Re: [PATCH] drm/rockchip: Delete an unnecessary check before drm_gem_object_unreference_unlocked()

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On 2016年07月15日 21:35, SF Markus Elfring wrote:
From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 15 Jul 2016 15:23:22 +0200

The drm_gem_object_unreference_unlocked() function tests whether
its argument is NULL and then returns immediately.
Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
---
  drivers/gpu/drm/rockchip/rockchip_drm_fb.c | 8 ++------
  1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
index 20f12bc..6f64e79 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
@@ -43,14 +43,10 @@ struct drm_gem_object *rockchip_fb_get_gem_obj(struct drm_framebuffer *fb,
  static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb)
  {
  	struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb);
-	struct drm_gem_object *obj;
  	int i;
- for (i = 0; i < ROCKCHIP_MAX_FB_BUFFER; i++) {
-		obj = rockchip_fb->obj[i];
-		if (obj)
-			drm_gem_object_unreference_unlocked(obj);
-	}
+	for (i = 0; i < ROCKCHIP_MAX_FB_BUFFER; i++)
+		drm_gem_object_unreference_unlocked(rockchip_fb->obj[i]);
Good, Thanks for the fixes, Applied to my drm-fixes.

  	drm_framebuffer_cleanup(fb);
  	kfree(rockchip_fb);


--
Mark Yao


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