linux-kernel - Re: [PATCH 3/4] mfd: intel-m10-bmc: Move m10bmc_sys

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Date:   Wed, 5 Apr 2023 11:40:22 -0700
From:   Russ Weight <russell.h.weight@...el.com>
To:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Wu Hao <hao.wu@...el.com>, Tom Rix <trix@...hat.com>,
        Moritz Fischer <mdf@...nel.org>, Xu Yilun <yilun.xu@...el.com>,
        <linux-fpga@...r.kernel.org>, Lee Jones <lee@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        <linux-hwmon@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/4] mfd: intel-m10-bmc: Move m10bmc_sys_read() away from
 header



On 4/5/23 01:01, Ilpo Järvinen wrote:
> Move m10bmc_sys_read() out from the header to prepare it for adding
> more code into the function which would make it too large to be a
> static inline any more.
>
> While at it, replace the vague wording in function comment with more
> precise statements.
Reviewed-by: Russ Weight <russell.h.weight@...el.com>
>
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
> ---
>  drivers/hwmon/intel-m10-bmc-hwmon.c |  1 +
>  drivers/mfd/intel-m10-bmc-core.c    | 14 ++++++++++++++
>  include/linux/mfd/intel-m10-bmc.h   | 17 +----------------
>  3 files changed, 16 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/hwmon/intel-m10-bmc-hwmon.c b/drivers/hwmon/intel-m10-bmc-hwmon.c
> index 2f0323c14bab..92900ce7986b 100644
> --- a/drivers/hwmon/intel-m10-bmc-hwmon.c
> +++ b/drivers/hwmon/intel-m10-bmc-hwmon.c
> @@ -794,3 +794,4 @@ MODULE_DEVICE_TABLE(platform, intel_m10bmc_hwmon_ids);
>  MODULE_AUTHOR("Intel Corporation");
>  MODULE_DESCRIPTION("Intel MAX 10 BMC hardware monitor");
>  MODULE_LICENSE("GPL");
> +MODULE_IMPORT_NS(INTEL_M10_BMC_CORE);
> diff --git a/drivers/mfd/intel-m10-bmc-core.c b/drivers/mfd/intel-m10-bmc-core.c
> index 879d98b9b14d..4a1bfe135293 100644
> --- a/drivers/mfd/intel-m10-bmc-core.c
> +++ b/drivers/mfd/intel-m10-bmc-core.c
> @@ -12,6 +12,20 @@
>  #include <linux/mfd/intel-m10-bmc.h>
>  #include <linux/module.h>
>  
> +/*
> + * This function helps to simplify the accessing of the system registers.
> + *
> + * The base of the system registers is configured through the struct
> + * csr_map.
> + */
> +int m10bmc_sys_read(struct intel_m10bmc *m10bmc, unsigned int offset, unsigned int *val)
> +{
> +	const struct m10bmc_csr_map *csr_map = m10bmc->info->csr_map;
> +
> +	return m10bmc_raw_read(m10bmc, csr_map->base + offset, val);
> +}
> +EXPORT_SYMBOL_NS_GPL(m10bmc_sys_read, INTEL_M10_BMC_CORE);
> +
>  int m10bmc_sys_update_bits(struct intel_m10bmc *m10bmc, unsigned int offset,
>  			   unsigned int msk, unsigned int val)
>  {
> diff --git a/include/linux/mfd/intel-m10-bmc.h b/include/linux/mfd/intel-m10-bmc.h
> index 5418f7279ed0..252644fa61be 100644
> --- a/include/linux/mfd/intel-m10-bmc.h
> +++ b/include/linux/mfd/intel-m10-bmc.h
> @@ -267,22 +267,7 @@ m10bmc_raw_read(struct intel_m10bmc *m10bmc, unsigned int addr,
>  	return ret;
>  }
>  
> -/*
> - * The base of the system registers could be configured by HW developers, and
> - * in HW SPEC, the base is not added to the addresses of the system registers.
> - *
> - * This function helps to simplify the accessing of the system registers. And if
> - * the base is reconfigured in HW, SW developers could simply change the
> - * csr_map's base accordingly.
> - */
> -static inline int m10bmc_sys_read(struct intel_m10bmc *m10bmc, unsigned int offset,
> -				  unsigned int *val)
> -{
> -	const struct m10bmc_csr_map *csr_map = m10bmc->info->csr_map;
> -
> -	return m10bmc_raw_read(m10bmc, csr_map->base + offset, val);
> -}
> -
> +int m10bmc_sys_read(struct intel_m10bmc *m10bmc, unsigned int offset, unsigned int *val);
>  int m10bmc_sys_update_bits(struct intel_m10bmc *m10bmc, unsigned int offset,
>  			   unsigned int msk, unsigned int val);
>