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drm/radeon: Improve fbdev object-test helper

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Look up the framebuffer GEM object in fbdev object test with the
respective helper drm_gem_fb_get_obj(). The look-up helper warns if
no GEM object has been installed. Upcasting types prevents runtime
type checking, so avoid upcast to struct radeon_bo.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Thomas Zimmermann
2023-03-16 10:37:30 +01:00
committed by Alex Deucher
parent f04b8af5e9
commit 276f7b4bd5
1 changed files with 12 additions and 4 deletions
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16
drivers/gpu/drm/radeon/radeon_fb.c
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@@ -35,6 +35,7 @@
#include <drm/drm_fb_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/radeon_drm.h>
#include "radeon.h"
@@ -366,10 +367,17 @@ void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
{
if (!rdev->mode_info.rfbdev)
struct drm_fb_helper *fb_helper = rdev->ddev->fb_helper;
struct drm_gem_object *gobj;
if (!fb_helper)
return false;
if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->fb.obj[0]))
return true;
return false;
gobj = drm_gem_fb_get_obj(fb_helper->fb, 0);
if (!gobj)
return false;
if (gobj != &robj->tbo.base)
return false;
return true;
}