# Re: \[PATCH\] alpha: Hook up gpiolib support

- From: Andrew Morton \<akpm@linux-foundation.org\>
- Date: 2011-05-24 23:27:18 
- List: linux-alpha
- Page: https://ratatoskr.run/linux-alpha/2011/05/3719868
- Thread: https://ratatoskr.run/linux-alpha/2011/05/3716921/t.md

```text
On Wed, 18 May 2011 13:58:02 -0700
Mark Brown [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
_

```