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backlight: led_bl: Use devm_kcalloc() for array space allocation

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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@vivo.com>
Reviewed-by: "Daniel Thompson (RISCstar)" <danielt@kernel.org>
Link: https://lore.kernel.org/r/20250819035804.433615-1-rongqianfeng@vivo.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Qianfeng Rong
2025-09-16 16:48:49 +01:00
committed by Lee Jones
parent fe85a39d84
commit d0fa875152
1 changed files with 2 additions and 2 deletions
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drivers/video/backlight/led_bl.c
+2 -2
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@@ -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;