We have grown a number of different implementations of DIV_ROUND_CLOSEST_ULL throughout the kernel. Move the i915 one to kernel.h so that it can be reused.
Cc: Jani Nikula <jani.nikula at linux.intel.com> Cc: David Airlie <airlied at linux.ie> Cc: Guenter Roeck <linux at roeck-us.net> Cc: Andrew Morton <akpm at linux-foundation.org> Acked-by: Daniel Vetter <daniel.vetter at ffwll.ch> Signed-off-by: Javi Merino <javi.merino at arm.com> --- drivers/gpu/drm/i915/intel_drv.h | 3 --- drivers/gpu/drm/i915/intel_panel.c | 1 + include/linux/kernel.h | 12 ++++++++++++ 3 files changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index eef79ccd0b7c..ba243db35840 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -36,9 +36,6 @@ #include <drm/drm_dp_mst_helper.h> #include <drm/drm_rect.h> -#define DIV_ROUND_CLOSEST_ULL(ll, d) \ -({ unsigned long long _tmp = (ll)+(d)/2; do_div(_tmp, d); _tmp; }) - /** * _wait_for - magic (register) wait macro * diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index d8686ce89160..08532d4ffe0a 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -30,6 +30,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include <linux/kernel.h> #include <linux/moduleparam.h> #include "intel_drv.h" diff --git a/include/linux/kernel.h b/include/linux/kernel.h index d6d630d31ef3..3a5b48e52a9e 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -103,6 +103,18 @@ (((__x) - ((__d) / 2)) / (__d)); \ } \ ) +/* + * Same as above but for u64 dividends. divisor must be a 32-bit + * number. + */ +#define DIV_ROUND_CLOSEST_ULL(x, divisor)( \ +{ \ + typeof(divisor) __d = divisor; \ + unsigned long long _tmp = (x) + (__d) / 2; \ + do_div(_tmp, __d); \ + _tmp; \ +} \ +) /* * Multiplies an integer by a fraction, while avoiding unnecessary -- 1.9.1