Re: [Xen-devel] xen/arm: uart interrupts handling

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Vijay,

On 05/12/2014 00:46, Vijay Kilari wrote:
 > Yes, this is the behaviour that Iam seeing. In Linux, uart driver
> masks TXI interrupt
> in IMSC if buffer is empty. However in xen, this scenario is not
> handled. This is the reason why cpu does not come out of uart irq
> routine if TX interrupt is raised but buffer is empty.
>
> I have added below changes to fix this on top of your suggested change
Can you send a formal patch (commit message + signed-off-by)?

Also, you will have to make sure you don't break the other serial drivers.

Regards,

--
Julien Grall

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