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| author | David Howells <dhowells@redhat.com> | 2008-02-25 18:31:57 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-03-09 08:42:57 +0100 |
| commit | e48af19f56eb47a1f908ee8f16df9d246f955b21 (patch) | |
| tree | 39a6769d80f125f6cfd4721a900e4b897ea15fbb /kernel/time | |
| parent | x86_64: make ptrace always sign-extend orig_ax to 64 bits (diff) | |
| download | linux-e48af19f56eb47a1f908ee8f16df9d246f955b21.tar.xz linux-e48af19f56eb47a1f908ee8f16df9d246f955b21.zip | |
ntp: use unsigned input for do_div()
The kernel NTP code shouldn't hand 64-bit *signed* values to do_div(). Make it
instead hand 64-bit unsigned values. This gets rid of a couple of warnings.
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/ntp.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index c88b5910e7ab..d4bca927f715 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -342,14 +342,16 @@ int do_adjtimex(struct timex *txc) freq_adj = shift_right(freq_adj, time_constant * 2 + (SHIFT_PLL + 2) * 2 - SHIFT_NSEC); if (mtemp >= MINSEC && (time_status & STA_FLL || mtemp > MAXSEC)) { + u64 utemp64; temp64 = time_offset << (SHIFT_NSEC - SHIFT_FLL); if (time_offset < 0) { - temp64 = -temp64; - do_div(temp64, mtemp); - freq_adj -= temp64; + utemp64 = -temp64; + do_div(utemp64, mtemp); + freq_adj -= utemp64; } else { - do_div(temp64, mtemp); - freq_adj += temp64; + utemp64 = temp64; + do_div(utemp64, mtemp); + freq_adj += utemp64; } } freq_adj += time_freq; |