LP#280821 -- SMP deadlocks in serial
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, after finally realizing patch2 reverts the dagerous parts of patch1
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