Re: [PATCH] mtd: Make MTD_BCM47XXSFLASH to depend on MIPS

[RafaÅ MiÅecki]

On 14 October 2015 at 11:04, Javier Martinez Canillas
<javier@xxxxxxxxxxxxxxx> wrote:
> The bcm47xxsflash driver uses the KSEG0ADDR() function to map an address
> to a certain kernel segment. But that is only defined if the MIPS config
> symbol is enabled. The driver does not have an explicit dependency on it
> and relies on a transitive dependency relation:
>
> MTD_BCM47XXSFLASH -> BCMA_SFLASH -> BCMA_DRIVER_MIPS -> BCMA && MIPS
>
> But BCMA_SFLASH and BCMA_DRIVER_MIPS have only runtime and not buildtime
> dependency with MIPS so can be changed to be built test using the config
> COMPILE_TEST symbol. But that would make MTD_BCM47XXSFLASH be built with
> MIPS not enabled and cause the following build error:
>
> drivers/mtd/devices//bcm47xxsflash.c: In function 'bcm47xxsflash_read':
> drivers/mtd/devices//bcm47xxsflash.c:112:2: error: implicit declaration of function 'KSEG0ADDR' [-Werror=implicit-function-declaration]
>   memcpy_fromio(buf, (void __iomem *)KSEG0ADDR(b47s->window + from),

I think we're not really supposed to use KSEG0ADDR anyway. What about
replacing it with ioremap_nocache?

Sorry for the late reply.
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