The expression "(long)(read_c0_count() - cnt)" never be a negative value on 64-bit kernel. Cast to "int" before comparison. Signed-off-by: Atsushi Nemoto <anemo@xxxxxxxxxxxxx> --- arch/mips/kernel/cevt-r4k.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c index ae2984f..47c8c0e 100644 --- a/arch/mips/kernel/cevt-r4k.c +++ b/arch/mips/kernel/cevt-r4k.c @@ -28,7 +28,7 @@ static int mips_next_event(unsigned long delta, cnt = read_c0_count(); cnt += delta; write_c0_compare(cnt); - res = ((long)(read_c0_count() - cnt ) > 0) ? -ETIME : 0; + res = ((int)(read_c0_count() - cnt) > 0) ? -ETIME : 0; #ifdef CONFIG_MIPS_MT_SMTC evpe(vpflags); local_irq_restore(flags); @@ -196,7 +196,7 @@ static int c0_compare_int_usable(void) cnt += delta; write_c0_compare(cnt); - while ((long)(read_c0_count() - cnt) <= 0) + while ((int)(read_c0_count() - cnt) <= 0) ; /* Wait for expiry */ if (!c0_compare_int_pending())
