lkml.org 
[lkml]   [2013]   [Apr]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3.8-stable] gpio: fix wrong checking condition for gpio range
Date
From: Haojian Zhuang <haojian.zhuang@linaro.org>

This patch looks like it should be in the 3.8-stable tree, should we apply
it?

------------------

From: "Haojian Zhuang <haojian.zhuang@linaro.org>"

commit ad4e1a7caf937ad395ced585ca85a7d14395dc80 upstream

If index++ calculates from 0, the checking condition of "while
(index++)" fails & it doesn't check any more. It doesn't follow
the loop that used at here.

Replace it by endless loop at here. Then it keeps parsing
"gpio-ranges" property until it ends.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
---
drivers/gpio/gpiolib-of.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index d542a14..ea537fa 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -228,7 +228,7 @@ static void of_gpiochip_add_pin_range(struct gpio_chip *chip)
if (!np)
return;

- do {
+ for (;; index++) {
ret = of_parse_phandle_with_args(np, "gpio-ranges",
"#gpio-range-cells", index, &pinspec);
if (ret)
@@ -257,8 +257,7 @@ static void of_gpiochip_add_pin_range(struct gpio_chip *chip)

if (ret)
break;
-
- } while (index++);
+ }
}

#else
--
1.7.10.4


\
 
 \ /
  Last update: 2013-04-13 17:41    [W:0.066 / U:0.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site