linux-kernel - [PATCH] gpio: gpio-ml-ioh: fix off-by-one for displaying variable i in dev

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Date:	Tue, 14 Jun 2011 19:12:57 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Grant Likely <grant.likely@...retlab.ca>
Subject: [PATCH] gpio: gpio-ml-ioh: fix off-by-one for displaying variable
 i in dev_err

with the "for (; i != 0; i--)" sytax, i-- will be executed after the iteration.
thus dev_err shows wrong i value.
Switch to "while(--i >= 0)" which is better in readability.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/gpio/gpio-ml-ioh.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/gpio/gpio-ml-ioh.c b/drivers/gpio/gpio-ml-ioh.c
index 1bc621a..a9016f5 100644
--- a/drivers/gpio/gpio-ml-ioh.c
+++ b/drivers/gpio/gpio-ml-ioh.c
@@ -233,7 +233,7 @@ static int __devinit ioh_gpio_probe(struct pci_dev *pdev,
 	return 0;
 
 err_gpiochip_add:
-	for (; i != 0; i--) {
+	while (--i >= 0) {
 		chip--;
 		ret = gpiochip_remove(&chip->gpio);
 		if (ret)
-- 
1.7.4.1



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