On 2017-11-02 07:26 AM, Arnd Bergmann wrote:
> It seems impossible to build this driver without setting either
> CONFIG_DEBUG_KERNEL or CONFIG_DEBUG_DRIVER:
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services.h: In function 
> 'set_reg_field_value_ex':
> drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services.h:132:2: error: implicit 
> declaration of function 'ASSERT'; did you mean 'IS_ERR'? 
> [-Werror=implicit-function-declaration]
>
> This moves the ASSERT() macro and related helpers outside of
> the #ifdef to get it to build again.
>
> Signed-off-by: Arnd Bergmann <a...@arndb.de>
> ---
>  drivers/gpu/drm/amd/display/dc/os_types.h | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/os_types.h 
> b/drivers/gpu/drm/amd/display/dc/os_types.h
> index 86170b40b5c5..499bd52004cf 100644
> --- a/drivers/gpu/drm/amd/display/dc/os_types.h
> +++ b/drivers/gpu/drm/amd/display/dc/os_types.h
> @@ -61,8 +61,6 @@
>   * general debug capabilities
>   *
>   */
> -#if defined(CONFIG_DEBUG_KERNEL) || defined(CONFIG_DEBUG_DRIVER)
> -
>  #if defined(CONFIG_HAVE_KGDB) || defined(CONFIG_KGDB)
>  #define ASSERT_CRITICAL(expr) do {   \
>       if (WARN_ON(!(expr))) { \
> @@ -75,7 +73,7 @@
>               ; \
>       } \
>  } while (0)
> -#endif
> +#endif /* CONFIG_DEBUG_KERNEL || CONFIG_DEBUG_DRIVER */

Is this the right comment here? Looks like it should be /*
defined(CONFIG_HAVE_KGDB) || defined(CONFIG_KGDB) */.

Regards,
  Felix

>  
>  #if defined(CONFIG_DEBUG_KERNEL_DC)
>  #define ASSERT(expr) ASSERT_CRITICAL(expr)
> @@ -86,8 +84,6 @@
>  
>  #define BREAK_TO_DEBUGGER() ASSERT(0)
>  
> -#endif /* CONFIG_DEBUG_KERNEL || CONFIG_DEBUG_DRIVER */
> -
>  #define DC_ERR(...)  do { \
>       dm_error(__VA_ARGS__); \
>       BREAK_TO_DEBUGGER(); \

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