[U-Boot] [PATCH v2 02/17] change_bit routine defined

[Vipin KUMAR <vipin.kumar@st.com>]

On 5/3/2010 5:01 AM, Tom Rix wrote:
> Vipin KUMAR wrote:
>> change_bit routine is left implementation dependent until now.
>> This routine is now defined for arm platforms in asm-arm/bitops.h
>>
> 
> Add a reason on why this change is needed.
> Something like
> 'mtd/nand/.. needs this to be defined..
>  and the new nand driver needs it.. '
> 

OK. I would expand the commit log to include the above information

Regards
Vipin
> Tom
> 
> 
>> 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);
> 
>