Re: [PATCH v2] arm: omap2: remove redundant multiplatform checks

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On Wednesday 06 April 2016 04:05 AM, Jonas Rabenstein wrote:
> The directory arch/arm/mach-omap2 is only selected for compilation if
> CONFIG_ARCH_OMAP2PLUS is selected. CONFIG_ARCH_OMAP2PLUS itself is a
> silent option and all machines selecting this option are multiplatform
> devices. As a consequence checks for CONFIG_ARCH_MULTIPLATFORM as well
> as CONFIG_ARCH_OMAP2PLUS within that directory are superfluous and can
> be removed.
> 
> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@xxxxxxxxxxxxxxxxxxxxxxx>
> ---
> changes in v2:
>  * missed two #endif's
> 
>  arch/arm/mach-omap2/Makefile |   2 +-
>  arch/arm/mach-omap2/soc.h    | 121 +++----------------------------------------
>  2 files changed, 8 insertions(+), 115 deletions(-)
> 
> diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
> index 0ba6a0e..04e276c 100644
> --- a/arch/arm/mach-omap2/Makefile
> +++ b/arch/arm/mach-omap2/Makefile
> @@ -2,7 +2,7 @@
>  # Makefile for the linux kernel.
>  #
>  
> -ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \
> +ccflags-y := -I$(srctree)/$(src)/include \
>  	-I$(srctree)/arch/arm/plat-omap/include
>  
>  # Common support
> diff --git a/arch/arm/mach-omap2/soc.h b/arch/arm/mach-omap2/soc.h
> index 364418c..79f1573 100644
> --- a/arch/arm/mach-omap2/soc.h
> +++ b/arch/arm/mach-omap2/soc.h
> @@ -42,79 +42,7 @@
>   * Test if multicore OMAP support is needed
>   */
>  #undef MULTI_OMAP2
> -#undef OMAP_NAME
> -
> -#ifdef CONFIG_ARCH_MULTIPLATFORM
>  #define MULTI_OMAP2
> -#endif
> -#ifdef CONFIG_SOC_OMAP2420
> -# ifdef OMAP_NAME
> -#  undef  MULTI_OMAP2
> -#  define MULTI_OMAP2
> -# else
> -#  define OMAP_NAME omap2420
> -# endif
> -#endif
> -#ifdef CONFIG_SOC_OMAP2430
> -# ifdef OMAP_NAME
> -#  undef  MULTI_OMAP2
> -#  define MULTI_OMAP2
> -# else
> -#  define OMAP_NAME omap2430
> -# endif
> -#endif
> -#ifdef CONFIG_ARCH_OMAP3
> -# ifdef OMAP_NAME
> -#  undef  MULTI_OMAP2
> -#  define MULTI_OMAP2
> -# else
> -#  define OMAP_NAME omap3
> -# endif
> -#endif
> -#ifdef CONFIG_ARCH_OMAP4
> -# ifdef OMAP_NAME
> -#  undef  MULTI_OMAP2
> -#  define MULTI_OMAP2
> -# else
> -#  define OMAP_NAME omap4
> -# endif
> -#endif
> -
> -#ifdef CONFIG_SOC_OMAP5
> -# ifdef OMAP_NAME
> -#  undef  MULTI_OMAP2
> -#  define MULTI_OMAP2
> -# else
> -#  define OMAP_NAME omap5
> -# endif
> -#endif
> -
> -#ifdef CONFIG_SOC_AM33XX
> -# ifdef OMAP_NAME
> -#  undef  MULTI_OMAP2
> -#  define MULTI_OMAP2
> -# else
> -#  define OMAP_NAME am33xx
> -# endif
> -#endif
> -
> -#ifdef CONFIG_SOC_AM43XX
> -# ifdef OMAP_NAME
> -#  undef  MULTI_OMAP2
> -#  define MULTI_OMAP2
> -# else
> -#  define OMAP_NAME am43xx
> -# endif
> -#endif
> -
> -#ifdef CONFIG_SOC_DRA7XX
> -# ifdef OMAP_NAME
> -#  undef MULTI_OMAP2
> -#  define MULTI_OMAP2
> -# else
> -#  define OMAP_NAME DRA7XX
> -# endif
> -#endif
>  
>  /*
>   * Omap device type i.e. EMU/HS/TST/GP/BAD
> @@ -242,11 +170,6 @@ IS_AM_SUBCLASS(437x, 0x437)
>  IS_DRA_SUBCLASS(75x, 0x75)
>  IS_DRA_SUBCLASS(72x, 0x72)
>  
> -#define soc_is_omap24xx()		0
> -#define soc_is_omap242x()		0
> -#define soc_is_omap243x()		0
> -#define soc_is_omap34xx()		0
> -#define soc_is_omap343x()		0

Why are you deleting these definitions. Without these I am sure there
will be a build error when you don't select ARCH_OMAP2 or ARCH_OMAP3 and
building with omap2plus_defconfig.

Thanks and regards,
Lokesh

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