Re: [PATCH] serial: 8250: Add missing wakeup event reporting

[Florian Fainelli]

On 4/14/2023 12:19 AM, Greg Kroah-Hartman wrote:
> On Thu, Apr 13, 2023 at 02:39:54PM -0700, Florian Fainelli wrote:
> > An 8250 UART configured as a wake-up source would not have reported
> > itself through sysfs as being the source of wake-up, correct that.
> >
> > Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
> > ---
> >   drivers/tty/serial/8250/8250_port.c | 4 ++++
> >   1 file changed, 4 insertions(+)
>
> What commit does this fix?  Is it needed to go to stable kernel(s)?

That would be b3b708fa2780cd2b5d8266a8f0c3a1cab364d4d2 ("wake up from a 
serial port").

I do not know of standard Linux distribution user-space relying on the 
wake-up counts from sysfs, though I certainly do care.

The patch I submitted should backport fine all the way down to 4.14 
where irqd_is_wakeup_set is available. Do you want me to submit a v2 
with that Fixes tag?
--
Florian