linux-kernel - [PATCH] power_supply: collie_battery: simplify collie_bat

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Date:	Fri, 26 Aug 2011 11:14:29 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Thomas Kunze <thommycheck@....de>,
	Anton Vorontsov <cbouatmailru@...il.com>
Subject: [PATCH] power_supply: collie_battery: simplify collie_bat_probe
 error handling

I think this change is better in readability.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/power/collie_battery.c |   12 +++++-------
 1 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/power/collie_battery.c b/drivers/power/collie_battery.c
index 548d263..89d6fcd 100644
--- a/drivers/power/collie_battery.c
+++ b/drivers/power/collie_battery.c
@@ -322,10 +322,8 @@ static int __devinit collie_bat_probe(struct ucb1x00_dev *dev)
 
 	for (i = 0; i < ARRAY_SIZE(gpios); i++) {
 		ret = gpio_request(gpios[i].gpio, gpios[i].name);
-		if (ret) {
-			i--;
+		if (ret)
 			goto err_gpio;
-		}
 
 		if (gpios[i].output)
 			ret = gpio_direction_output(gpios[i].gpio,
@@ -333,8 +331,10 @@ static int __devinit collie_bat_probe(struct ucb1x00_dev *dev)
 		else
 			ret = gpio_direction_input(gpios[i].gpio);
 
-		if (ret)
+		if (ret) {
+			gpio_free(gpios[i].gpio);
 			goto err_gpio;
+		}
 	}
 
 	mutex_init(&collie_bat_main.work_lock);
@@ -363,10 +363,8 @@ err_psy_reg_main:
 
 	/* see comment in collie_bat_remove */
 	cancel_work_sync(&bat_work);
-
-	i--;
 err_gpio:
-	for (; i >= 0; i--)
+	while (--i >= 0)
 		gpio_free(gpios[i].gpio);
 
 	return ret;
-- 
1.7.4.1



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