drm/etnaviv: rename etnaviv_gem_vaddr to etnaviv_gem_vmap

This function follows the semantics of vmap() by returning
NULL in case of an error. To make things less confusing
rename it to make make both functions more closely related.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

drivers/gpu/drm/etnaviv/etnaviv_drv.h

@@ -85,7 +85,7 @@ struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
 	struct dma_buf_attachment *attach, struct sg_table *sg);
 int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
 void etnaviv_gem_prime_unpin(struct drm_gem_object *obj);
-void *etnaviv_gem_vaddr(struct drm_gem_object *obj);
+void *etnaviv_gem_vmap(struct drm_gem_object *obj);
 int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
 		struct timespec *timeout);
 int etnaviv_gem_cpu_fini(struct drm_gem_object *obj);

drivers/gpu/drm/etnaviv/etnaviv_dump.c

@@ -215,7 +215,7 @@ void etnaviv_core_dump(struct etnaviv_gpu *gpu)
 
 		iter.hdr->iova = cpu_to_le64(vram->iova);
 
-		vaddr = etnaviv_gem_vaddr(&obj->base);
+		vaddr = etnaviv_gem_vmap(&obj->base);
 		if (vaddr)
 			memcpy(iter.data, vaddr, obj->base.size);
 

drivers/gpu/drm/etnaviv/etnaviv_gem.c

@@ -353,7 +353,7 @@ void etnaviv_gem_put_iova(struct etnaviv_gpu *gpu, struct drm_gem_object *obj)
 	drm_gem_object_unreference_unlocked(obj);
 }
 
-void *etnaviv_gem_vaddr(struct drm_gem_object *obj)
+void *etnaviv_gem_vmap(struct drm_gem_object *obj)
 {
 	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
 

drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c

@@ -31,7 +31,7 @@ struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj)
 
 void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj)
 {
-	return etnaviv_gem_vaddr(obj);
+	return etnaviv_gem_vmap(obj);
 }
 
 void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)