ag71xx: replace delay with sleep calls

I don't see that we're in an atomic context so there's no need to
busy-wait. Therefore replace the delay with sleep calls.
See also Documentation/timers/timers-howto.txt. It states:
"In general, use of mdelay is discouraged and code should
be refactored to allow for the use of msleep."

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>

SVN-Revision: 43539

target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c

@@ -445,7 +445,7 @@ static int __ar7240sw_reg_wait(struct mii_bus *mii, u32 reg, u32 mask, u32 val,
 		if ((t & mask) == val)
 			return 0;
 
-		msleep(1);
+		usleep_range(1000, 2000);
 	}
 
 	return -ETIMEDOUT;
@@ -654,7 +654,7 @@ static int ar7240sw_reset(struct ar7240sw *as)
 		ar7240sw_disable_port(as, i);
 
 	/* Wait for transmit queues to drain. */
-	msleep(2);
+	usleep_range(2000, 3000);
 
 	/* Reset the switch. */
 	ar7240sw_reg_write(mii, AR7240_REG_MASK_CTRL,

target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c

@@ -470,18 +470,18 @@ static void ag71xx_hw_init(struct ag71xx *ag)
 		reset_mask &= ~(AR71XX_RESET_GE0_PHY | AR71XX_RESET_GE1_PHY);
 
 		ath79_device_reset_set(reset_phy);
-		mdelay(50);
+		msleep(50);
 		ath79_device_reset_clear(reset_phy);
-		mdelay(200);
+		msleep(200);
 	}
 
 	ag71xx_sb(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_SR);
 	udelay(20);
 
 	ath79_device_reset_set(reset_mask);
-	mdelay(100);
+	msleep(100);
 	ath79_device_reset_clear(reset_mask);
-	mdelay(200);
+	msleep(200);
 
 	ag71xx_hw_setup(ag);