[PATCH] serial: stm32: Move hard IRQ handling to threaded interrupt context

[Marek Vasut]

On 12/8/22 11:18, Valentin CARON wrote:
> Hi Marek,

Hi,

> I've got a patch in the same spirit in downstream.
> The test campaign reveals performance issues with this patch.
> 
> In fact, hard IRQ have been introduced in stm32-usart driver to solve 
> performance issues due to short FIFO size (16 bytes).
> 
> We are currently testing another patch, similar as your RFC proposition, 
> for RT context.
> But results are not ready yet. We can wait them before merging this big 
> change into driver ?

Can you post your patch as an RFC so others can test as well ?