fix button-hotplug build on kernel versions where BIT_MASK is not defined (< 2.6.24)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12682 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/button-hotplug/src/button-hotplug.c b/package/button-hotplug/src/button-hotplug.c
index f76b927..4bdf364 100644 (file)
--- a/package/button-hotplug/src/button-hotplug.c
+++ b/package/button-hotplug/src/button-hotplug.c
@@ -46,6 +46,10 @@
 
 #define BH_ERR(fmt, args...) printk(KERN_ERR "%s: " fmt, DRV_NAME, ##args )
 
+#ifndef BIT_MASK
+#define BIT_MASK(nr)            (1UL << ((nr) % BITS_PER_LONG))
+#endif
+
 struct bh_priv {
        unsigned long           seen[BH_BTN_COUNT];
        struct input_handle     handle;