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-rw-r--r--arch/arm/mach-pxa/include/mach/gpio.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm/mach-pxa/include/mach/gpio.h b/arch/arm/mach-pxa/include/mach/gpio.h
index be4900e..4049b23 100644
--- a/arch/arm/mach-pxa/include/mach/gpio.h
+++ b/arch/arm/mach-pxa/include/mach/gpio.h
@@ -100,8 +100,11 @@
/* NOTE: some PXAs have fewer on-chip GPIOs (like PXA255, with 85).
- * Those cases currently cause holes in the GPIO number space.
+ * Those cases currently cause holes in the GPIO number space, the
+ * actual number of the last GPIO is recorded by 'pxa_last_gpio'.
*/
+extern int pxa_last_gpio;
+
#define NR_BUILTIN_GPIO 128
static inline int gpio_get_value(unsigned gpio)
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