diff options
| -rw-r--r-- | lib/math/div64.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/math/div64.c b/lib/math/div64.c index 1092f41e878e..4a4b1aa9e6e1 100644 --- a/lib/math/div64.c +++ b/lib/math/div64.c @@ -186,9 +186,6 @@ EXPORT_SYMBOL(iter_div_u64_rem); #ifndef mul_u64_u64_div_u64 u64 mul_u64_u64_div_u64(u64 a, u64 b, u64 d) { - if (ilog2(a) + ilog2(b) <= 62) - return div64_u64(a * b, d); - #if defined(__SIZEOF_INT128__) /* native 64x64=128 bits multiplication */ @@ -212,6 +209,9 @@ u64 mul_u64_u64_div_u64(u64 a, u64 b, u64 d) #endif + if (!n_hi) + return div64_u64(n_lo, d); + if (unlikely(n_hi >= d)) { /* trigger runtime exception if divisor is zero */ if (d == 0) { |