[PATCH 0/2] [Hardy SRU] LP#280821 -- SMP deadlocks in serial

[Tim Gardner]

Andy Whitcroft wrote:
> We have reports of SMP deadlocks occuring in the serial driver, which
> exposes itself by producing serial timeouts.  These should be fixed
> by the two mainline commits below (copies of which follow this email).
> 
> This is fixed in mainline as included in Intrepid and later.  Therefore
> proposing these for SRU to Hardy, subject to testing by the bug reporter.
> 
> -apw
> 
> Anton Vorontsov (1):
>   serial: 8250: fix shared interrupts issues with SMP and RT kernels
> 
> Borislav Petkov (1):
>   8250.c: port.lock is irq-safe
> 
>  drivers/serial/8250.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> 

ACK - I checked Dapper and Gutsy for the same issue, but they appear to
correctly use irqsave/restore.

rtg
-- 
Tim Gardner tim.gardner at canonical.com