Re: mutex_lock_slowpath warning using mxser tty driver (input/outputerror)

[Jiri Slaby]

On 04/02/2009 08:44 PM, Alan Cox wrote:
>> It appears to want to lock a mutex in interrupt context, something
>> that's a definite no-no.
>>
>> CCed the folks who might know a thing or two about the driver.
> 
> Moxa is not a USB driver so the USB trace at the end makes no sense at
> all.

Yes, unreliable stack entries, but echo_set_canon_col is called from irq
context and locks mutex.
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