change_bit routine is left implementation dependent until now. This routine is now defined for arm platforms in asm-arm/bitops.h
The Flexible Static memory controller driver, placed in mtd/nand/fsmc_nand.c needs this routine. FSMC is a memory controller peripheral from ST. The new driver implements the NAND interface part of the peripheral.
Signed-off-by: Vipin Kumar vipin.kumar@st.com --- arch/arm/include/asm/bitops.h | 11 +++++++++-- 1 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h index 270f163..435857b 100644 --- a/arch/arm/include/asm/bitops.h +++ b/arch/arm/include/asm/bitops.h @@ -29,8 +29,6 @@ extern void set_bit(int nr, volatile void * addr);
extern void clear_bit(int nr, volatile void * addr);
-extern void change_bit(int nr, volatile void * addr); - static inline void __change_bit(int nr, volatile void *addr) { unsigned long mask = BIT_MASK(nr); @@ -39,6 +37,15 @@ static inline void __change_bit(int nr, volatile void *addr) *p ^= mask; }
+static inline void change_bit(int nr, volatile void *addr) +{ + unsigned long flags; + + local_irq_save(flags); + __change_bit(nr, addr); + local_irq_restore(flags); +} + static inline int __test_and_set_bit(int nr, volatile void *addr) { unsigned long mask = BIT_MASK(nr);