linux-kernel - Re: [PATCH v2 21/36] platform/x86: intel_pmc_ipc: Drop intel_pmc_gcr_read() and intel_pmc_gcr

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Date:   Wed, 8 Jan 2020 18:47:04 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc:     Darren Hart <dvhart@...radead.org>,
        Lee Jones <lee.jones@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Zha Qipeng <qipeng.zha@...el.com>,
        Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.com>,
        "David E . Box" <david.e.box@...ux.intel.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 21/36] platform/x86: intel_pmc_ipc: Drop
 intel_pmc_gcr_read() and intel_pmc_gcr_write()

On Wed, Jan 08, 2020 at 02:41:46PM +0300, Mika Westerberg wrote:
> These functions are not used anywhere so drop them completely.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

> 
> Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
> ---
>  arch/x86/include/asm/intel_pmc_ipc.h | 12 ------
>  drivers/platform/x86/intel_pmc_ipc.c | 59 ----------------------------
>  2 files changed, 71 deletions(-)
> 
> diff --git a/arch/x86/include/asm/intel_pmc_ipc.h b/arch/x86/include/asm/intel_pmc_ipc.h
> index 966ff2171ff9..e6da1ce26256 100644
> --- a/arch/x86/include/asm/intel_pmc_ipc.h
> +++ b/arch/x86/include/asm/intel_pmc_ipc.h
> @@ -34,9 +34,7 @@
>  int intel_pmc_ipc_command(u32 cmd, u32 sub, u8 *in, u32 inlen,
>  		u32 *out, u32 outlen);
>  int intel_pmc_s0ix_counter_read(u64 *data);
> -int intel_pmc_gcr_read(u32 offset, u32 *data);
>  int intel_pmc_gcr_read64(u32 offset, u64 *data);
> -int intel_pmc_gcr_write(u32 offset, u32 data);
>  
>  #else
>  
> @@ -51,21 +49,11 @@ static inline int intel_pmc_s0ix_counter_read(u64 *data)
>  	return -EINVAL;
>  }
>  
> -static inline int intel_pmc_gcr_read(u32 offset, u32 *data)
> -{
> -	return -EINVAL;
> -}
> -
>  static inline int intel_pmc_gcr_read64(u32 offset, u64 *data)
>  {
>  	return -EINVAL;
>  }
>  
> -static inline int intel_pmc_gcr_write(u32 offset, u32 data)
> -{
> -	return -EINVAL;
> -}
> -
>  #endif /*CONFIG_INTEL_PMC_IPC*/
>  
>  #endif
> diff --git a/drivers/platform/x86/intel_pmc_ipc.c b/drivers/platform/x86/intel_pmc_ipc.c
> index 83f47df1c4a5..677ed470e14e 100644
> --- a/drivers/platform/x86/intel_pmc_ipc.c
> +++ b/drivers/platform/x86/intel_pmc_ipc.c
> @@ -210,35 +210,6 @@ static inline int is_gcr_valid(u32 offset)
>  	return 0;
>  }
>  
> -/**
> - * intel_pmc_gcr_read() - Read a 32-bit PMC GCR register
> - * @offset:	offset of GCR register from GCR address base
> - * @data:	data pointer for storing the register output
> - *
> - * Reads the 32-bit PMC GCR register at given offset.
> - *
> - * Return:	negative value on error or 0 on success.
> - */
> -int intel_pmc_gcr_read(u32 offset, u32 *data)
> -{
> -	int ret;
> -
> -	spin_lock(&ipcdev.gcr_lock);
> -
> -	ret = is_gcr_valid(offset);
> -	if (ret < 0) {
> -		spin_unlock(&ipcdev.gcr_lock);
> -		return ret;
> -	}
> -
> -	*data = readl(ipcdev.gcr_mem_base + offset);
> -
> -	spin_unlock(&ipcdev.gcr_lock);
> -
> -	return 0;
> -}
> -EXPORT_SYMBOL_GPL(intel_pmc_gcr_read);
> -
>  /**
>   * intel_pmc_gcr_read64() - Read a 64-bit PMC GCR register
>   * @offset:	offset of GCR register from GCR address base
> @@ -268,36 +239,6 @@ int intel_pmc_gcr_read64(u32 offset, u64 *data)
>  }
>  EXPORT_SYMBOL_GPL(intel_pmc_gcr_read64);
>  
> -/**
> - * intel_pmc_gcr_write() - Write PMC GCR register
> - * @offset:	offset of GCR register from GCR address base
> - * @data:	register update value
> - *
> - * Writes the PMC GCR register of given offset with given
> - * value.
> - *
> - * Return:	negative value on error or 0 on success.
> - */
> -int intel_pmc_gcr_write(u32 offset, u32 data)
> -{
> -	int ret;
> -
> -	spin_lock(&ipcdev.gcr_lock);
> -
> -	ret = is_gcr_valid(offset);
> -	if (ret < 0) {
> -		spin_unlock(&ipcdev.gcr_lock);
> -		return ret;
> -	}
> -
> -	writel(data, ipcdev.gcr_mem_base + offset);
> -
> -	spin_unlock(&ipcdev.gcr_lock);
> -
> -	return 0;
> -}
> -EXPORT_SYMBOL_GPL(intel_pmc_gcr_write);
> -
>  /**
>   * intel_pmc_gcr_update() - Update PMC GCR register bits
>   * @offset:	offset of GCR register from GCR address base
> -- 
> 2.24.1
> 

-- 
With Best Regards,
Andy Shevchenko