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

From Joe Perches <joe@perches.com>
Newsgroups linux.kernel
Subject Re: [PATCH] Remove ambiguous logging for "Unsupported brightness interface"
Date 2016-01-28 00:30 +0100
Message-ID <qVHHc-2KP-19@gated-at.bofh.it> (permalink)
References <qVGBt-20k-41@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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@gmail.com>
> ---
>  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);
 }
 
 static int __init brightness_init(struct ibm_init_struct *iibm)

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Thread

[PATCH] Remove ambiguous logging for "Unsupported brightness interface" Eric Curtin <ericcurtin17@gmail.com> - 2016-01-27 23:20 +0100
  Re: [PATCH] Remove ambiguous logging for "Unsupported brightness  interface" Joe Perches <joe@perches.com> - 2016-01-28 00:30 +0100
    Re: [PATCH] Remove ambiguous logging for "Unsupported brightness interface" Eric Curtin <ericcurtin17@gmail.com> - 2016-01-28 01:40 +0100
      Re: [PATCH] Remove ambiguous logging for "Unsupported brightness  interface" Joe Perches <joe@perches.com> - 2016-01-28 01:50 +0100
        Re: [PATCH] Remove ambiguous logging for "Unsupported brightness interface" Eric Curtin <ericcurtin17@gmail.com> - 2016-01-28 02:00 +0100
    Re: [PATCH] Remove ambiguous logging for "Unsupported brightness  interface" Henrique de Moraes Holschuh <hmh@hmh.eng.br> - 2016-01-30 13:30 +0100
      Re: [PATCH] Remove ambiguous logging for "Unsupported brightness interface" Eric Curtin <ericcurtin17@gmail.com> - 2016-01-30 18:00 +0100
        Re: [PATCH] Remove ambiguous logging for "Unsupported brightness  interface" Henrique de Moraes Holschuh <hmh@hmh.eng.br> - 2016-01-30 21:00 +0100
        Re: [PATCH] Remove ambiguous logging for "Unsupported brightness  interface" Darren Hart <dvhart@infradead.org> - 2016-02-07 21:20 +0100

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