media: atomisp: drop unused ATOMISP_MAP_FLAG_* flags

Drop the ATOMISP_MAP_FLAG_CACHED flag, it is never set anywhere;
also drop the matching "cached" parameter to hmm[_bo]_alloc which
value was derived form the never set flag.

Drop the ATOMISP_MAP_FLAG_NOFLUSH, it is not used anywhere.

Link: https://lore.kernel.org/linux-media/20220615205037.16549-27-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

@@ -221,7 +221,7 @@ int hmm_bo_allocated(struct hmm_buffer_object *bo);
  */
 int hmm_bo_alloc_pages(struct hmm_buffer_object *bo,
 		       enum hmm_bo_type type, int from_highmem,
-		       const void __user *userptr, bool cached);
+		       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/include/linux/atomisp.h

@@ -825,9 +825,6 @@ struct atomisp_s_runmode {
 	__u32 mode;
 };
 
-#define ATOMISP_MAP_FLAG_NOFLUSH	0x0001	/* Do not flush cache */
-#define ATOMISP_MAP_FLAG_CACHED		0x0002	/* Enable cache */
-
 struct atomisp_update_exposure {
 	unsigned int gain;
 	unsigned int digi_gain;

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

@@ -174,7 +174,6 @@ ia_css_ptr hmm_alloc(size_t bytes, enum hmm_bo_type type,
 {
 	unsigned int pgnr;
 	struct hmm_buffer_object *bo;
-	bool cached = attrs & ATOMISP_MAP_FLAG_CACHED;
 	int ret;
 
 	/*
@@ -195,7 +194,7 @@ ia_css_ptr hmm_alloc(size_t bytes, enum hmm_bo_type type,
 	}
 
 	/* Allocate pages for memory */
-	ret = hmm_bo_alloc_pages(bo, type, from_highmem, userptr, cached);
+	ret = hmm_bo_alloc_pages(bo, type, from_highmem, userptr);
 	if (ret) {
 		dev_err(atomisp_dev, "hmm_bo_alloc_pages failed.\n");
 		goto alloc_page_err;
@@ -209,8 +208,8 @@ ia_css_ptr hmm_alloc(size_t bytes, enum hmm_bo_type type,
 	}
 
 	dev_dbg(atomisp_dev,
-		"%s: pages: 0x%08x (%zu bytes), type: %d from highmem %d, user ptr %p, cached %d\n",
-		__func__, bo->start, bytes, type, from_highmem, userptr, cached);
+		"%s: pages: 0x%08x (%zu bytes), type: %d from highmem %d, user ptr %p\n",
+		__func__, bo->start, bytes, type, from_highmem, userptr);
 
 	return bo->start;
 

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

@@ -651,8 +651,7 @@ 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,
-			       bool cached)
+			       int from_highmem)
 {
 	int ret;
 	unsigned int pgnr, order, blk_pgnr, alloc_pgnr;
@@ -730,7 +729,6 @@ static int alloc_private_pages(struct hmm_buffer_object *bo,
 		} else {
 			blk_pgnr = order_to_nr(order);
 
-			if (!cached) {
 			/*
 			 * set memory to uncacheable -- UC_MINUS
 			 */
@@ -743,7 +741,6 @@ static int alloc_private_pages(struct hmm_buffer_object *bo,
 
 				goto cleanup;
 			}
-			}
 
 			for (j = 0; j < blk_pgnr; j++, i++) {
 				bo->page_obj[i].page = pages + j;
@@ -797,7 +794,7 @@ static void free_user_pages(struct hmm_buffer_object *bo,
  * Convert user space virtual address into pages list
  */
 static int alloc_user_pages(struct hmm_buffer_object *bo,
-			    const void __user *userptr, bool cached)
+			    const void __user *userptr)
 {
 	int page_nr;
 	int i;
@@ -895,7 +892,7 @@ static int alloc_user_pages(struct hmm_buffer_object *bo,
  */
 int hmm_bo_alloc_pages(struct hmm_buffer_object *bo,
 		       enum hmm_bo_type type, int from_highmem,
-		       const void __user *userptr, bool cached)
+		       const void __user *userptr)
 {
 	int ret = -EINVAL;
 
@@ -909,9 +906,9 @@ 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, cached);
+		ret = alloc_private_pages(bo, from_highmem);
 	} else if (type == HMM_BO_USER) {
-		ret = alloc_user_pages(bo, userptr, cached);
+		ret = alloc_user_pages(bo, userptr);
 	} else {
 		dev_err(atomisp_dev, "invalid buffer type.\n");
 		ret = -EINVAL;