agp: kill agp_flush_chipset and corresponding ioctl

The intel drm calls the chipset functions now directly. Userspace
never called the corresponding ioctl, hence it can be killed, too.

Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>

drivers/char/agp/agp.h

@@ -120,7 +120,6 @@ struct agp_bridge_driver {
 	void (*agp_destroy_page)(struct page *, int flags);
 	void (*agp_destroy_pages)(struct agp_memory *);
 	int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
-	void (*chipset_flush)(struct agp_bridge_data *);
 };
 
 struct agp_bridge_data {

drivers/char/agp/compat_ioctl.c

@@ -276,7 +276,6 @@ long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		break;
 
 	case AGPIOC_CHIPSET_FLUSH32:
-		ret_val = agpioc_chipset_flush_wrap(curr_priv);
 		break;
 	}
 

drivers/char/agp/compat_ioctl.h

@@ -102,6 +102,5 @@ void agp_free_memory_wrap(struct agp_memory *memory);
 struct agp_memory *agp_allocate_memory_wrap(size_t pg_count, u32 type);
 struct agp_memory *agp_find_mem_by_key(int key);
 struct agp_client *agp_find_client_by_pid(pid_t id);
-int agpioc_chipset_flush_wrap(struct agp_file_private *priv);
 
 #endif /* _AGP_COMPAT_H */

drivers/char/agp/frontend.c

@@ -957,13 +957,6 @@ static int agpioc_unbind_wrap(struct agp_file_private *priv, void __user *arg)
 	return agp_unbind_memory(memory);
 }
 
-int agpioc_chipset_flush_wrap(struct agp_file_private *priv)
-{
-	DBG("");
-	agp_flush_chipset(agp_bridge);
-	return 0;
-}
-
 static long agp_ioctl(struct file *file,
 		     unsigned int cmd, unsigned long arg)
 {
@@ -1039,7 +1032,6 @@ static long agp_ioctl(struct file *file,
 		break;
 	       
 	case AGPIOC_CHIPSET_FLUSH:
-		ret_val = agpioc_chipset_flush_wrap(curr_priv);
 		break;
 	}
 

drivers/char/agp/generic.c

@@ -81,13 +81,6 @@ static int agp_get_key(void)
 	return -1;
 }
 
-void agp_flush_chipset(struct agp_bridge_data *bridge)
-{
-	if (bridge->driver->chipset_flush)
-		bridge->driver->chipset_flush(bridge);
-}
-EXPORT_SYMBOL(agp_flush_chipset);
-
 /*
  * Use kmalloc if possible for the page list. Otherwise fall back to
  * vmalloc. This speeds things up and also saves memory for small AGP

drivers/char/agp/intel-gtt.c

@@ -984,11 +984,6 @@ static int intel_fake_agp_remove_entries(struct agp_memory *mem,
 	return 0;
 }
 
-static void intel_fake_agp_chipset_flush(struct agp_bridge_data *bridge)
-{
-	intel_private.driver->chipset_flush();
-}
-
 static struct agp_memory *intel_fake_agp_alloc_by_type(size_t pg_count,
 						       int type)
 {
@@ -1222,7 +1217,6 @@ static const struct agp_bridge_driver intel_fake_agp_driver = {
 	.agp_alloc_pages        = agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
 	.agp_destroy_pages      = agp_generic_destroy_pages,
-	.chipset_flush		= intel_fake_agp_chipset_flush,
 };
 
 static const struct intel_gtt_driver i81x_gtt_driver = {

include/linux/agp_backend.h

@@ -106,6 +106,5 @@ extern int agp_rebind_memory(void);
 extern void agp_enable(struct agp_bridge_data *, u32);
 extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *);
 extern void agp_backend_release(struct agp_bridge_data *);
-extern void agp_flush_chipset(struct agp_bridge_data *);
 
 #endif				/* _AGP_BACKEND_H */