Re: [PATCH] kernel spams syslog every 10 sec with w1 debug

Re: [PATCH] kernel spams syslog every 10 sec with w1 debug

[Andi Kleen]

Olaf Hering <olh@suse.de> writes:

> Bug 104020 - kernel spams syslog every 10 sec with: w1_driver w1_bus_master1: No devices present on the wire.
> 
> After installing 10.0 B1, I found this in my syslog: 
> Aug 10 23:40:06 linux kernel: w1_driver w1_bus_master1: No devices present on the wire. 
> Aug 10 23:40:16 linux kernel: w1_driver w1_bus_master1: No devices present on the wire. 

More interesting is why this thing is running at all.
It shouldn't. 

-Andi

Re: [PATCH] kernel spams syslog every 10 sec with w1 debug

[Olaf Hering]

 On Fri, Aug 12, Andi Kleen wrote:

> Olaf Hering <olh@suse.de> writes:
> 
> > Bug 104020 - kernel spams syslog every 10 sec with: w1_driver w1_bus_master1: No devices present on the wire.
> > 
> > After installing 10.0 B1, I found this in my syslog: 
> > Aug 10 23:40:06 linux kernel: w1_driver w1_bus_master1: No devices present on the wire. 
> > Aug 10 23:40:16 linux kernel: w1_driver w1_bus_master1: No devices present on the wire. 
> 
> More interesting is why this thing is running at all.
> It shouldn't. 

Maybe these cables can be plugged in at any time and the driver is
polling. Havent looked how things work.

Re: [PATCH] kernel spams syslog every 10 sec with w1 debug

[Dave Jones]

On Fri, Aug 12, 2005 at 05:38:37PM +0200, Andi Kleen wrote:
 > Olaf Hering <olh@suse.de> writes:
 > 
 > > Bug 104020 - kernel spams syslog every 10 sec with: w1_driver w1_bus_master1: No devices present on the wire.
 > > 
 > > After installing 10.0 B1, I found this in my syslog: 
 > > Aug 10 23:40:06 linux kernel: w1_driver w1_bus_master1: No devices present on the wire. 
 > > Aug 10 23:40:16 linux kernel: w1_driver w1_bus_master1: No devices present on the wire. 
 > 
 > More interesting is why this thing is running at all.
 > It shouldn't. 

Doesnt that get loaded if there's a Matrox card present ?
(I am completely guessing here, so could be way off base).

		Dave

Re: [PATCH] kernel spams syslog every 10 sec with w1 debug

[Hans-Peter Jansen]

Am Freitag, 12. August 2005 18:00 schrieb Dave Jones:
> On Fri, Aug 12, 2005 at 05:38:37PM +0200, Andi Kleen wrote:
>  > Olaf Hering <olh@suse.de> writes:
>  > > Bug 104020 - kernel spams syslog every 10 sec with: w1_driver
>  > > w1_bus_master1: No devices present on the wire.
>  > >
>  > > After installing 10.0 B1, I found this in my syslog:
>  > > Aug 10 23:40:06 linux kernel: w1_driver w1_bus_master1: No
>  > > devices present on the wire. Aug 10 23:40:16 linux kernel:
>  > > w1_driver w1_bus_master1: No devices present on the wire.
>  >
>  > More interesting is why this thing is running at all.
>  > It shouldn't.
>
> Doesnt that get loaded if there's a Matrox card present ?
> (I am completely guessing here, so could be way off base).

Guess matched! Most of my systems run these (should I say unfortunately 
8|)

And sorry for the late reply. I didn't notice, that my report leaked 
into lkml.. ;-)

Pete

[PATCH] kernel spams syslog every 10 sec with w1 debug

[Olaf Hering]

Bug 104020 - kernel spams syslog every 10 sec with: w1_driver w1_bus_master1: No devices present on the wire.

After installing 10.0 B1, I found this in my syslog: 
Aug 10 23:40:06 linux kernel: w1_driver w1_bus_master1: No devices present on the wire. 
Aug 10 23:40:16 linux kernel: w1_driver w1_bus_master1: No devices present on the wire. 

Signed-off-by: Olaf Hering <olh@suse.de>

 drivers/w1/w1.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletion(-)

Index: linux-2.6.13-rc6-aes/drivers/w1/w1.c
===================================================================
--- linux-2.6.13-rc6-aes.orig/drivers/w1/w1.c
+++ linux-2.6.13-rc6-aes/drivers/w1/w1.c
@@ -593,7 +593,8 @@ void w1_search(struct w1_master *dev, w1
 		 * Return 0 - device(s) present, 1 - no devices present.
 		 */
 		if (w1_reset_bus(dev)) {
-			dev_info(&dev->dev, "No devices present on the wire.\n");
+			if (printk_ratelimit())
+				dev_debug(&dev->dev, "No devices present on the wire.\n");
 			break;
 		}
 

Re: [PATCH] kernel spams syslog every 10 sec with w1 debug

[Evgeniy Polyakov]

On Fri, Aug 12, 2005 at 05:07:48PM +0200, Olaf Hering (olh@suse.de) wrote:
> 
> Bug 104020 - kernel spams syslog every 10 sec with: w1_driver w1_bus_master1: No devices present on the wire.
> 
> After installing 10.0 B1, I found this in my syslog: 
> Aug 10 23:40:06 linux kernel: w1_driver w1_bus_master1: No devices present on the wire. 
> Aug 10 23:40:16 linux kernel: w1_driver w1_bus_master1: No devices present on the wire. 
> 
> Signed-off-by: Olaf Hering <olh@suse.de>
> 
>  drivers/w1/w1.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletion(-)
> 
> Index: linux-2.6.13-rc6-aes/drivers/w1/w1.c
> ===================================================================
> --- linux-2.6.13-rc6-aes.orig/drivers/w1/w1.c
> +++ linux-2.6.13-rc6-aes/drivers/w1/w1.c
> @@ -593,7 +593,8 @@ void w1_search(struct w1_master *dev, w1
>  		 * Return 0 - device(s) present, 1 - no devices present.
>  		 */
>  		if (w1_reset_bus(dev)) {
> -			dev_info(&dev->dev, "No devices present on the wire.\n");
> +			if (printk_ratelimit())
> +				dev_debug(&dev->dev, "No devices present on the wire.\n");
>  			break;
>  		}

I would even just replace it with dev_dbg(),
since default 10 seconds timeout is more than printk_ratelimit_jiffies.
I will add such a patch into w1 queue.

Thank you.

-- 
	Evgeniy Polyakov