+/* linux/include/asm-generic/bitops/non-atomic.h */
+
+#ifndef PLATFORM__SET_BIT
+# define __set_bit generic_set_bit
+#endif
+
+#ifndef PLATFORM__CLEAR_BIT
+# define __clear_bit generic_clear_bit
+#endif
+
+#ifndef PLATFORM_FFS
+# define ffs generic_ffs
+#endif
+
+#ifndef PLATFORM_FLS
+# define fls generic_fls
+#endif
+
+/**
+ * __set_bit - Set a bit in memory
+ * @nr: the bit to set
+ * @addr: the address to start counting from
+ *
+ * Unlike set_bit(), this function is non-atomic and may be reordered.
+ * If it's called on the same region of memory simultaneously, the effect
+ * may be that only one operation succeeds.
+ */
+static inline void generic_set_bit(int nr, volatile unsigned long *addr)
+{
+ unsigned long mask = BIT_MASK(nr);
+ unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
+
+ *p |= mask;
+}
+
+static inline void generic_clear_bit(int nr, volatile unsigned long *addr)
+{
+ unsigned long mask = BIT_MASK(nr);
+ unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
+
+ *p &= ~mask;
+}