Re: [PATCH v2 7/9] HID: remove hid_get_raw_report in struct hid_device

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On Wed, 5 Feb 2014, Benjamin Tissoires wrote:

> dev->hid_get_raw_report(X) and hid_hw_raw_request(X, HID_REQ_GET_REPORT)
> are strictly equivalent. Switch the hid subsystem to the hid_hw notation
> and remove the field .hid_get_raw_report in struct hid_device.
> 
> Reviewed-by: David Herrmann <dh.herrmann@xxxxxxxxx>
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
> ---
>  drivers/hid/hid-input.c       | 6 +++---
>  drivers/hid/hid-sony.c        | 3 ++-
>  drivers/hid/hidraw.c          | 7 ++++---
>  drivers/hid/i2c-hid/i2c-hid.c | 1 -
>  drivers/hid/uhid.c            | 1 -
>  drivers/hid/usbhid/hid-core.c | 1 -
>  include/linux/hid.h           | 3 ---
>  net/bluetooth/hidp/core.c     | 1 -
>  8 files changed, 9 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
> index 68db2db..6253e95 100644
> --- a/drivers/hid/hid-input.c
> +++ b/drivers/hid/hid-input.c
> @@ -350,9 +350,9 @@ static int hidinput_get_battery_property(struct power_supply *psy,
>  			ret = -ENOMEM;
>  			break;
>  		}
> -		ret = dev->hid_get_raw_report(dev, dev->battery_report_id,
> -					      buf, 2,
> -					      dev->battery_report_type);
> +		ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
> +					 dev->battery_report_type,
> +					 HID_REQ_GET_REPORT);
>  
>  		if (ret != 2) {
>  			ret = -ENODATA;
> diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
> index 2bd3f13..b51db79 100644
> --- a/drivers/hid/hid-sony.c
> +++ b/drivers/hid/hid-sony.c
> @@ -810,7 +810,8 @@ static int sixaxis_set_operational_usb(struct hid_device *hdev)
>  	if (!buf)
>  		return -ENOMEM;
>  
> -	ret = hdev->hid_get_raw_report(hdev, 0xf2, buf, 17, HID_FEATURE_REPORT);
> +	ret = hid_hw_raw_request(hdev, 0xf2, buf, 17, HID_FEATURE_REPORT,
> +				 HID_REQ_GET_REPORT);
>  
>  	if (ret < 0)
>  		hid_err(hdev, "can't set operational mode\n");
> diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
> index cb0137b..4b2dc95 100644
> --- a/drivers/hid/hidraw.c
> +++ b/drivers/hid/hidraw.c
> @@ -189,7 +189,7 @@ static ssize_t hidraw_get_report(struct file *file, char __user *buffer, size_t
>  
>  	dev = hidraw_table[minor]->hid;
>  
> -	if (!dev->hid_get_raw_report) {
> +	if (!dev->ll_driver->raw_request) {
>  		ret = -ENODEV;
>  		goto out;
>  	}
> @@ -216,14 +216,15 @@ static ssize_t hidraw_get_report(struct file *file, char __user *buffer, size_t
>  
>  	/*
>  	 * Read the first byte from the user. This is the report number,
> -	 * which is passed to dev->hid_get_raw_report().
> +	 * which is passed to hid_hw_raw_request().
>  	 */
>  	if (copy_from_user(&report_number, buffer, 1)) {
>  		ret = -EFAULT;
>  		goto out_free;
>  	}
>  
> -	ret = dev->hid_get_raw_report(dev, report_number, buf, count, report_type);
> +	ret = hid_hw_raw_request(dev, report_number, buf, count, report_type,
> +				 HID_REQ_GET_REPORT);
>  
>  	if (ret < 0)
>  		goto out_free;
> diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
> index 923ff81..f57de7f 100644
> --- a/drivers/hid/i2c-hid/i2c-hid.c
> +++ b/drivers/hid/i2c-hid/i2c-hid.c
> @@ -1003,7 +1003,6 @@ static int i2c_hid_probe(struct i2c_client *client,
>  
>  	hid->driver_data = client;
>  	hid->ll_driver = &i2c_hid_ll_driver;
> -	hid->hid_get_raw_report = i2c_hid_get_raw_report;
>  	hid->hid_output_raw_report = i2c_hid_output_raw_report;
>  	hid->dev.parent = &client->dev;
>  	ACPI_COMPANION_SET(&hid->dev, ACPI_COMPANION(&client->dev));
> diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
> index f5a2b19..12439e1 100644
> --- a/drivers/hid/uhid.c
> +++ b/drivers/hid/uhid.c
> @@ -404,7 +404,6 @@ static int uhid_dev_create(struct uhid_device *uhid,
>  	hid->uniq[63] = 0;
>  
>  	hid->ll_driver = &uhid_hid_driver;
> -	hid->hid_get_raw_report = uhid_hid_get_raw;

I'll queue a followup patch on top of this that completely removes 
uhid_hid_get_raw(), as it's unused now.

-- 
Jiri Kosina
SUSE Labs
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