linux-kernel - [PATCH 7/9] regulator: tps65218-regulator: Remove pointless 'is unsigned int <0' check

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Date:   Fri, 26 Jun 2020 07:57:36 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     broonie@...nel.org, lgirdwood@...il.com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Lee Jones <lee.jones@...aro.org>, Keerthy <j-keerthy@...com>,
        Tero Kristo <t-kristo@...com>, Dave Gerlach <d-gerlach@...com>,
        linux-omap@...r.kernel.org
Subject: [PATCH 7/9] regulator: tps65218-regulator: Remove pointless 'is unsigned int <0' check

'rid' is declared as unsigned int, so there is little point checking for <0.

Removing these checks fixes the following W=1 warnings:

 drivers/regulator/tps65218-regulator.c: In function ‘tps65218_pmic_set_suspend_enable’:
 drivers/regulator/tps65218-regulator.c:131:10: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
 131 | if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
 | ^
 drivers/regulator/tps65218-regulator.c: In function ‘tps65218_pmic_set_suspend_disable’:
 drivers/regulator/tps65218-regulator.c:144:10: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
 144 | if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
 | ^

Cc: Keerthy <j-keerthy@...com>
Cc: Tero Kristo <t-kristo@...com>
Cc: Dave Gerlach <d-gerlach@...com>
Cc: linux-omap@...r.kernel.org
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/regulator/tps65218-regulator.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c
index 05d13f8079182..9133d0af793a7 100644
--- a/drivers/regulator/tps65218-regulator.c
+++ b/drivers/regulator/tps65218-regulator.c
@@ -128,7 +128,7 @@ static int tps65218_pmic_set_suspend_enable(struct regulator_dev *dev)
 	struct tps65218 *tps = rdev_get_drvdata(dev);
 	unsigned int rid = rdev_get_id(dev);
 
-	if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
+	if (rid > TPS65218_LDO_1)
 		return -EINVAL;
 
 	return tps65218_clear_bits(tps, dev->desc->bypass_reg,
@@ -141,7 +141,7 @@ static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev)
 	struct tps65218 *tps = rdev_get_drvdata(dev);
 	unsigned int rid = rdev_get_id(dev);
 
-	if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
+	if (rid > TPS65218_LDO_1)
 		return -EINVAL;
 
 	/*
-- 
2.25.1