commit 9db992ae115c58dc457bc2b1e6fad03252552747
Author: André Goddard Rosa <andre.goddard@gmail.com>
Date:   Wed May 27 10:22:55 2009 -0300

    usbnet: ratelimit warning messages invoked from callback handler
    
    Warning messages coming from rtl8150 driver can flood the console
    and make a DTV/set-top-box unable to decode video/audio frames.
    
    'Pegasus' driver handles this situation similarly, preventing this
    from happening there.
    
    It happens with a low cost BCM MIPS embedded platform, whenever
    timeout errors were coming from usbnet device, making platform
    unusable for viewer watching.
    
    Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>

diff --git a/drivers/net/usb/rtl8150.c b/drivers/net/usb/rtl8150.c
index f9fb454..fcc6fa0 100644
--- a/drivers/net/usb/rtl8150.c
+++ b/drivers/net/usb/rtl8150.c
@@ -221,7 +221,8 @@ static void ctrl_callback(struct urb *urb)
 	case -ENOENT:
 		break;
 	default:
-		dev_warn(&urb->dev->dev, "ctrl urb status %d\n", status);
+		if (printk_ratelimit())
+			dev_warn(&urb->dev->dev, "ctrl urb status %d\n", status);
 	}
 	dev = urb->context;
 	clear_bit(RX_REG_SET, &dev->flags);
@@ -442,10 +443,12 @@ static void read_bulk_callback(struct urb *urb)
 	case -ENOENT:
 		return;	/* the urb is in unlink state */
 	case -ETIME:
-		dev_warn(&urb->dev->dev, "may be reset is needed?..\n");
+		if (printk_ratelimit())
+			dev_warn(&urb->dev->dev, "may be reset is needed?..\n");
 		goto goon;
 	default:
-		dev_warn(&urb->dev->dev, "Rx status %d\n", status);
+		if (printk_ratelimit())
+			dev_warn(&urb->dev->dev, "Rx status %d\n", status);
 		goto goon;
 	}