linux-kernel - Re: [PATCH] powernow-k8: Fixup missing

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Date:	Wed, 18 Jul 2012 21:50:51 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Borislav Petkov <bp@...64.org>
Cc:	cpufreq@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Borislav Petkov <borislav.petkov@....com>
Subject: Re: [PATCH] powernow-k8: Fixup missing _PSS objects message

On Wednesday, July 18, 2012, Borislav Petkov wrote:
> From: Borislav Petkov <borislav.petkov@....com>
> 
> _PSS objects can also be missing if Cool'N'Quiet is disabled in the
> BIOS. Add that to the FW_BUG message for the user to try before updating
> her BIOS. Fix formatting while at it.
> 
> Acked-by: Mark Langsdorf <mark.langsdorf@....com>
> Signed-off-by: Borislav Petkov <borislav.petkov@....com>

I will take this, but it's kind of too late for v3.6.

Thanks,
Rafael


> ---
>  drivers/cpufreq/powernow-k8.c | 11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c
> index c0e816468e30..33f17c4a1342 100644
> --- a/drivers/cpufreq/powernow-k8.c
> +++ b/drivers/cpufreq/powernow-k8.c
> @@ -1265,12 +1265,15 @@ static void __cpuinit powernowk8_cpu_init_on_cpu(void *_init_on_cpu)
>  	init_on_cpu->rc = 0;
>  }
>  
> +static const char missing_pss_msg[] =
> +	KERN_ERR
> +	FW_BUG PFX "No compatible ACPI _PSS objects found.\n"
> +	FW_BUG PFX "First, make sure Cool'N'Quiet is enabled in the BIOS.\n"
> +	FW_BUG PFX "If that doesn't help, try upgrading your BIOS.\n";
> +
>  /* per CPU init entry point to the driver */
>  static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
>  {
> -	static const char ACPI_PSS_BIOS_BUG_MSG[] =
> -		KERN_ERR FW_BUG PFX "No compatible ACPI _PSS objects found.\n"
> -		FW_BUG PFX "Try again with latest BIOS.\n";
>  	struct powernow_k8_data *data;
>  	struct init_on_cpu init_on_cpu;
>  	int rc;
> @@ -1298,7 +1301,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
>  		 * an UP version, and is deprecated by AMD.
>  		 */
>  		if (num_online_cpus() != 1) {
> -			printk_once(ACPI_PSS_BIOS_BUG_MSG);
> +			printk_once(missing_pss_msg);
>  			goto err_out;
>  		}
>  		if (pol->cpu != 0) {
> 

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