linux-kernel - Re: [PATCH v5 15/15] iio: inv_mpu6050: Use i2c_acpi_get_i2c

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Date:   Sun, 2 Dec 2018 16:41:05 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Darren Hart <dvhart@...radead.org>,
        platform-driver-x86@...r.kernel.org,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        linux-acpi@...r.kernel.org, Wolfram Sang <wsa@...-dreams.de>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        linux-i2c@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org
Subject: Re: [PATCH v5 15/15] iio: inv_mpu6050: Use
 i2c_acpi_get_i2c_resource() helper


+CC linux-iio mostly so I can track it and because others may care.

On Wed, 28 Nov 2018 13:45:35 +0200
Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

> ACPI provides a generic helper to get I2C Serial Bus resources.
> Use it instead of open coded variant.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Reviewed-by: Hans de Goede <hdegoede@...hat.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

Thanks,

Jonathan
> ---
>  drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c | 16 ++++++----------
>  1 file changed, 6 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
> index d78a10403bac..a961b5a06fe6 100644
> --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
> +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
> @@ -91,18 +91,14 @@ static int asus_acpi_get_sensor_info(struct acpi_device *adev,
>  
>  static int acpi_i2c_check_resource(struct acpi_resource *ares, void *data)
>  {
> +	struct acpi_resource_i2c_serialbus *sb;
>  	u32 *addr = data;
>  
> -	if (ares->type == ACPI_RESOURCE_TYPE_SERIAL_BUS) {
> -		struct acpi_resource_i2c_serialbus *sb;
> -
> -		sb = &ares->data.i2c_serial_bus;
> -		if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_I2C) {
> -			if (*addr)
> -				*addr |= (sb->slave_address << 16);
> -			else
> -				*addr = sb->slave_address;
> -		}
> +	if (i2c_acpi_get_i2c_resource(ares, &sb)) {
> +		if (*addr)
> +			*addr |= (sb->slave_address << 16);
> +		else
> +			*addr = sb->slave_address;
>  	}
>  
>  	/* Tell the ACPI core that we already copied this address */