linux-kernel - Re: [PATCH] platform/x86: amd-pmc: Shuffle location of amd_pmc_get_smu

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Message-ID: <362138c7-7d6a-69b5-1e0f-0d6e29b1b958@redhat.com>
Date:   Wed, 27 Apr 2022 16:25:43 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Nathan Chancellor <nathan@...nel.org>,
        Shyam Sundar S K <Shyam-sundar.S-k@....com>,
        Mario Limonciello <mario.limonciello@....com>,
        Mark Gross <markgross@...nel.org>
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        patches@...ts.linux.dev
Subject: Re: [PATCH] platform/x86: amd-pmc: Shuffle location of
 amd_pmc_get_smu_version()

Hi,

On 4/18/22 23:38, Nathan Chancellor wrote:
> When CONFIG_DEBUG_FS is disabled, amd_pmc_get_smu_version() is unused:
> 
>   drivers/platform/x86/amd-pmc.c:196:12: warning: unused function 'amd_pmc_get_smu_version' [-Wunused-function]
>   static int amd_pmc_get_smu_version(struct amd_pmc_dev *dev)
>              ^
>   1 warning generated.
> 
> Eliminate the warning by moving amd_pmc_get_smu_version() to the
> CONFIG_DEBUG_FS block where it is used.
> 
> Fixes: b0c07116c894 ("platform/x86: amd-pmc: Avoid reading SMU version at probe time")
> Signed-off-by: Nathan Chancellor <nathan@...nel.org>

Thank you for your patch, I've applied this patch to my review-hans 
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans

Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.

Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.

Regards,

Hans



> ---
>  drivers/platform/x86/amd-pmc.c | 40 +++++++++++++++++-----------------
>  1 file changed, 20 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/platform/x86/amd-pmc.c b/drivers/platform/x86/amd-pmc.c
> index 668a1d6c11ee..e266492d3ef7 100644
> --- a/drivers/platform/x86/amd-pmc.c
> +++ b/drivers/platform/x86/amd-pmc.c
> @@ -193,26 +193,6 @@ struct smu_metrics {
>  	u64 timecondition_notmet_totaltime[SOC_SUBSYSTEM_IP_MAX];
>  } __packed;
>  
> -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->smu_program = (val >> 24) & GENMASK(7, 0);
> -	dev->major = (val >> 16) & GENMASK(7, 0);
> -	dev->minor = (val >> 8) & GENMASK(7, 0);
> -	dev->rev = (val >> 0) & GENMASK(7, 0);
> -
> -	dev_dbg(dev->dev, "SMU program %u version is %u.%u.%u\n",
> -		dev->smu_program, dev->major, dev->minor, dev->rev);
> -
> -	return 0;
> -}
> -
>  static int amd_pmc_stb_debugfs_open(struct inode *inode, struct file *filp)
>  {
>  	struct amd_pmc_dev *dev = filp->f_inode->i_private;
> @@ -417,6 +397,26 @@ 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->smu_program = (val >> 24) & GENMASK(7, 0);
> +	dev->major = (val >> 16) & GENMASK(7, 0);
> +	dev->minor = (val >> 8) & GENMASK(7, 0);
> +	dev->rev = (val >> 0) & GENMASK(7, 0);
> +
> +	dev_dbg(dev->dev, "SMU program %u version is %u.%u.%u\n",
> +		dev->smu_program, dev->major, dev->minor, dev->rev);
> +
> +	return 0;
> +}
> +
>  static int amd_pmc_idlemask_show(struct seq_file *s, void *unused)
>  {
>  	struct amd_pmc_dev *dev = s->private;
> 
> base-commit: b0c07116c894325d40a218f558047f925e4b3bdb