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| author |   James Morris <james.l.morris@oracle.com> | 2014-11-19 21:32:12 +1100 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2014-11-19 21:32:12 +1100 |
| commit | b10778a00d40b3d9fdaaf5891e802794781ff71c (patch) | |
| tree | 6ba4cbac86eecedc3f30650e7f764ecf00c83898 /fs/cifs/netmisc.c | |
| parent | integrity: do zero padding of the key id (diff) | |
| parent | Linux 3.17 (diff) | |
| download | linux-dev-b10778a00d40b3d9fdaaf5891e802794781ff71c.tar.xz linux-dev-b10778a00d40b3d9fdaaf5891e802794781ff71c.zip | |
Merge commit 'v3.17' into next
Diffstat (limited to 'fs/cifs/netmisc.c')
| -rw-r--r-- | fs/cifs/netmisc.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c index 6834b9c3bec1..b333ff60781d 100644 --- a/fs/cifs/netmisc.c +++ b/fs/cifs/netmisc.c @@ -925,11 +925,23 @@ cifs_NTtimeToUnix(__le64 ntutc) /* BB what about the timezone? BB */ /* Subtract the NTFS time offset, then convert to 1s intervals. */ - u64 t; + s64 t = le64_to_cpu(ntutc) - NTFS_TIME_OFFSET; + + /* + * Unfortunately can not use normal 64 bit division on 32 bit arch, but + * the alternative, do_div, does not work with negative numbers so have + * to special case them + */ + if (t < 0) { + t = -t; + ts.tv_nsec = (long)(do_div(t, 10000000) * 100); + ts.tv_nsec = -ts.tv_nsec; + ts.tv_sec = -t; + } else { + ts.tv_nsec = (long)do_div(t, 10000000) * 100; + ts.tv_sec = t; + } - t = le64_to_cpu(ntutc) - NTFS_TIME_OFFSET; - ts.tv_nsec = do_div(t, 10000000) * 100; - ts.tv_sec = t; return ts; } |