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drm/i915: Use mul_u32_u32() more

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We have a lot of '(u64)foo * bar' everywhere. Replace with
mul_u32_u32() to avoid gcc failing to use a regular 32x32->64
multiply for this.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190408152702.4153-1-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Ville Syrjälä
2019-04-08 18:27:01 +03:00
parent b7ffc4a839
commit d492a29d8c
4 changed files with 11 additions and 11 deletions
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6
drivers/gpu/drm/i915/i915_fixed.h
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@@ -71,7 +71,7 @@ static inline u32 mul_round_up_u32_fixed16(u32 val, uint_fixed_16_16_t mul)
{
u64 tmp;
tmp = (u64)val * mul.val;
tmp = mul_u32_u32(val, mul.val);
tmp = DIV_ROUND_UP_ULL(tmp, 1 << 16);
WARN_ON(tmp > U32_MAX);
@@ -83,7 +83,7 @@ static inline uint_fixed_16_16_t mul_fixed16(uint_fixed_16_16_t val,
{
u64 tmp;
tmp = (u64)val.val * mul.val;
tmp = mul_u32_u32(val.val, mul.val);
tmp = tmp >> 16;
return clamp_u64_to_fixed16(tmp);
@@ -114,7 +114,7 @@ static inline uint_fixed_16_16_t mul_u32_fixed16(u32 val, uint_fixed_16_16_t mul
{
u64 tmp;
tmp = (u64)val * mul.val;
tmp = mul_u32_u32(val, mul.val);
return clamp_u64_to_fixed16(tmp);
}