Re: [PATCH] mmc: mmc_mxc: Allow selection only for the correct platforms

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Hi Uwe,

On 1/21/2011 1:33 PM, Uwe Kleine-König wrote:
> Hallo,
> 
> On Thu, Jan 20, 2011 at 03:02:59PM -0200, Fabio Estevam wrote:
>> Currently MMC_MXC driver can be selected by all i.MX devices.
>>
>> Restrict its use only for the appropriate processors.
>>
>> Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
>> ---
>>  drivers/mmc/host/Kconfig |    2 +-
>>  1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
>> index d618e86..a3a9ec1 100644
>> --- a/drivers/mmc/host/Kconfig
>> +++ b/drivers/mmc/host/Kconfig
>> @@ -288,7 +288,7 @@ config MMC_MSM
>>  
>>  config MMC_MXC
>>  	tristate "Freescale i.MX2/3 Multimedia Card Interface support"
>> -	depends on ARCH_MXC
>> +	depends on MACH_MX21 || MACH_MX27 || ARCH_MX31
> What about
> 
> 	depends IMX_HAVE_PLATFORM_MXC_MMC

I would prefer to let the architectures explicitly in Kconfig.

If someone selects IMX_HAVE_PLATFORM_MXC_MMC by mistake on a MX51 board, it will be possible to select the MXC_MMC driver in the kernel for MX51, which is incorrect.

Using the approach of explicitly marking the architectures that support MXC_MMC would avoid such problems as well.
> 
> ?  Then if i.MX29 has the same IP you don't need to touch this again.

Not likely to happen. 

Thanks,

Fabio Estevam


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