From 199e4f657c8af42efe3fb3ba1d1104eb6bb28c25 Mon Sep 17 00:00:00 2001 From: Shinya Kuribayashi Date: Thu, 5 Jun 2008 22:29:00 +0900 Subject: [PATCH] [MIPS] lib_mips/time.c: Fix udelay What we have to do is just to wait for given micro-seconds. No need to take into account current time, get_timer and CFG_HZ. Signed-off-by: Shinya Kuribayashi --- lib_mips/time.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/lib_mips/time.c b/lib_mips/time.c index 2c696b709d..fe365303b4 100644 --- a/lib_mips/time.c +++ b/lib_mips/time.c @@ -51,13 +51,12 @@ void set_timer(ulong t) write_c0_count(t); } -void udelay (unsigned long usec) +void udelay(unsigned long usec) { - ulong tmo; - ulong start = get_timer(0); + unsigned int tmo; - tmo = usec * (CFG_HZ / 1000000); - while ((ulong)((read_c0_count() - start)) < tmo) + tmo = read_c0_count() + (usec * (CFG_MIPS_TIMER_FREQ / 1000000)); + while ((tmo - read_c0_count()) < 0x7fffffff) /*NOP*/; } -- 2.39.5