On Fri, Dec 23, 2022 at 01:23:53PM +0900, Dominique Martinet wrote:
> From: Indan Zupancic <Indan.Zupancic@xxxxxxxxxxxx>
>
> [ Upstream commit 401fb66a355eb0f22096cf26864324f8e63c7d78 ]
>
> If an irq is pending when devm_request_irq() is called, the irq
> handler will cause a NULL pointer access because initialisation
> is not done yet.
>
> Fixes: 9d7ee0e28da59 ("tty: serial: lpuart: avoid report NULL interrupt")
> Cc: stable <stable@xxxxxxxxxxxxxxx>
> Signed-off-by: Indan Zupancic <Indan.Zupancic@xxxxxxxxxxxx>
> Link: https://lore.kernel.org/r/20220505114750.45423-1-Indan.Zupancic@xxxxxxxxxxxx
> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> [5.10 did not have lpuart_global_reset or anything after
> uart_add_one_port(), so add the remove call in cleanup manually]
> Signed-off-by: Dominique Martinet <dominique.martinet@xxxxxxxxxxxxxxxxx>
> ---
> This was originally intended as a prerequirement to backport the patch
> submitted in [1] for 5.10, but even with that part of the patch gone it
> makes sense as a fix on its own.
>
> [1] https://lkml.kernel.org/r/20221222114414.1886632-1-linux@xxxxxxxxxxxxxxxxxx
>
> drivers/tty/serial/fsl_lpuart.c | 18 ++++++++++--------
> 1 file changed, 10 insertions(+), 8 deletions(-)
>
Both now queued up, thanks.
greg k-h
