linux-kernel - Re: [PATCH 3/8] soundwire: mipi_disco: expose sdw_slave_read

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Date:   Tue, 7 May 2019 18:00:11 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        tiwai@...e.de, broonie@...nel.org, gregkh@...uxfoundation.org,
        liam.r.girdwood@...ux.intel.com, jank@...ence.com, joe@...ches.com,
        srinivas.kandagatla@...aro.org,
        Sanyog Kale <sanyog.r.kale@...el.com>
Subject: Re: [PATCH 3/8] soundwire: mipi_disco: expose sdw_slave_read_dpn as
 symbol

On 03-05-19, 19:29, Pierre-Louis Bossart wrote:
> sdw_slave_read_dpn was so far a static function, which prevented
> codec drivers from using it. Expose as non-static function and add symbol
> 
> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> ---
>  drivers/soundwire/mipi_disco.c | 7 ++++---
>  include/linux/soundwire/sdw.h  | 3 +++
>  2 files changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/soundwire/mipi_disco.c b/drivers/soundwire/mipi_disco.c
> index 6df68584c963..4995554bd6b6 100644
> --- a/drivers/soundwire/mipi_disco.c
> +++ b/drivers/soundwire/mipi_disco.c
> @@ -161,9 +161,9 @@ static int sdw_slave_read_dp0(struct sdw_slave *slave,
>  	return 0;
>  }
>  
> -static int sdw_slave_read_dpn(struct sdw_slave *slave,
> -			      struct sdw_dpn_prop *dpn, int count, int ports,
> -			      char *type)
> +int sdw_slave_read_dpn(struct sdw_slave *slave,
> +		       struct sdw_dpn_prop *dpn, int count, int ports,
> +		       char *type)
>  {
>  	struct fwnode_handle *node;
>  	u32 bit, i = 0;
> @@ -283,6 +283,7 @@ static int sdw_slave_read_dpn(struct sdw_slave *slave,
>  
>  	return 0;
>  }
> +EXPORT_SYMBOL(sdw_slave_read_dpn);

Fine to export but would be great to accompany user with it. In
general do not add a API without user.

-- 
~Vinod