Re: [PATCH printk v2 0/2] nbcon irq_work fixes

[Jon Hunter]

Hi John,

On 28/08/2026 15:02, John Ogness wrote:
> Hi,
>
> This is v2 of a series to address some irq_work issues with nbcon.
> Initially motivated as a workaround for hardware-related regressions
> reported [0], it turns out that the workaround is actually a nice
> improvement for nbcon deferred printing in general.
>
> v1 is here [1].
>
> John Ogness
>
> The changes since v1:
>
> - Add a preceding patch to flush the irq_work on nbcon_free(). This
>    pre-existing issue was reported [2] by Sashiko while it was
>    reviewing v1.
>
> [0] https://lore.kernel.org/lkml/f3757a75-0ba1-4558-bf57-f19ab7e59a4c@xxxxxxxxxx
> [1] https://lore.kernel.org/lkml/20260827184750.203521-1-john.ogness@xxxxxxxxxxxxx
> [2] https://sashiko.dev/#/patchset/20260827184750.203521-1-john.ogness%40linutronix.de
>
> John Ogness (2):
>    printk/nbcon: Flush nbcon_irq_work in nbcon_free()
>    printk/nbcon: Change nbcon_irq_work to IRQ_WORK_LAZY
>
>   kernel/printk/nbcon.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)

I have tested these on Tegra and all is working well, so for
the series ...

Tested-by: Jon Hunter <jonathanh@xxxxxxxxxx>

Thanks for fixing this!

Cheers
Jon

--
nvpublic