From: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Date: Sat, 22 Mar 2025 21:26:04 +0000 (+0300)
Subject: drm/shmem-helper: Remove obsoleted is_iomem test
X-Git-Tag: v6.16-rc1~144^2~21^2~127
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eab10538073c3ff9e21c857bd462f79f2f6f7e00;p=thirdparty%2Flinux.git

drm/shmem-helper: Remove obsoleted is_iomem test

Everything that uses the mapped buffer should be agnostic to is_iomem.
The only reason for the is_iomem test is that we're setting shmem->vaddr
to the returned map->vaddr. Now that the shmem->vaddr code is gone, remove
the obsoleted is_iomem test to clean up the code.

Acked-by: Maxime Ripard <mripard@kernel.org>
Suggested-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.d>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250322212608.40511-7-dmitry.osipenko@collabora.com
---

diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index a9e35a46e72b9..277e792a0c5c6 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -340,12 +340,6 @@ int drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem,
 
 	if (drm_gem_is_imported(obj)) {
 		ret = dma_buf_vmap(obj->dma_buf, map);
-		if (!ret) {
-			if (drm_WARN_ON(obj->dev, map->is_iomem)) {
-				dma_buf_vunmap(obj->dma_buf, map);
-				return -EIO;
-			}
-		}
 	} else {
 		pgprot_t prot = PAGE_KERNEL;