Re: [PATCH v1 2/5] ACPI: battery: Clean up printing messages

[Joe Perches]

On Mon, 2021-02-01 at 19:44 +0100, Rafael J. Wysocki wrote:
> On Mon, Feb 1, 2021 at 7:37 PM Joe Perches <joe@xxxxxxxxxxx> wrote:
> > 
> > On Mon, 2021-02-01 at 19:16 +0100, Rafael J. Wysocki wrote:
> > > From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> > > 
> > > Replace the ACPI_DEBUG_PRINT() and ACPI_EXCEPTION() instances
> > > in battery.c with acpi_handle_debug() and acpi_handle_info() calls,
> > > respectively, drop the _COMPONENT and ACPI_MODULE_NAME() definitions
> > > that are not used any more, drop the no longer needed
> > > ACPI_BATTERY_COMPONENT definition from the headers and update the
> > > documentation accordingly.
> > > 
> > > While at it, update the pr_fmt() definition and drop the unneeded
> > > PREFIX sybmbol definition from battery.c.
> > []
> > > --- linux-pm.orig/drivers/acpi/battery.c
> > []
> > > @@ -466,7 +460,8 @@ static int extract_package(struct acpi_b
> > >  static int acpi_battery_get_status(struct acpi_battery *battery)
> > >  {
> > >       if (acpi_bus_get_status(battery->device)) {
> > > -             ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA"));
> > > +             acpi_handle_info(battery->device->handle,
> > > +                              "_STA evaluation failed\n");
> > 
> > I believe this changes the logging level from KERN_ERR to KERN_INFO.
> > 
> > Perhaps this and others should instead use acpi_handle_err()
> 
> Actually, these log level changes, because the messages in question
> are not very urgent.
> 
> Something doesn't work and it's kind of good to know that, but there's
> not much that can be done about it.

That more argues for removal of KERN_<LEVEL> filtering.

I fail to see how difficult it is to change these to the existing
KERN_<LEVEL> using a simple acpi_handle_info() -> acpi_handle_err()
substitution where appropriate.

At a minimum, the commit message should note the KERN_<LEVEL> changes.