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From: Iker Pedrosa <ikerpedrosam@gmail.com>
To: Javier Martinez Canillas <javierm@redhat.com>,
	 Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	 Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	 David Airlie <airlied@gmail.com>,
	Simona Vetter <simona@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	 Iker Pedrosa <ikerpedrosam@gmail.com>
Subject: [PATCH 2/5] drm/solomon: Use drm_WARN_ON_ONCE instead of WARN_ON
Date: Fri, 12 Sep 2025 18:42:10 +0200	[thread overview]
Message-ID: <20250912-improve-ssd130x-v1-2-bc9389ed299e@gmail.com> (raw)
In-Reply-To: <20250912-improve-ssd130x-v1-0-bc9389ed299e@gmail.com>

To prevent log spam, convert all instances to the DRM-specific
drm_WARN_ON_ONCE() macro. This ensures that a warning is emitted only
the first time the condition is met for a given device instance, which
is the desired behavior within the graphics subsystem.

Signed-off-by: Iker Pedrosa <ikerpedrosam@gmail.com>
---
 drivers/gpu/drm/solomon/ssd130x.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ssd130x.c
index 297593c7fd20a5a5da81f1e1fcfda9092b19cf90..c6939377ec4b5a42ce0f40d070ce60d544d8516d 100644
--- a/drivers/gpu/drm/solomon/ssd130x.c
+++ b/drivers/gpu/drm/solomon/ssd130x.c
@@ -1390,7 +1390,7 @@ static void ssd130x_primary_plane_reset(struct drm_plane *plane)
 {
 	struct ssd130x_plane_state *ssd130x_state;
 
-	WARN_ON(plane->state);
+	drm_WARN_ON_ONCE(plane->dev, plane->state);
 
 	ssd130x_state = kzalloc(sizeof(*ssd130x_state), GFP_KERNEL);
 	if (!ssd130x_state)
@@ -1405,7 +1405,7 @@ static struct drm_plane_state *ssd130x_primary_plane_duplicate_state(struct drm_
 	struct ssd130x_plane_state *old_ssd130x_state;
 	struct ssd130x_plane_state *ssd130x_state;
 
-	if (WARN_ON(!plane->state))
+	if (drm_WARN_ON_ONCE(plane->dev, !plane->state))
 		return NULL;
 
 	old_ssd130x_state = to_ssd130x_plane_state(plane->state);
@@ -1555,7 +1555,7 @@ static void ssd130x_crtc_reset(struct drm_crtc *crtc)
 {
 	struct ssd130x_crtc_state *ssd130x_state;
 
-	WARN_ON(crtc->state);
+	drm_WARN_ON_ONCE(crtc->dev, crtc->state);
 
 	ssd130x_state = kzalloc(sizeof(*ssd130x_state), GFP_KERNEL);
 	if (!ssd130x_state)
@@ -1569,7 +1569,7 @@ static struct drm_crtc_state *ssd130x_crtc_duplicate_state(struct drm_crtc *crtc
 	struct ssd130x_crtc_state *old_ssd130x_state;
 	struct ssd130x_crtc_state *ssd130x_state;
 
-	if (WARN_ON(!crtc->state))
+	if (drm_WARN_ON_ONCE(crtc->dev, !crtc->state))
 		return NULL;
 
 	old_ssd130x_state = to_ssd130x_crtc_state(crtc->state);

-- 
2.51.0


  parent reply	other threads:[~2025-09-12 16:42 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-12 16:42 [PATCH 0/5] drm/solomon: Code improvements and DRM helper adoption Iker Pedrosa
2025-09-12 16:42 ` [PATCH 1/5] drm/solomon: Move calls to drm_gem_fb_end_cpu*() Iker Pedrosa
2025-09-17  9:06   ` Javier Martinez Canillas
2025-09-17  9:20     ` Thomas Zimmermann
2025-09-12 16:42 ` Iker Pedrosa [this message]
2025-09-17  9:23   ` [PATCH 2/5] drm/solomon: Use drm_WARN_ON_ONCE instead of WARN_ON Javier Martinez Canillas
2025-09-12 16:42 ` [PATCH 3/5] drm/solomon: Simplify mode_valid() using DRM helper Iker Pedrosa
2025-09-17  9:27   ` Javier Martinez Canillas
2025-09-12 16:42 ` [PATCH 4/5] drm/solomon: Simplify get_modes() " Iker Pedrosa
2025-09-17  9:28   ` Javier Martinez Canillas
2025-09-12 16:42 ` [PATCH 5/5] drm/solomon: Enforce one assignment per line Iker Pedrosa
2025-09-17  9:29   ` Javier Martinez Canillas
2025-09-15 11:24 ` [PATCH 0/5] drm/solomon: Code improvements and DRM helper adoption Thomas Zimmermann

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