From 08e5c91a299ae84b3397e0b50d0da57eaa92dd53 Mon Sep 17 00:00:00 2001
From: =?utf8?q?=E6=9F=AF=E9=A3=9E=E9=9B=84?= <kfx@rock-chips.com>
Date: Wed, 12 May 2010 02:19:45 +0000
Subject: [PATCH] mod i2c

---
 drivers/i2c/busses/i2c-rk2818.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-rk2818.c b/drivers/i2c/busses/i2c-rk2818.c
index 32f28c449bf2..6abc52fce7c7 100755
--- a/drivers/i2c/busses/i2c-rk2818.c
+++ b/drivers/i2c/busses/i2c-rk2818.c
@@ -246,13 +246,15 @@ static int rk2818_wait_while_busy(struct rk2818_i2c_data *i2c)
 {
 	unsigned long timeout = jiffies + RK2818_I2C_TIMEOUT;
 	unsigned long lsr;
+	unsigned int time = 10;
 	dev_dbg(i2c->dev,"wait_while_busy");
 	while(!time_after(jiffies, timeout))
 	{
 		lsr = readl(i2c->regs + I2C_LSR);
 		if(!(lsr & I2C_LSR_BUSY))
 			return 0;
-		udelay(100);
+		udelay(time);
+		time *= 2;
 	}
 	return -ETIMEDOUT;
 }
-- 
2.34.1