linux-kernel - [PATCH] drm/msm/mdp4: remove the use of dev_err

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Message-Id: <20250820131300.499727-1-liaoyuanhong@vivo.com>
Date: Wed, 20 Aug 2025 21:12:56 +0800
From: Liao Yuanhong <liaoyuanhong@...o.com>
To: Rob Clark <robin.clark@....qualcomm.com>,
	Dmitry Baryshkov <lumag@...nel.org>,
	Abhinav Kumar <abhinav.kumar@...ux.dev>,
	Jessica Zhang <jessica.zhang@....qualcomm.com>,
	Sean Paul <sean@...rly.run>,
	Marijn Suijten <marijn.suijten@...ainline.org>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Antonino Maniscalco <antomani103@...il.com>,
	linux-arm-msm@...r.kernel.org (open list:DRM DRIVER for Qualcomm display hardware),
	dri-devel@...ts.freedesktop.org (open list:DRM DRIVER for Qualcomm display hardware),
	freedreno@...ts.freedesktop.org (open list:DRM DRIVER for Qualcomm display hardware),
	linux-kernel@...r.kernel.org (open list)
Cc: Liao Yuanhong <liaoyuanhong@...o.com>
Subject: [PATCH] drm/msm/mdp4: remove the use of dev_err_probe()

Logging messages that show some type of "out of memory" error are generally
unnecessary as there is a generic message and a stack dump done by the
memory subsystem. These messages generally increase kernel size without
much added value[1].

The dev_err_probe() doesn't do anything when error is '-ENOMEM'. Therefore,
remove the useless call to dev_err_probe(), and just return the value
instead.

[1]: https://lore.kernel.org/lkml/1402419340.30479.18.camel@joe-AO725/

Signed-off-by: Liao Yuanhong <liaoyuanhong@...o.com>
---
 drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
index 0952c7f18abd..c7d52caa1cba 100644
--- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
@@ -529,7 +529,7 @@ static int mdp4_probe(struct platform_device *pdev)
 
 	mdp4_kms = devm_kzalloc(dev, sizeof(*mdp4_kms), GFP_KERNEL);
 	if (!mdp4_kms)
-		return dev_err_probe(dev, -ENOMEM, "failed to allocate kms\n");
+		return -ENOMEM;
 
 	mdp4_kms->mmio = msm_ioremap(pdev, NULL);
 	if (IS_ERR(mdp4_kms->mmio))
-- 
2.34.1