FF
 	help
 	  Say Y here if you have a PID-compliant device and wish to enable force
 	  feedback for it. Microsoft Sidewinder Force Feedback 2 is one of such

drivers/hid/usbhid/Makefile

@@ -13,9 +13,6 @@ endif
 ifeq ($(CONFIG_HID_PID),y)
 	usbhid-objs	+= hid-pidff.o
 endif
-ifeq ($(CONFIG_HID_FF),y)
-	usbhid-objs	+= hid-ff.o
-endif
 
 obj-$(CONFIG_USB_HID)		+= usbhid.o
 obj-$(CONFIG_USB_KBD)		+= usbkbd.o

drivers/hid/usbhid/hid-core.c

@@ -935,7 +935,7 @@ static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	usb_set_intfdata(intf, hid);
 	hid->ll_driver = &usb_hid_driver;
 	hid->hid_output_raw_report = usbhid_output_raw_report;
-	hid->ff_init = hid_ff_init;
+	hid->ff_init = hid_pidff_init;
 #ifdef CONFIG_USB_HIDDEV
 	hid->hiddev_connect = hiddev_connect;
 	hid->hiddev_hid_event = hiddev_hid_event;

include/linux/hid.h

@@ -757,17 +757,10 @@ int usbhid_quirks_init(char **quirks_param);
 void usbhid_quirks_exit(void);
 void usbhid_set_leds(struct hid_device *hid);
 
-#ifdef CONFIG_HID_FF
-int hid_ff_init(struct hid_device *hid);
-
 #ifdef CONFIG_HID_PID
 int hid_pidff_init(struct hid_device *hid);
 #else
-static inline int hid_pidff_init(struct hid_device *hid) { return -ENODEV; }
-#endif
-
-#else
-#define hid_ff_init	NULL
+#define hid_pidff_init NULL
 #endif
 
 #ifdef CONFIG_HID_DEBUG