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Message-Id: <20250819035804.433615-1-rongqianfeng@vivo.com> Date: Tue, 19 Aug 2025 11:58:03 +0800 From: Qianfeng Rong <rongqianfeng@...o.com> To: Lee Jones <lee@...nel.org>, Daniel Thompson <danielt@...nel.org>, Jingoo Han <jingoohan1@...il.com>, Helge Deller <deller@....de>, dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org Cc: Qianfeng Rong <rongqianfeng@...o.com> Subject: [PATCH] backlight: led_bl: Use devm_kcalloc() for array space allocation Replace calls of devm_kzalloc() with devm_kcalloc() in led_bl_get_leds() and led_bl_parse_levels() for safer memory allocation with built-in overflow protection. Signed-off-by: Qianfeng Rong <rongqianfeng@...o.com> --- drivers/video/backlight/led_bl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/video/backlight/led_bl.c b/drivers/video/backlight/led_bl.c index d2db157b2c29..dd03d91a6e50 100644 --- a/drivers/video/backlight/led_bl.c +++ b/drivers/video/backlight/led_bl.c @@ -89,7 +89,7 @@ static int led_bl_get_leds(struct device *dev, return -EINVAL; } - leds = devm_kzalloc(dev, sizeof(struct led_classdev *) * nb_leds, + leds = devm_kcalloc(dev, nb_leds, sizeof(struct led_classdev *), GFP_KERNEL); if (!leds) return -ENOMEM; @@ -137,7 +137,7 @@ static int led_bl_parse_levels(struct device *dev, unsigned int db; u32 *levels = NULL; - levels = devm_kzalloc(dev, sizeof(u32) * num_levels, + levels = devm_kcalloc(dev, num_levels, sizeof(u32), GFP_KERNEL); if (!levels) return -ENOMEM; -- 2.34.1
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