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

[Marek Vasut]

On 12/15/22 17:52, Valentin CARON wrote:
> Hi Marek,

Hi,

> I test your patch with a loop-back test between usart3 and uart7 on 
> STM32MP157C-DK2. It
> shows a speed transfer diminution (about -1,5%), some locks during 
> transfer, RT throttling etc...
> (I use lszrz tool).
> 
> But finally, I think your patch is the best solution that we have.
> Other solutions always throws an RT exception on a spin_lock.

I just sent a V2, so let's see how that works.

Thanks for testing!