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Date:   Mon, 16 Mar 2020 16:45:07 +0100
From:   Jean-Philippe Brucker <jean-philippe@linaro.org>
To:     Joerg Roedel <joro@8bytes.org>
Cc:     iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
        linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org,
        virtualization@lists.linux-foundation.org,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Hanjun Guo <guohanjun@huawei.com>,
        Sudeep Holla <sudeep.holla@arm.com>,
        Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
        Will Deacon <will@kernel.org>,
        Robin Murphy <robin.murphy@arm.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Thierry Reding <thierry.reding@gmail.com>,
        Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Joerg Roedel <jroedel@suse.de>
Subject: Re: [PATCH 05/15] iommu: Rename struct iommu_param to dev_iommu
Message-ID: <20200316154507.GF304669@myrica>
References: <20200310091229.29830-1-joro@8bytes.org>
 <20200310091229.29830-6-joro@8bytes.org>
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On Tue, Mar 10, 2020 at 10:12:19AM +0100, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@suse.de>
> 
> The term dev_iommu aligns better with other existing structures and
> their accessor functions.
> 
> Tested-by: Will Deacon <will@kernel.org> # arm-smmu
> Signed-off-by: Joerg Roedel <jroedel@suse.de>

Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>

> ---
>  drivers/iommu/iommu.c  | 28 ++++++++++++++--------------
>  include/linux/device.h |  6 +++---
>  include/linux/iommu.h  |  4 ++--
>  3 files changed, 19 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
> index 3e3528436e0b..beac2ef063dd 100644
> --- a/drivers/iommu/iommu.c
> +++ b/drivers/iommu/iommu.c
> @@ -152,9 +152,9 @@ void iommu_device_unregister(struct iommu_device *iommu)
>  }
>  EXPORT_SYMBOL_GPL(iommu_device_unregister);
>  
> -static struct iommu_param *iommu_get_dev_param(struct device *dev)
> +static struct dev_iommu *dev_iommu_get(struct device *dev)
>  {
> -	struct iommu_param *param = dev->iommu_param;
> +	struct dev_iommu *param = dev->iommu;
>  
>  	if (param)
>  		return param;
> @@ -164,14 +164,14 @@ static struct iommu_param *iommu_get_dev_param(struct device *dev)
>  		return NULL;
>  
>  	mutex_init(&param->lock);
> -	dev->iommu_param = param;
> +	dev->iommu = param;
>  	return param;
>  }
>  
> -static void iommu_free_dev_param(struct device *dev)
> +static void dev_iommu_free(struct device *dev)
>  {
> -	kfree(dev->iommu_param);
> -	dev->iommu_param = NULL;
> +	kfree(dev->iommu);
> +	dev->iommu = NULL;
>  }
>  
>  int iommu_probe_device(struct device *dev)
> @@ -183,7 +183,7 @@ int iommu_probe_device(struct device *dev)
>  	if (!ops)
>  		return -EINVAL;
>  
> -	if (!iommu_get_dev_param(dev))
> +	if (!dev_iommu_get(dev))
>  		return -ENOMEM;
>  
>  	if (!try_module_get(ops->owner)) {
> @@ -200,7 +200,7 @@ int iommu_probe_device(struct device *dev)
>  err_module_put:
>  	module_put(ops->owner);
>  err_free_dev_param:
> -	iommu_free_dev_param(dev);
> +	dev_iommu_free(dev);
>  	return ret;
>  }
>  
> @@ -211,9 +211,9 @@ void iommu_release_device(struct device *dev)
>  	if (dev->iommu_group)
>  		ops->remove_device(dev);
>  
> -	if (dev->iommu_param) {
> +	if (dev->iommu) {
>  		module_put(ops->owner);
> -		iommu_free_dev_param(dev);
> +		dev_iommu_free(dev);
>  	}
>  }
>  
> @@ -972,7 +972,7 @@ int iommu_register_device_fault_handler(struct device *dev,
>  					iommu_dev_fault_handler_t handler,
>  					void *data)
>  {
> -	struct iommu_param *param = dev->iommu_param;
> +	struct dev_iommu *param = dev->iommu;
>  	int ret = 0;
>  
>  	if (!param)
> @@ -1015,7 +1015,7 @@ EXPORT_SYMBOL_GPL(iommu_register_device_fault_handler);
>   */
>  int iommu_unregister_device_fault_handler(struct device *dev)
>  {
> -	struct iommu_param *param = dev->iommu_param;
> +	struct dev_iommu *param = dev->iommu;
>  	int ret = 0;
>  
>  	if (!param)
> @@ -1055,7 +1055,7 @@ EXPORT_SYMBOL_GPL(iommu_unregister_device_fault_handler);
>   */
>  int iommu_report_device_fault(struct device *dev, struct iommu_fault_event *evt)
>  {
> -	struct iommu_param *param = dev->iommu_param;
> +	struct dev_iommu *param = dev->iommu;
>  	struct iommu_fault_event *evt_pending = NULL;
>  	struct iommu_fault_param *fparam;
>  	int ret = 0;
> @@ -1104,7 +1104,7 @@ int iommu_page_response(struct device *dev,
>  	int ret = -EINVAL;
>  	struct iommu_fault_event *evt;
>  	struct iommu_fault_page_request *prm;
> -	struct iommu_param *param = dev->iommu_param;
> +	struct dev_iommu *param = dev->iommu;
>  	struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
>  
>  	if (!domain || !domain->ops->page_response)
> diff --git a/include/linux/device.h b/include/linux/device.h
> index fa04dfd22bbc..405a8f11bec1 100644
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -44,7 +44,7 @@ struct iommu_ops;
>  struct iommu_group;
>  struct iommu_fwspec;
>  struct dev_pin_info;
> -struct iommu_param;
> +struct dev_iommu;
>  
>  /**
>   * struct subsys_interface - interfaces to device functions
> @@ -514,7 +514,7 @@ struct dev_links_info {
>   * 		device (i.e. the bus driver that discovered the device).
>   * @iommu_group: IOMMU group the device belongs to.
>   * @iommu_fwspec: IOMMU-specific properties supplied by firmware.
> - * @iommu_param: Per device generic IOMMU runtime data
> + * @iommu:	Per device generic IOMMU runtime data
>   *
>   * @offline_disabled: If set, the device is permanently online.
>   * @offline:	Set after successful invocation of bus type's .offline().
> @@ -614,7 +614,7 @@ struct device {
>  	void	(*release)(struct device *dev);
>  	struct iommu_group	*iommu_group;
>  	struct iommu_fwspec	*iommu_fwspec;
> -	struct iommu_param	*iommu_param;
> +	struct dev_iommu	*iommu;
>  
>  	bool			offline_disabled:1;
>  	bool			offline:1;
> diff --git a/include/linux/iommu.h b/include/linux/iommu.h
> index 3c4ca041d7a2..1c9fa5c1174b 100644
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@ -365,7 +365,7 @@ struct iommu_fault_param {
>  };
>  
>  /**
> - * struct iommu_param - collection of per-device IOMMU data
> + * struct dev_iommu - Collection of per-device IOMMU data
>   *
>   * @fault_param: IOMMU detected device fault reporting data
>   *
> @@ -373,7 +373,7 @@ struct iommu_fault_param {
>   *	struct iommu_group	*iommu_group;
>   *	struct iommu_fwspec	*iommu_fwspec;
>   */
> -struct iommu_param {
> +struct dev_iommu {
>  	struct mutex lock;
>  	struct iommu_fault_param *fault_param;
>  };
> -- 
> 2.17.1
>