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Diffstat (limited to 'target/linux/generic-2.6/patches-2.6.25/920-backport-gpio-is-valid.patch')
-rw-r--r--target/linux/generic-2.6/patches-2.6.25/920-backport-gpio-is-valid.patch18
1 files changed, 18 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.25/920-backport-gpio-is-valid.patch b/target/linux/generic-2.6/patches-2.6.25/920-backport-gpio-is-valid.patch
new file mode 100644
index 0000000000..966270b78e
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.25/920-backport-gpio-is-valid.patch
@@ -0,0 +1,18 @@
+Backport gpio_is_valid() for gpiolib from linux-2.6.26
+Index: linux-2.6.25.10/include/asm-generic/gpio.h
+===================================================================
+--- linux-2.6.25.10.orig/include/asm-generic/gpio.h 2008-07-03 05:46:47.000000000 +0200
++++ linux-2.6.25.10/include/asm-generic/gpio.h 2008-07-20 20:32:12.000000000 +0200
+@@ -16,6 +16,12 @@
+ #define ARCH_NR_GPIOS 256
+ #endif
+
++static inline int gpio_is_valid(int number)
++{
++ /* only some non-negative numbers are valid */
++ return ((unsigned)number) < ARCH_NR_GPIOS;
++}
++
+ struct seq_file;
+
+ /**