linux-kernel - Re: [PATCH v2 2/2] i3c: master: cleanup callback .priv

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Message-ID: <aTFbPE1KHWVeZYi2@tom-desktop>
Date: Thu, 4 Dec 2025 10:58:20 +0100
From: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
To: Frank Li <Frank.Li@....com>
Cc: Jorge Marques <jorge.marques@...log.com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Przemysław Gaj <pgaj@...ence.com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	linux-i3c@...ts.infradead.org, linux-kernel@...r.kernel.org,
	imx@...ts.linux.dev
Subject: Re: [PATCH v2 2/2] i3c: master: cleanup callback .priv_xfers()

On Wed, Dec 03, 2025 at 03:45:51PM -0500, Frank Li wrote:
> Remove the .priv_xfers() callback from the framework after all master
> controller drivers have switched to use the new .i3c_xfers() callback.
> 

Tested-by: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>

> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
>  drivers/i3c/master.c       | 14 ++------------
>  include/linux/i3c/master.h | 11 +----------
>  2 files changed, 3 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
> index f88f7e19203ae5a90267b2491f3b13b6205863e8..ea45a519dd68a514fd7fe8314b3fcf2c5604aa64 100644
> --- a/drivers/i3c/master.c
> +++ b/drivers/i3c/master.c
> @@ -2819,14 +2819,10 @@ EXPORT_SYMBOL_GPL(i3c_generic_ibi_recycle_slot);
>  
>  static int i3c_master_check_ops(const struct i3c_master_controller_ops *ops)
>  {
> -	if (!ops || !ops->bus_init ||
> +	if (!ops || !ops->bus_init || !ops->i3c_xfers ||
>  	    !ops->send_ccc_cmd || !ops->do_daa || !ops->i2c_xfers)
>  		return -EINVAL;
>  
> -	/* Must provide one of priv_xfers (SDR only) or i3c_xfers (all modes) */
> -	if (!ops->priv_xfers && !ops->i3c_xfers)
> -		return -EINVAL;
> -
>  	if (ops->request_ibi &&
>  	    (!ops->enable_ibi || !ops->disable_ibi || !ops->free_ibi ||
>  	     !ops->recycle_ibi_slot))
> @@ -3031,13 +3027,7 @@ int i3c_dev_do_xfers_locked(struct i3c_dev_desc *dev, struct i3c_xfer *xfers,
>  	if (mode != I3C_SDR && !(master->this->info.hdr_cap & BIT(mode)))
>  		return -EOPNOTSUPP;
>  
> -	if (master->ops->i3c_xfers)
> -		return master->ops->i3c_xfers(dev, xfers, nxfers, mode);
> -
> -	if (mode != I3C_SDR)
> -		return -EINVAL;
> -
> -	return master->ops->priv_xfers(dev, xfers, nxfers);
> +	return master->ops->i3c_xfers(dev, xfers, nxfers, mode);
>  }
>  
>  int i3c_dev_disable_ibi_locked(struct i3c_dev_desc *dev)
> diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h
> index 2fd850f4678b22f352507f8f55910a196536a1e5..6225ad28f210fa15a8f2d521a565ef06995e2470 100644
> --- a/include/linux/i3c/master.h
> +++ b/include/linux/i3c/master.h
> @@ -417,12 +417,7 @@ struct i3c_bus {
>   *		      all CCC commands are supported.
>   * @send_ccc_cmd: send a CCC command
>   *		  This method is mandatory.
> - * @priv_xfers: do one or several private I3C SDR transfers
> - *		This method is mandatory when i3c_xfers is not implemented. It
> - *		is deprecated.
> - * @i3c_xfers: do one or several I3C SDR or HDR transfers
> - *	       This method is mandatory when priv_xfers is not implemented but
> - *	       should be implemented instead of priv_xfers.
> + * @i3c_xfers: do one or several I3C SDR or HDR transfers.
>   * @attach_i2c_dev: called every time an I2C device is attached to the bus.
>   *		    This is a good place to attach master controller specific
>   *		    data to I2C devices.
> @@ -478,10 +473,6 @@ struct i3c_master_controller_ops {
>  				 const struct i3c_ccc_cmd *cmd);
>  	int (*send_ccc_cmd)(struct i3c_master_controller *master,
>  			    struct i3c_ccc_cmd *cmd);
> -	/* Deprecated, please use i3c_xfers() */
> -	int (*priv_xfers)(struct i3c_dev_desc *dev,
> -			  struct i3c_priv_xfer *xfers,
> -			  int nxfers);
>  	int (*i3c_xfers)(struct i3c_dev_desc *dev,
>  			 struct i3c_xfer *xfers,
>  			 int nxfers, enum i3c_xfer_mode mode);
> 
> -- 
> 2.34.1
> 
>