diff options
| -rw-r--r-- | lib/div64.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/lib/div64.c b/lib/div64.c index c3d7655cdfb5..74f0c8cb4031 100644 --- a/lib/div64.c +++ b/lib/div64.c @@ -61,20 +61,18 @@ EXPORT_SYMBOL(__div64_32); /* 64bit divisor, dividend and result. dynamic precision */ uint64_t div64_64(uint64_t dividend, uint64_t divisor) { - uint32_t d = divisor; + uint32_t high, d; - if (divisor > 0xffffffffULL) { - unsigned int shift = fls(divisor >> 32); + high = divisor >> 32; + if (high) { + unsigned int shift = fls(high); d = divisor >> shift; dividend >>= shift; - } + } else + d = divisor; - /* avoid 64 bit division if possible */ - if (dividend >> 32) - do_div(dividend, d); - else - dividend = (uint32_t) dividend / d; + do_div(dividend, d); return dividend; } |