[PATCH] mfd/syscon: Fix compilation issue when built for imx

[Shawn Guo]

On Mon, Oct 29, 2012 at 10:42:33PM +0530, Vikram Narayanan wrote:
> Compiling for a IMX6Q SoC with imx_v6_v7_defconfig results in the following error
> 
> <<<
> drivers/mfd/syscon.c:94:15: error: variable 'syscon_regmap_config' has initializer but incomplete type
> drivers/mfd/syscon.c:95:2: error: unknown field 'reg_bits' specified in initializer
> drivers/mfd/syscon.c:95:2: warning: excess elements in struct initializer [enabled by default]
> drivers/mfd/syscon.c:95:2: warning: (near initialization for 'syscon_regmap_config') [enabled by default]
> drivers/mfd/syscon.c:96:2: error: unknown field 'val_bits' specified in initializer
> drivers/mfd/syscon.c:96:2: warning: excess elements in struct initializer [enabled by default]
> drivers/mfd/syscon.c:96:2: warning: (near initialization for 'syscon_regmap_config') [enabled by default]
> drivers/mfd/syscon.c:97:2: error: unknown field 'reg_stride' specified in initializer
> drivers/mfd/syscon.c:97:2: warning: excess elements in struct initializer [enabled by default]
> drivers/mfd/syscon.c:97:2: warning: (near initialization for 'syscon_regmap_config') [enabled by default]
> drivers/mfd/syscon.c: In function 'syscon_probe':
> drivers/mfd/syscon.c:124:2: error: invalid use of undefined type 'struct regmap_config'
> drivers/mfd/syscon.c:125:2: error: implicit declaration of function 'devm_regmap_init_mmio' [-Werror=implicit-function-declaration]
> drivers/mfd/syscon.c:125:17: warning: assignment makes pointer from integer without a cast [enabled by default]
> cc1: some warnings being treated as errors
> >>>
> 
> The datastructures are guarded with CONFIG_REGMAP in linux/regmap.h
> Selecting REGMAP solves the compilation error.
> 
> Signed-off-by: Vikram Narayanan <vikram186 at gmail.com>
> Cc: Shawn Guo <shawn.guo at linaro.org>
> ---
> I'm not sure whether this is the right way to fix, or this is already fixed.
> Please keep me in Cc while replying. I'm not subscribed to the list.
> 
It's been fixed by commit 5784ee4 (regmap: select REGMAP if REGMAP_MMIO
and REGMAP_IRQ enabled) which has hit the mainline.

Shawn