Quoting Leon Romanovsky (2018-05-03 16:36:55)
> From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
>
> The macro u64_to_ptr() and function ptr_to_u64() are useful enough
> to be part of general header, so move them there and allow RDMA
> subsystem reuse them.
>
> Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Feel free to merge this through an appropriate tree, I guess you could
get some acks from LKML.
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Regards, Joonas
> ---
> drivers/gpu/drm/i915/i915_utils.h | 12 ++----------
> include/linux/kernel.h | 12 ++++++++++++
> 2 files changed, 14 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
> index 51dbfe5bb418..de3bfda7bf96 100644
> --- a/drivers/gpu/drm/i915/i915_utils.h
> +++ b/drivers/gpu/drm/i915/i915_utils.h
> @@ -25,6 +25,8 @@
> #ifndef __I915_UTILS_H
> #define __I915_UTILS_H
>
> +#include <linux/kernel.h>
> +
> #undef WARN_ON
> /* Many gcc seem to no see through this and fall over :( */
> #if 0
> @@ -102,16 +104,6 @@
> __T; \
> })
>
> -static inline u64 ptr_to_u64(const void *ptr)
> -{
> - return (uintptr_t)ptr;
> -}
> -
> -#define u64_to_ptr(T, x) ({ \
> - typecheck(u64, x); \
> - (T *)(uintptr_t)(x); \
> -})
> -
> #define __mask_next_bit(mask) ({ \
> int __idx = ffs(mask) - 1; \
> mask &= ~BIT(__idx); \
> diff --git a/include/linux/kernel.h b/include/linux/kernel.h
> index 6a1eb0b0aad9..a738393c9694 100644
> --- a/include/linux/kernel.h
> +++ b/include/linux/kernel.h
> @@ -70,6 +70,18 @@
> */
> #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
>
> +static inline u64 ptr_to_u64(const void *ptr)
> +{
> + return (uintptr_t)ptr;
> +}
> +
> +#define u64_to_ptr(T, x) ( \
> +{ \
> + typecheck(u64, x); \
> + (T *)(uintptr_t)(x); \
> +} \
> +)
> +
> #define u64_to_user_ptr(x) ( \
> { \
> typecheck(u64, x); \
> --
> 2.14.3
>
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