linux-kernel - [PATCH drm-misc-next] drm: verisilicon: suppress snprintf warning for pixel clock name

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Message-ID: <20260207013255.2075294-1-zhengxingda@iscas.ac.cn>
Date: Sat,  7 Feb 2026 09:32:55 +0800
From: Icenowy Zheng <zhengxingda@...as.ac.cn>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Icenowy Zheng <zhengxingda@...as.ac.cn>,
	kernel test robot <lkp@...el.com>
Subject: [PATCH drm-misc-next] drm: verisilicon: suppress snprintf warning for pixel clock name

Although it's generally expected that the pixel clock ID will only have
one decimal digit, this isn't enforced in vs_dc.c source code, and the
compiler will argue about the buffer being not long enough.

Enlarge the snprintf() buffer for generating pixel clock name to be
enough for a UINT_MAX pixel clock ID in order to suppress the compiler
warning.

Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202602060154.ONBYvM9m-lkp@intel.com/
Signed-off-by: Icenowy Zheng <zhengxingda@...as.ac.cn>
---
 drivers/gpu/drm/verisilicon/vs_dc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/verisilicon/vs_dc.c b/drivers/gpu/drm/verisilicon/vs_dc.c
index ba1b3f261a3ae..5f629d2d4beac 100644
--- a/drivers/gpu/drm/verisilicon/vs_dc.c
+++ b/drivers/gpu/drm/verisilicon/vs_dc.c
@@ -46,8 +46,8 @@ static int vs_dc_probe(struct platform_device *pdev)
 	struct vs_dc *dc;
 	void __iomem *regs;
 	unsigned int port_count, i;
-	/* pix0/pix1 */
-	char pixclk_name[5];
+	/* pix%u */
+	char pixclk_name[14];
 	int irq, ret;
 
 	if (!dev->of_node) {
-- 
2.52.0