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From: Benjamin LaHaise <>
Subject: [PATCH] serial: remove "too much work for irq" printk
Date: Sat, 12 Jan 2008 15:15:43 -0500	[thread overview]
Message-ID: <> (raw)

When using kvm with a serial console, the serial driver will print out 
"too much work for irq4" on any heavy activity (ie vi on a file repainting 
the terminal).  This message is entirely spurious, as output continues to 
work fine.  Remove the message as it corrupts screen output and is far too 
easy to trigger.


Signed-off-by: Benjamin LaHaise <>
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index f94109c..030b8b5 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -1493,12 +1493,8 @@ static irqreturn_t serial8250_interrupt(int irq, void *dev_id)
 		l = l->next;
-		if (l == i->head && pass_counter++ > PASS_LIMIT) {
-			/* If we hit this, we're dead. */
-			printk(KERN_ERR "serial8250: too much work for "
-				"irq%d\n", irq);
+		if (l == i->head && pass_counter++ > PASS_LIMIT)
-		}
 	} while (l != end);

             reply	other threads:[~2008-01-12 20:16 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-12 20:15 Benjamin LaHaise [this message]
2008-01-12 20:21 ` [PATCH] serial: remove "too much work for irq" printk Christoph Hellwig
2008-01-12 21:24 ` Alan Cox
2008-01-12 21:39   ` H. Peter Anvin
2008-01-12 21:42     ` Alan Cox
2008-01-12 21:58       ` H. Peter Anvin
2008-01-13 22:03   ` Pavel Machek

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