linux-kernel - Re: [PATCH] platform/x86: amd-pmc: Fix the build error when CONFIG_DEBUG

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Date:   Mon, 11 Oct 2021 15:29:47 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Sanket Goswami <Sanket.Goswami@....com>, Shyam-sundar.S-k@....com,
        mgross@...ux.intel.com
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        Nathan Chancellor <nathan@...nel.org>
Subject: Re: [PATCH] platform/x86: amd-pmc: Fix the build error when
 CONFIG_DEBUG_FS is disable

Hi Sanket,

On 10/8/21 10:34 AM, Sanket Goswami wrote:
> It was reported that when CONFIG_DEBUG_FS is disabled, amd-pmc driver
> ended up in build failure.
> 
> Re-order the routine to solve the problem.
> 
> Fixes: b4a53d6f61eb ("platform/x86: amd-pmc: Export Idlemask values
> based on the APU")
> 
> Reported-by: Nathan Chancellor <nathan@...nel.org>
> Signed-off-by: Sanket Goswami <Sanket.Goswami@....com>

Thank you for your pathc, but this is already fixed by the following (identical)
commit in my for-next branch:

https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/commit/?h=for-next&id=40635cd32f0d83573a558dc30e9ba3469e769249

Regards,

Hans



> ---
>  drivers/platform/x86/amd-pmc.c | 86 +++++++++++++++++-----------------
>  1 file changed, 43 insertions(+), 43 deletions(-)
> 
> diff --git a/drivers/platform/x86/amd-pmc.c b/drivers/platform/x86/amd-pmc.c
> index 91c1f1c6c929..88cded2fe680 100644
> --- a/drivers/platform/x86/amd-pmc.c
> +++ b/drivers/platform/x86/amd-pmc.c
> @@ -155,6 +155,31 @@ struct smu_metrics {
>  	u64 timecondition_notmet_totaltime[SOC_SUBSYSTEM_IP_MAX];
>  } __packed;
>  
> +static int amd_pmc_idlemask_read(struct amd_pmc_dev *pdev, struct device *dev,
> +				 struct seq_file *s)
> +{
> +	u32 val;
> +
> +	switch (pdev->cpu_id) {
> +	case AMD_CPU_ID_CZN:
> +		val = amd_pmc_reg_read(pdev, AMD_PMC_SCRATCH_REG_CZN);
> +		break;
> +	case AMD_CPU_ID_YC:
> +		val = amd_pmc_reg_read(pdev, AMD_PMC_SCRATCH_REG_YC);
> +		break;
> +	default:
> +		return -EINVAL;
> +	}
> +
> +	if (dev)
> +		dev_dbg(pdev->dev, "SMU idlemask s0i3: 0x%x\n", val);
> +
> +	if (s)
> +		seq_printf(s, "SMU idlemask : 0x%x\n", val);
> +
> +	return 0;
> +}
> +
>  #ifdef CONFIG_DEBUG_FS
>  static int smu_fw_info_show(struct seq_file *s, void *unused)
>  {
> @@ -210,49 +235,6 @@ static int s0ix_stats_show(struct seq_file *s, void *unused)
>  }
>  DEFINE_SHOW_ATTRIBUTE(s0ix_stats);
>  
> -static int amd_pmc_get_smu_version(struct amd_pmc_dev *dev)
> -{
> -	int rc;
> -	u32 val;
> -
> -	rc = amd_pmc_send_cmd(dev, 0, &val, SMU_MSG_GETSMUVERSION, 1);
> -	if (rc)
> -		return rc;
> -
> -	dev->major = (val >> 16) & GENMASK(15, 0);
> -	dev->minor = (val >> 8) & GENMASK(7, 0);
> -	dev->rev = (val >> 0) & GENMASK(7, 0);
> -
> -	dev_dbg(dev->dev, "SMU version is %u.%u.%u\n", dev->major, dev->minor, dev->rev);
> -
> -	return 0;
> -}
> -
> -static int amd_pmc_idlemask_read(struct amd_pmc_dev *pdev, struct device *dev,
> -				 struct seq_file *s)
> -{
> -	u32 val;
> -
> -	switch (pdev->cpu_id) {
> -	case AMD_CPU_ID_CZN:
> -		val = amd_pmc_reg_read(pdev, AMD_PMC_SCRATCH_REG_CZN);
> -		break;
> -	case AMD_CPU_ID_YC:
> -		val = amd_pmc_reg_read(pdev, AMD_PMC_SCRATCH_REG_YC);
> -		break;
> -	default:
> -		return -EINVAL;
> -	}
> -
> -	if (dev)
> -		dev_dbg(pdev->dev, "SMU idlemask s0i3: 0x%x\n", val);
> -
> -	if (s)
> -		seq_printf(s, "SMU idlemask : 0x%x\n", val);
> -
> -	return 0;
> -}
> -
>  static int amd_pmc_idlemask_show(struct seq_file *s, void *unused)
>  {
>  	struct amd_pmc_dev *dev = s->private;
> @@ -295,6 +277,24 @@ static inline void amd_pmc_dbgfs_unregister(struct amd_pmc_dev *dev)
>  }
>  #endif /* CONFIG_DEBUG_FS */
>  
> +static int amd_pmc_get_smu_version(struct amd_pmc_dev *dev)
> +{
> +	int rc;
> +	u32 val;
> +
> +	rc = amd_pmc_send_cmd(dev, 0, &val, SMU_MSG_GETSMUVERSION, 1);
> +	if (rc)
> +		return rc;
> +
> +	dev->major = (val >> 16) & GENMASK(15, 0);
> +	dev->minor = (val >> 8) & GENMASK(7, 0);
> +	dev->rev = (val >> 0) & GENMASK(7, 0);
> +
> +	dev_dbg(dev->dev, "SMU version is %u.%u.%u\n", dev->major, dev->minor, dev->rev);
> +
> +	return 0;
> +}
> +
>  static int amd_pmc_setup_smu_logging(struct amd_pmc_dev *dev)
>  {
>  	u32 phys_addr_low, phys_addr_hi;
>