linux-kernel - Re: [PATCH v1 1/1] device property: Add const qualifier to device_get_match

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Date:   Thu, 22 Sep 2022 17:44:18 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Daniel Scally <djrscally@...il.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v1 1/1] device property: Add const qualifier to
 device_get_match_data() parameter

On Thu, Sep 22, 2022 at 04:54:10PM +0300, Andy Shevchenko wrote:
> Add const qualifier to the device_get_match_data() parameter.
> Some of the future users may utilize this function without
> forcing the type.
> 
> All the same, dev_fwnode() may be used with a const qualifier.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>

> ---
>  drivers/base/property.c  | 4 ++--
>  include/linux/property.h | 4 ++--
>  2 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/base/property.c b/drivers/base/property.c
> index ed6f449f8e5c..4d6278a84868 100644
> --- a/drivers/base/property.c
> +++ b/drivers/base/property.c
> @@ -17,7 +17,7 @@
>  #include <linux/property.h>
>  #include <linux/phy.h>
>  
> -struct fwnode_handle *dev_fwnode(struct device *dev)
> +struct fwnode_handle *dev_fwnode(const struct device *dev)
>  {
>  	return IS_ENABLED(CONFIG_OF) && dev->of_node ?
>  		of_fwnode_handle(dev->of_node) : dev->fwnode;
> @@ -1200,7 +1200,7 @@ int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
>  }
>  EXPORT_SYMBOL(fwnode_graph_parse_endpoint);
>  
> -const void *device_get_match_data(struct device *dev)
> +const void *device_get_match_data(const struct device *dev)
>  {
>  	return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data, dev);
>  }
> diff --git a/include/linux/property.h b/include/linux/property.h
> index a5b429d623f6..117cc200c656 100644
> --- a/include/linux/property.h
> +++ b/include/linux/property.h
> @@ -32,7 +32,7 @@ enum dev_dma_attr {
>  	DEV_DMA_COHERENT,
>  };
>  
> -struct fwnode_handle *dev_fwnode(struct device *dev);
> +struct fwnode_handle *dev_fwnode(const struct device *dev);
>  
>  bool device_property_present(struct device *dev, const char *propname);
>  int device_property_read_u8_array(struct device *dev, const char *propname,
> @@ -387,7 +387,7 @@ bool device_dma_supported(struct device *dev);
>  
>  enum dev_dma_attr device_get_dma_attr(struct device *dev);
>  
> -const void *device_get_match_data(struct device *dev);
> +const void *device_get_match_data(const struct device *dev);
>  
>  int device_get_phy_mode(struct device *dev);
>  int fwnode_get_phy_mode(struct fwnode_handle *fwnode);
> -- 
> 2.35.1

-- 
heikki