media: atomisp: drop highmem var/arg from the hmm code

highmem is always false, drop it.

Link: https://lore.kernel.org/linux-media/20220615205037.16549-31-hdegoede@redhat.comReviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/atomisp/include/hmm/hmm_bo.h

@@ -130,7 +130,6 @@ struct hmm_buffer_object {
 	struct mutex		mutex;
 	enum hmm_bo_type	type;
 	struct hmm_page_object	*page_obj;	/* physical pages */
-	int		from_highmem;
 	int		mmap_count;
 	int		status;
 	int		mem_type;
@@ -214,13 +213,12 @@ void hmm_bo_unref(struct hmm_buffer_object *bo);
 int hmm_bo_allocated(struct hmm_buffer_object *bo);
 
 /*
- * allocate/free physical pages for the bo. will try to alloc mem
- * from highmem if from_highmem is set, and type indicate that the
+ * Allocate/Free physical pages for the bo. Type indicates if the
  * pages will be allocated by using video driver (for share buffer)
  * or by ISP driver itself.
  */
 int hmm_bo_alloc_pages(struct hmm_buffer_object *bo,
-		       enum hmm_bo_type type, int from_highmem,
+		       enum hmm_bo_type type,
 		       const void __user *userptr);
 void hmm_bo_free_pages(struct hmm_buffer_object *bo);
 int hmm_bo_page_allocated(struct hmm_buffer_object *bo);

drivers/staging/media/atomisp/pci/hmm/hmm.c

@@ -192,7 +192,7 @@ static ia_css_ptr __hmm_alloc(size_t bytes, enum hmm_bo_type type, const void __
 	}
 
 	/* Allocate pages for memory */
-	ret = hmm_bo_alloc_pages(bo, type, false, userptr);
+	ret = hmm_bo_alloc_pages(bo, type, userptr);
 	if (ret) {
 		dev_err(atomisp_dev, "hmm_bo_alloc_pages failed.\n");
 		goto alloc_page_err;

drivers/staging/media/atomisp/pci/hmm/hmm_bo.c

@@ -650,8 +650,7 @@ static void free_private_bo_pages(struct hmm_buffer_object *bo,
 }
 
 /*Allocate pages which will be used only by ISP*/
-static int alloc_private_pages(struct hmm_buffer_object *bo,
-			       int from_highmem)
+static int alloc_private_pages(struct hmm_buffer_object *bo)
 {
 	int ret;
 	unsigned int pgnr, order, blk_pgnr, alloc_pgnr;
@@ -662,9 +661,6 @@ static int alloc_private_pages(struct hmm_buffer_object *bo,
 	bool reduce_order = false;
 	bool lack_mem = true;
 
-	if (from_highmem)
-		gfp |= __GFP_HIGHMEM;
-
 	pgnr = bo->pgnr;
 
 	bo->page_obj = kmalloc_array(pgnr, sizeof(struct hmm_page_object),
@@ -881,9 +877,6 @@ static int alloc_user_pages(struct hmm_buffer_object *bo,
  * type indicate where are the pages from. currently we have 3 types
  * of memory: HMM_BO_PRIVATE, HMM_BO_USER, HMM_BO_SHARE.
  *
- * from_highmem is only valid when type is HMM_BO_PRIVATE, it will
- * try to alloc memory from highmem if from_highmem is set.
- *
  * userptr is only valid when type is HMM_BO_USER, it indicates
  * the start address from user space task.
  *
@@ -891,7 +884,7 @@ static int alloc_user_pages(struct hmm_buffer_object *bo,
  * HMM_BO_SHARE.
  */
 int hmm_bo_alloc_pages(struct hmm_buffer_object *bo,
-		       enum hmm_bo_type type, int from_highmem,
+		       enum hmm_bo_type type,
 		       const void __user *userptr)
 {
 	int ret = -EINVAL;
@@ -906,7 +899,7 @@ int hmm_bo_alloc_pages(struct hmm_buffer_object *bo,
 	 * add HMM_BO_USER type
 	 */
 	if (type == HMM_BO_PRIVATE) {
-		ret = alloc_private_pages(bo, from_highmem);
+		ret = alloc_private_pages(bo);
 	} else if (type == HMM_BO_USER) {
 		ret = alloc_user_pages(bo, userptr);
 	} else {