Re: [PATCH 1/2 V2] kaweth: Fix locking to be SMP-safe

[Larry Finger]

Oliver Neukum wrote:
> Am Dienstag 31 März 2009 20:45:49 schrieb Larry Finger:
>> On an SMP system, the following message is printed. The patch below gets
>> fixes the problem.
> 
> Are you sure it is never called with disabled interrupts?

I think not, but all I really know is that the change from spin_lock() to
spin_lock_irq() makes the errors go away.

I checked a number of drivers to see what their ndo_start_xmit routines do. Most
use spin_lock_irq(), but some do no locking.

I tried removing the locking, but that resulted in a stall even when I bypassed
the faulty router.

Larry
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