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From: Dmitry Osipenko <dmitry.osipenko@collabora.com>
To: "David Airlie" <airlied@gmail.com>,
	"Gerd Hoffmann" <kraxel@redhat.com>,
	"Gurchetan Singh" <gurchetansingh@chromium.org>,
	"Chia-I Wu" <olvaffe@gmail.com>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	"Daniel Almeida" <daniel.almeida@collabora.com>,
	"Gustavo Padovan" <gustavo.padovan@collabora.com>,
	"Daniel Stone" <daniel@fooishbar.org>,
	"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"Sumit Semwal" <sumit.semwal@linaro.org>,
	"Christian König" <christian.koenig@amd.com>,
	"Qiang Yu" <yuq825@gmail.com>,
	"Steven Price" <steven.price@arm.com>,
	"Alyssa Rosenzweig" <alyssa.rosenzweig@collabora.com>,
	"Rob Herring" <robh@kernel.org>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	kernel@collabora.com, virtualization@lists.linux-foundation.org
Subject: [PATCH v11 06/10] drm/shmem-helper: Remove obsoleted is_iomem test
Date: Mon, 27 Feb 2023 09:02:15 +0300	[thread overview]
Message-ID: <20230227060219.904986-7-dmitry.osipenko@collabora.com> (raw)
In-Reply-To: <20230227060219.904986-1-dmitry.osipenko@collabora.com>

Everything that uses the mapped buffer should by agnostic to is_iomem.
The only reason for the is_iomem test is 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.

Suggested-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
---
 drivers/gpu/drm/drm_gem_shmem_helper.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index 56de12bb28b1..ba1db7c5659c 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -409,12 +409,6 @@ int drm_gem_shmem_vmap(struct drm_gem_shmem_object *shmem,
 
 	if (obj->import_attach) {
 		ret = dma_buf_vmap(obj->import_attach->dmabuf, map);
-		if (!ret) {
-			if (drm_WARN_ON(obj->dev, map->is_iomem)) {
-				dma_buf_vunmap(obj->import_attach->dmabuf, map);
-				return -EIO;
-			}
-		}
 	} else {
 		pgprot_t prot = PAGE_KERNEL;
 
-- 
2.39.2


  parent reply	other threads:[~2023-02-27  6:03 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-27  6:02 [PATCH v11 00/10] Add generic memory shrinker to VirtIO-GPU and Panfrost DRM drivers Dmitry Osipenko
2023-02-27  6:02 ` [PATCH v11 01/10] drm/shmem-helper: Factor out pages alloc/release from drm_gem_shmem_get/put_pages() Dmitry Osipenko
2023-02-27  6:02 ` [PATCH v11 02/10] drm/shmem-helper: Add pages_pin_count field Dmitry Osipenko
2023-02-27  6:02 ` [PATCH v11 03/10] drm/shmem-helper: Switch drm_gem_shmem_vmap/vunmap to use pin/unpin Dmitry Osipenko
2023-02-27  6:02 ` [PATCH v11 04/10] drm/shmem-helper: Factor out unpinning part from drm_gem_shmem_purge() Dmitry Osipenko
2023-02-27  6:02 ` [PATCH v11 05/10] drm/shmem-helper: Add memory shrinker Dmitry Osipenko
2023-02-27  8:25   ` kernel test robot
2023-02-27 11:05     ` Dmitry Osipenko
2023-02-27  8:56   ` kernel test robot
2023-02-27  6:02 ` Dmitry Osipenko [this message]
2023-02-27  6:02 ` [PATCH v11 07/10] drm/shmem-helper: Export drm_gem_shmem_get_pages_sgt_locked() Dmitry Osipenko
2023-02-27  6:02 ` [PATCH v11 08/10] drm/gem: Add drm_gem_pin_unlocked() Dmitry Osipenko
2023-02-27  6:02 ` [PATCH v11 09/10] drm/virtio: Support memory shrinking Dmitry Osipenko
2023-02-27  6:02 ` [PATCH v11 10/10] drm/panfrost: Switch to generic memory shrinker Dmitry Osipenko

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