Re: [PATCH] gpiolib: demote the hogging log messages to debug

[Bartosz Golaszewski]

On Fri, Jun 9, 2023 at 3:47 PM Rob Herring <robh+dt@xxxxxxxxxx> wrote:
>
> On Mon, Jun 5, 2023 at 6:53 AM Bartosz Golaszewski <brgl@xxxxxxxx> wrote:
> >
> > From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
> >
> > Drivers should be silent when they work correctly. There's no reason to
> > emit info messages when GPIO lines are hogged. Demote the message to
> > debug.
> >
> > Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
> > Suggested-by: Kent Gibson <warthog618@xxxxxxxxx>
> > ---
> >  drivers/gpio/gpiolib.c |  2 +-
> >  drivers/of/unittest.c  | 16 ++++++++--------
> >  2 files changed, 9 insertions(+), 9 deletions(-)
> >
> > diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
> > index a7220e04a93e..e4515bda8915 100644
> > --- a/drivers/gpio/gpiolib.c
> > +++ b/drivers/gpio/gpiolib.c
> > @@ -4243,7 +4243,7 @@ int gpiod_hog(struct gpio_desc *desc, const char *name,
> >         /* Mark GPIO as hogged so it can be identified and removed later */
> >         set_bit(FLAG_IS_HOGGED, &desc->flags);
> >
> > -       gpiod_info(desc, "hogged as %s%s\n",
> > +       gpiod_dbg(desc, "hogged as %s%s\n",
> >                 (dflags & GPIOD_FLAGS_BIT_DIR_OUT) ? "output" : "input",
> >                 (dflags & GPIOD_FLAGS_BIT_DIR_OUT) ?
> >                   (dflags & GPIOD_FLAGS_BIT_DIR_VAL) ? "/high" : "/low" : "");
> > diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
> > index 2191c0136531..0060334a98a7 100644
> > --- a/drivers/of/unittest.c
> > +++ b/drivers/of/unittest.c
> > @@ -1849,19 +1849,19 @@ static void __init of_unittest_overlay_gpio(void)
> >          * driver is registered
> >          */
> >
> > -       EXPECT_BEGIN(KERN_INFO,
> > +       EXPECT_BEGIN(KERN_DEBUG,
> >                      "gpio-<<int>> (line-B-input): hogged as input\n");
>
> As debug messages are normally off, I think you can just remove these.
>
> Rob

I will send a follow-up.

Bart