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Message-Id: <20260128072610.2476625-1-nichen@iscas.ac.cn> Date: Wed, 28 Jan 2026 15:26:10 +0800 From: Chen Ni <nichen@...as.ac.cn> To: linux@...ck-us.net Cc: linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org, Chen Ni <nichen@...as.ac.cn> Subject: [PATCH] hwmon: (pwm-fan) Add missing check for device_property_read_u32_array Add check for the return value of device_property_read_u32_array() and return the error if it fails in order to catch the error. Signed-off-by: Chen Ni <nichen@...as.ac.cn> --- drivers/hwmon/pwm-fan.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c index 37269db2de84..3535007f5c37 100644 --- a/drivers/hwmon/pwm-fan.c +++ b/drivers/hwmon/pwm-fan.c @@ -609,8 +609,11 @@ static int pwm_fan_probe(struct platform_device *pdev) for (i = 0; i < ctx->tach_count; i++) ctx->pulses_per_revolution[i] = 2; - device_property_read_u32_array(dev, "pulses-per-revolution", - ctx->pulses_per_revolution, ctx->tach_count); + ret = device_property_read_u32_array(dev, "pulses-per-revolution", + ctx->pulses_per_revolution, ctx->tach_count); + if (ret) + return dev_err_probe(dev, ret, + "Failed to read pulses-per-revolution\n"); } channels = devm_kcalloc(dev, channel_count + 1, -- 2.25.1
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