hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

gpio/gpio-ich: fix ichx_gpio_check_available() return what callers expect 

ichx_gpio_check_available() returns either 0 or -ENXIO depending on whether
the given GPIO is available or not. However, callers of this function treat
the return value as boolean:

	...
	if (!ichx_gpio_check_available(gpio, nr))
		return -ENXIO;

which erroneusly fails when the GPIO is available and not vice versa.

Fix this by making the function return boolean as expected by the callers.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Mika Westerberg 2013-02-27 17:25:15 +02:00 committed by Grant Likely
parent 24d7628fe8
commit e97f9b5277
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpio/gpio-ich.c
View File

@ -128,9 +128,9 @@ static int ichx_read_bit(int reg, unsigned nr)
return data & (1 << bit) ? 1 : 0; return data & (1 << bit) ? 1 : 0;
} }
static int ichx_gpio_check_available(struct gpio_chip *gpio, unsigned nr) static bool ichx_gpio_check_available(struct gpio_chip *gpio, unsigned nr)
{ {
return (ichx_priv.use_gpio & (1 << (nr / 32))) ? 0 : -ENXIO; return ichx_priv.use_gpio & (1 << (nr / 32));
} }
static int ichx_gpio_direction_input(struct gpio_chip *gpio, unsigned nr) static int ichx_gpio_direction_input(struct gpio_chip *gpio, unsigned nr)