linux-kernel - [PATCH] drm/atomic: fix warning of unused variable

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Date:   Tue, 7 Jun 2022 19:08:48 +0800
From:   "GONG, Ruiqi" <gongruiqi1@...wei.com>
To:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
CC:     <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        "Wang Weiyang" <wangweiyang2@...wei.com>,
        Gong Ruiqi <gongruiqi1@...wei.com>
Subject: [PATCH] drm/atomic: fix warning of unused variable

Fix the `unused-but-set-variable` warning as how other iteration
wrappers do.

Link: https://lore.kernel.org/all/202206071049.pofHsRih-lkp@intel.com/
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: GONG, Ruiqi <gongruiqi1@...wei.com>
---
 include/drm/drm_atomic.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 0777725085df..10b1990bc1f6 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -1022,6 +1022,7 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
 	for ((__i) = 0; \
 	     (__i) < (__state)->num_private_objs && \
 		     ((obj) = (__state)->private_objs[__i].ptr, \
+		      (void)(obj) /* Only to avoid unused-but-set-variable warning */, \
 		      (new_obj_state) = (__state)->private_objs[__i].new_state, 1); \
 	     (__i)++)
 
-- 
2.25.1