linux-kernel - [PATCH][thermal-next] thermal: brcmstb: remove two redundant integer range checks

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Message-Id: <20170903131619.6857-1-colin.king@canonical.com>
Date:   Sun,  3 Sep 2017 14:16:19 +0100
From:   Colin King <colin.king@...onical.com>
To:     Markus Mayer <mmayer@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Brian Norris <computersforpeace@...il.com>,
        Gregory Fong <gregory.0xf0@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][thermal-next] thermal: brcmstb: remove two redundant integer range checks

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

The comparisons for integer low on low > INT_MAX and also
integer high > INT_MAX are never going to be true since an
int type cannot be greater than INT_MAX.  Remove these redundant
checks.

Detected by: CoverityScan CID#1455245, 1455248 ("Operands don't affect
  result (CONSTANT_EXPRESSION_RESULT)")

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/thermal/broadcom/brcmstb_thermal.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/thermal/broadcom/brcmstb_thermal.c b/drivers/thermal/broadcom/brcmstb_thermal.c
index 87b8e7a86ee3..bcb3945feea6 100644
--- a/drivers/thermal/broadcom/brcmstb_thermal.c
+++ b/drivers/thermal/broadcom/brcmstb_thermal.c
@@ -278,8 +278,6 @@ static int brcmstb_set_trips(void *data, int low, int high)
 	dev_dbg(priv->dev, "set trips %d <--> %d\n", low, high);
 
 	if (low) {
-		if (low > INT_MAX)
-			low = INT_MAX;
 		avs_tmon_set_trip_temp(priv, TMON_TRIP_TYPE_LOW, low);
 		avs_tmon_trip_enable(priv, TMON_TRIP_TYPE_LOW, 1);
 	} else {
@@ -287,8 +285,6 @@ static int brcmstb_set_trips(void *data, int low, int high)
 	}
 
 	if (high < ULONG_MAX) {
-		if (high > INT_MAX)
-			high = INT_MAX;
 		avs_tmon_set_trip_temp(priv, TMON_TRIP_TYPE_HIGH, high);
 		avs_tmon_trip_enable(priv, TMON_TRIP_TYPE_HIGH, 1);
 	} else {
-- 
2.14.1