On Wed, 2014-02-19 at 17:07 -0500, Paul Gortmaker wrote:
> commit d2ae2e20fbdde5a65f3a5a153044ab1e5c53f7cc ("driver/memory:Move
> Freescale IFC driver to a common driver") introduces this build
> regression into the mpc85xx_defconfig:
>
> drivers/built-in.o: In function `fsl_ifc_nand_remove':
> drivers/mtd/nand/fsl_ifc_nand.c:1147: undefined reference to `fsl_ifc_ctrl_dev'
> drivers/mtd/nand/fsl_ifc_nand.c:1147: undefined reference to `fsl_ifc_ctrl_dev'
> drivers/built-in.o: In function `fsl_ifc_nand_probe':
> drivers/mtd/nand/fsl_ifc_nand.c:1031: undefined reference to `fsl_ifc_ctrl_dev'
> drivers/mtd/nand/fsl_ifc_nand.c:1031: undefined reference to `fsl_ifc_ctrl_dev'
> drivers/built-in.o: In function `match_bank':
> drivers/mtd/nand/fsl_ifc_nand.c:1013: undefined reference to `convert_ifc_address'
> drivers/built-in.o: In function `fsl_ifc_nand_probe':
> drivers/mtd/nand/fsl_ifc_nand.c:1059: undefined reference to `fsl_ifc_ctrl_dev'
> drivers/mtd/nand/fsl_ifc_nand.c:1080: undefined reference to `fsl_ifc_ctrl_dev'
> drivers/mtd/nand/fsl_ifc_nand.c:1069: undefined reference to `fsl_ifc_ctrl_dev'
> drivers/mtd/nand/fsl_ifc_nand.c:1069: undefined reference to `fsl_ifc_ctrl_dev'
> make: *** [vmlinux] Error 1
>
> This happens because there is nothing to descend us into the
> drivers/memory directory in the mpc85xx_defconfig. It wasn't
> selecting CONFIG_MEMORY. So we never built drivers/memory/fsl_ifc.o
> even with CONFIG_FSL_IFC=y, and so we have nothing to link against.
>
> In order to remain compatible with old config files and to avoid
> such build failures, make CONFIG_FSL_IFC select CONFIG_MEMORY.
> Also fix the whitespace issue (spaces vs. a tab) in the Kconfig.
>
> Cc: Prabhakar Kushwaha <prabhakar@xxxxxxxxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
> ---
>
> [This probably makes sense to go in via Greg's char-misc/char-misc-next
> (vs. powerpc-next) since that is where the regression was introduced.]
>
> arch/powerpc/Kconfig | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 957bf344c0f5..d2d8d8f50610 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -738,7 +738,8 @@ config FSL_LBC
>
> config FSL_IFC
> bool
> - depends on FSL_SOC
> + depends on FSL_SOC
> + select MEMORY
Why do we still have FSL_IFC in arch/powerpc/Kconfig if the driver has
been moved? The NAND driver and other selectors of FSL_IFC can select
MEMORY.
-Scott
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