linux-kernel - [PATCH][next] drivers: thermal: tsens: remove redundant u32 comparison with less than zero

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Message-Id: <20190531105708.15312-1-colin.king@canonical.com>
Date:   Fri, 31 May 2019 11:57:08 +0100
From:   Colin King <colin.king@...onical.com>
To:     Andy Gross <agross@...nel.org>,
        David Brown <david.brown@...aro.org>,
        Amit Kucheria <amit.kucheria@...aro.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][next] drivers: thermal: tsens: remove redundant u32 comparison with less than zero

From: Colin Ian King <colin.king@...onical.com>

The u32 variable hw_id is unsigned and cannot be less than zero so
the comparison with less than zero is always false and hence is redundant
and can be removed.

Addresses-Coverity: ("Unsigned compared against 0")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/thermal/qcom/tsens-common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c
index 928e8e81ba69..f4419f45025d 100644
--- a/drivers/thermal/qcom/tsens-common.c
+++ b/drivers/thermal/qcom/tsens-common.c
@@ -69,7 +69,7 @@ bool is_sensor_enabled(struct tsens_priv *priv, u32 hw_id)
 	u32 val;
 	int ret;
 
-	if ((hw_id > (priv->num_sensors - 1)) || (hw_id < 0))
+	if (hw_id > (priv->num_sensors - 1))
 		return -EINVAL;
 	ret = regmap_field_read(priv->rf[SENSOR_EN], &val);
 	if (ret)
-- 
2.20.1