[PATCH 1/2] bus: mvebu-mbus: Provide stub function for mvebu_mbus_get_io_win_info()

[Stefan Roese]

Hi Andrew,

On 29.08.2016 14:57, Andrew Lunn wrote:
> On Mon, Aug 29, 2016 at 01:04:55PM +0200, Stefan Roese wrote:
>> This patch provides a stub function for mvebu_mbus_get_io_win_info(),
>> which will be used for all non-Orion (ARM32 MVEBU) platforms for
>> compile test coverage.
>>
>> Signed-off-by: Stefan Roese <sr at denx.de>
>> Cc: Gregory CLEMENT <gregory.clement at free-electrons.com>
>> Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
>> Cc: Marcin Wojtas <mw at semihalf.com>
>> Cc: Arnd Bergmann <arnd at arndb.de>
>> Cc: Vinod Koul <vinod.koul at intel.com>
>> ---
>>  include/linux/mbus.h | 9 +++++++--
>>  1 file changed, 7 insertions(+), 2 deletions(-)
>>
>> diff --git a/include/linux/mbus.h b/include/linux/mbus.h
>> index d610232..a884405 100644
>> --- a/include/linux/mbus.h
>> +++ b/include/linux/mbus.h
>> @@ -55,6 +55,8 @@ struct mbus_dram_target_info
>>  #ifdef CONFIG_PLAT_ORION
>>  extern const struct mbus_dram_target_info *mv_mbus_dram_info(void);
>>  extern const struct mbus_dram_target_info *mv_mbus_dram_info_nooverlap(void);
>> +int mvebu_mbus_get_io_win_info(phys_addr_t phyaddr, u32 *size, u8 *target,
>> +			       u8 *attr);
>>  #else
>>  static inline const struct mbus_dram_target_info *mv_mbus_dram_info(void)
>>  {
>> @@ -64,14 +66,17 @@ static inline const struct mbus_dram_target_info *mv_mbus_dram_info_nooverlap(vo
>>  {
>>  	return NULL;
>>  }
>> +static inline int mvebu_mbus_get_io_win_info(phys_addr_t phyaddr, u32 *size,
>> +					     u8 *target, u8 *attr)
>> +{
>> +	return 0;
>> +}
>>  #endif
>
> Hi Stefan
>
> If i understand it correctly, this should never be used for real, it
> is here only for compile testing?

Correct.

> Maybe add a WARN_ON_ONCE(1) here? And a comment, why it should never
> happen.

Yes, I could do this. I (as others too) just followed this example here:

git ID 63a9332b "ARM: Orion: Get address map from plat-orion instead
of via platform_data"

Should I add these WARN_ON_ONCE(1) macros to the other stub functions
in this header as well? Perhaps as a new 3rd patch in this series?

Thanks,
Stefan