Re: [PATCH] Remove ambiguous logging for "Unsupported brightness interface"

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On Wed, 27 Jan 2016, Joe Perches wrote:
> On Wed, 2016-01-27 at 22:14 +0000, Eric Curtin wrote:
> > Message gets logged on machines that are well supported.
> > 
> > Signed-off-by: Eric Curtin <ericcurtin17@xxxxxxxxx>
> > ---
> >  drivers/platform/x86/thinkpad_acpi.c | 1 -
> >  1 file changed, 1 deletion(-)
> > 
> > diff --git a/drivers/platform/x86/thinkpad_acpi.c
> > b/drivers/platform/x86/thinkpad_acpi.c
> > index a268a7a..4eb41aa 100644
> > --- a/drivers/platform/x86/thinkpad_acpi.c
> > +++ b/drivers/platform/x86/thinkpad_acpi.c
> > @@ -6661,7 +6661,6 @@ static void __init
> > tpacpi_detect_brightness_capabilities(void)
> >                 pr_info("detected a 8-level brightness capable
> > ThinkPad\n");
> >                 break;
> >         default:
> > -               pr_info("Unsupported brightness interface\n");
> >                 tp_features.bright_unkfw = 1;
> >                 bright_maxlvl = b - 1;
> >         }
> 
> Perhaps this should be something like this instead:
> ---
>  drivers/platform/x86/thinkpad_acpi.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
> index a268a7a..bd12c71 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -6653,18 +6653,16 @@ static void __init tpacpi_detect_brightness_capabilities(void)
>  	switch (b) {
>  	case 16:
>  		bright_maxlvl = 15;
> -		pr_info("detected a 16-level brightness capable ThinkPad\n");
>  		break;
>  	case 8:
>  	case 0:
>  		bright_maxlvl = 7;
> -		pr_info("detected a 8-level brightness capable ThinkPad\n");
>  		break;
>  	default:
> -		pr_info("Unsupported brightness interface\n");
>  		tp_features.bright_unkfw = 1;
>  		bright_maxlvl = b - 1;
>  	}
> +	pr_info("detected %u brightness levels\n", bright_maxlvl + 1);
>  }

This can be made pr_debug, since we're touching it...

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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