[U-Boot-Users] [PATCH 2/3][MIPS] lib_mips/time.c: Fix udelay

[Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>]

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 <skuribay@ruby.dti.ne.jp>
---

 lib_mips/time.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)


diff --git a/lib_mips/time.c b/lib_mips/time.c
index f03f023..154d792 100644
--- a/lib_mips/time.c
+++ b/lib_mips/time.c
@@ -51,13 +51,13 @@ void set_timer(ulong t)
 	write_32bit_cp0_register(CP0_COUNT, t);
 }
 
-void udelay (unsigned long usec)
+void udelay(unsigned long usec)
 {
 	ulong tmo;
-	ulong start = get_timer(0);
+	unsigned int start = read_32bit_cp0_register(CP0_COUNT);
 
-	tmo = usec * (CFG_HZ / 1000000);
-	while ((ulong)((read_32bit_cp0_register(CP0_COUNT) - start)) < tmo)
+	tmo = start + (usec * (CONFIG_MIPS_TIMER_FREQ / 1000000));
+	while ((ulong)(tmo - read_32bit_cp0_register(CP0_COUNT)) < 0x7fffffff)
 		/*NOP*/;
 }