[PATCH] tty: serial: samsung_tty: Fix suspend/resume on S5L

[Greg Kroah-Hartman]

On Mon, May 02, 2022 at 06:25:05PM +0900, Hector Martin wrote:
> We were restoring the IRQ masks then clearing them again, because
> ucon_mask wasn't set properly. Adding that makes suspend/resume
> work as intended.
> 
> Signed-off-by: Hector Martin <marcan at marcan.st>
> ---
>  drivers/tty/serial/samsung_tty.c | 1 +
>  include/linux/serial_s3c.h       | 3 +++
>  2 files changed, 4 insertions(+)

Does this fix a specific older commit?

And should it be backported to older stable kernels?

thanks,

greg k-h