linux-kernel - [PATCH v2] regulator: palmas: Slightly code change for better readability

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Date:	Wed, 06 Jun 2012 20:01:38 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Graeme Gregory <gg@...mlogic.co.uk>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>
Subject: [PATCH v2] regulator: palmas: Slightly code change for better
 readability

It's a little bit hard to read that the "else" case means id == PALMAS_REG_SMPS10.

if (id != PALMAS_REG_SMPS10){
        do something for the cases id != PALMAS_REG_SMPS10;
} else {
        do something for the case id == PALMAS_REG_SMPS10;
}

This patch changes above syntax to switch statement.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/regulator/palmas-regulator.c |   28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c
index b4e10b0..112436b 100644
--- a/drivers/regulator/palmas-regulator.c
+++ b/drivers/regulator/palmas-regulator.c
@@ -517,7 +517,15 @@ static int palmas_smps_init(struct palmas *palmas, int id,
 	if (ret)
 		return ret;
 
-	if (id != PALMAS_REG_SMPS10) {
+	switch (id) {
+	case PALMAS_REG_SMPS10:
+		if (reg_init->mode_sleep) {
+			reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
+			reg |= reg_init->mode_sleep <<
+					PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
+		}
+		break;
+	default:
 		if (reg_init->warm_reset)
 			reg |= PALMAS_SMPS12_CTRL_WR_S;
 
@@ -529,14 +537,8 @@ static int palmas_smps_init(struct palmas *palmas, int id,
 			reg |= reg_init->mode_sleep <<
 					PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
 		}
-	} else {
-		if (reg_init->mode_sleep) {
-			reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
-			reg |= reg_init->mode_sleep <<
-					PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
-		}
-
 	}
+
 	ret = palmas_smps_write(palmas, addr, reg);
 	if (ret)
 		return ret;
@@ -660,10 +662,8 @@ static __devinit int palmas_probe(struct platform_device *pdev)
 		pmic->desc[id].name = palmas_regs_info[id].name;
 		pmic->desc[id].id = id;
 
-		if (id != PALMAS_REG_SMPS10) {
-			pmic->desc[id].ops = &palmas_ops_smps;
-			pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
-		} else {
+		switch (id) {
+		case PALMAS_REG_SMPS10:
 			pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
 			pmic->desc[id].ops = &palmas_ops_smps10;
 			pmic->desc[id].vsel_reg = PALMAS_SMPS10_CTRL;
@@ -672,6 +672,10 @@ static __devinit int palmas_probe(struct platform_device *pdev)
 			pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
 			pmic->desc[id].min_uV = 3750000;
 			pmic->desc[id].uV_step = 1250000;
+			break;
+		default:
+			pmic->desc[id].ops = &palmas_ops_smps;
+			pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
 		}
 
 		pmic->desc[id].type = REGULATOR_VOLTAGE;
-- 
1.7.9.5



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