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authorDavid Howells <dhowells@redhat.com>2008-02-25 18:31:57 +0100
committerThomas Gleixner <tglx@linutronix.de>2008-03-09 08:42:57 +0100
commite48af19f56eb47a1f908ee8f16df9d246f955b21 (patch)
tree39a6769d80f125f6cfd4721a900e4b897ea15fbb /kernel
parent84c6f6046c5a2189160a8f0dca8b90427bf690ea (diff)
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')
-rw-r--r--kernel/time/ntp.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index c88b5910e7a..d4bca927f71 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;