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-rw-r--r--Documentation/gpio.txt10
1 files changed, 5 insertions, 5 deletions
diff --git a/Documentation/gpio.txt b/Documentation/gpio.txt
index 77a1d11af723..6f83fa965b4b 100644
--- a/Documentation/gpio.txt
+++ b/Documentation/gpio.txt
@@ -72,11 +72,11 @@ in this document, but drivers acting as clients to the GPIO interface must
72not care how it's implemented.) 72not care how it's implemented.)
73 73
74That said, if the convention is supported on their platform, drivers should 74That said, if the convention is supported on their platform, drivers should
75use it when possible. Platforms must declare GENERIC_GPIO support in their 75use it when possible. Platforms must select ARCH_REQUIRE_GPIOLIB or
76Kconfig (boolean true), and provide an <asm/gpio.h> file. Drivers that can't 76ARCH_WANT_OPTIONAL_GPIOLIB in their Kconfig. Drivers that can't work without
77work without standard GPIO calls should have Kconfig entries which depend 77standard GPIO calls should have Kconfig entries which depend on GPIOLIB. The
78on GENERIC_GPIO. The GPIO calls are available, either as "real code" or as 78GPIO calls are available, either as "real code" or as optimized-away stubs,
79optimized-away stubs, when drivers use the include file: 79when drivers use the include file:
80 80
81 #include <linux/gpio.h> 81 #include <linux/gpio.h>
82 82