On Wed, 18 May 2011 13:58:02 -0700
Mark Brown [off-list ref] wrote:
Allow people to use gpiolib on Alpha if they want to, mostly for build
coverage. The header is a stright copy of that for Microblaze, which in
turn was taken from PowerPC.
I got a great pile of build errors.
drivers/gpio/gpiolib.c:69: error: 'ARCH_NR_GPIOS' undeclared here (not in a function)
drivers/gpio/gpiolib.c: In function 'gpio_ensure_requested':
drivers/gpio/gpiolib.c:96: error: dereferencing pointer to incomplete type
drivers/gpio/gpiolib.c:100: error: dereferencing pointer to incomplete type
drivers/gpio/gpiolib.c:108: error: dereferencing pointer to incomplete type
drivers/gpio/gpiolib.c: In function 'gpiochip_find_base':
drivers/gpio/gpiolib.c:783: error: redefinition of 'gpio_export_link'
include/linux/gpio.h:120: note: previous definition of 'gpio_export_link' was here drivers/gpio/gpiolib.c:830: error: redefinition of 'gpio_sysfs_set_active_low'
include/linux/gpio.h:128: note: previous definition of 'gpio_sysfs_set_active_low' was here
drivers/gpio/timbgpio.c:49: error: field 'gpio' has incomplete type
drivers/gpio/timbgpio.c: In function 'timbgpio_update_bit':
drivers/gpio/timbgpio.c:57: warning: type defaults to 'int' in declaration of '__mptr'
etc.
This fixed them:
--- a/arch/alpha/Kconfig~alpha-hook-up-gpiolib-support-fix
+++ a/arch/alpha/Kconfig
@@ -52,6 +52,9 @@ config GENERIC_CALIBRATE_DELAY
config GENERIC_CMOS_UPDATE
def_bool y
+config GENERIC_GPIO
+ def_bool y
+
config ZONE_DMA
bool
default y_