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drm/udl: Remove flags field from struct udl_gem_object

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The flags field in struct udl_gem controls mapping parameters: cached
access for local buffers, write-combined access for imported buffers.

We can drop the field and distinguish both cases by testing whether
struct drm_gem_object.import_attach is NULL.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107094307.19870-2-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2019-11-07 10:43:04 +01:00
parent 165d3448a1
commit 92c4eeb0c9
3 changed files with 7 additions and 25 deletions
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27
drivers/gpu/drm/udl/udl_gem.c
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@@ -25,7 +25,6 @@ struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
return NULL;
}
obj->flags = UDL_BO_CACHEABLE;
return obj;
}
@@ -57,23 +56,6 @@ udl_gem_create(struct drm_file *file,
return 0;
}
static void update_vm_cache_attr(struct udl_gem_object *obj,
struct vm_area_struct *vma)
{
DRM_DEBUG_KMS("flags = 0x%x\n", obj->flags);
/* non-cacheable as default. */
if (obj->flags & UDL_BO_CACHEABLE) {
vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
} else if (obj->flags & UDL_BO_WC) {
vma->vm_page_prot =
pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
} else {
vma->vm_page_prot =
pgprot_noncached(vm_get_page_prot(vma->vm_flags));
}
}
int udl_dumb_create(struct drm_file *file,
struct drm_device *dev,
struct drm_mode_create_dumb *args)
@@ -86,16 +68,21 @@ int udl_dumb_create(struct drm_file *file,
int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
{
struct drm_gem_object *obj;
int ret;
ret = drm_gem_mmap(filp, vma);
if (ret)
return ret;
obj = vma->vm_private_data;
vma->vm_flags &= ~VM_PFNMAP;
vma->vm_flags |= VM_MIXEDMAP;
update_vm_cache_attr(to_udl_bo(vma->vm_private_data), vma);
vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
if (obj->import_attach)
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
return ret;
}
@@ -155,7 +142,7 @@ int udl_gem_vmap(struct udl_gem_object *obj)
return -ENOMEM;
return 0;
}
ret = udl_gem_get_pages(obj);
if (ret)
return ret;