From: Qipeng Zha <qipeng.zha@intel.com>
Date: Thu, 9 Apr 2015 22:25:10 +0000 (+0800)
Subject: gpiolib: change gpio pin from unsigned to signed in acpi callback
X-Git-Tag: omap-for-v4.2/omap1-v2~19^2~4
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a4811622fea15fdc78102069f573061fc87f3570;p=pandora-kernel.git

gpiolib: change gpio pin from unsigned to signed in acpi callback

The signed error will be wrongly used as valid gpio offset

Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Qipeng Zha <qipeng.zha@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index d2303d50f561..725d16138b74 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -550,7 +550,7 @@ acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address,
 
 	length = min(agpio->pin_table_length, (u16)(pin_index + bits));
 	for (i = pin_index; i < length; ++i) {
-		unsigned pin = agpio->pin_table[i];
+		int pin = agpio->pin_table[i];
 		struct acpi_gpio_connection *conn;
 		struct gpio_desc *desc;
 		bool found;