linux-kernel - Re: [PATCH 3/3] IIO: st_accel.h: sync DT and I2C device ID table strings

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Date:   Sat, 30 Jun 2018 16:33:05 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Nikolaus Voss <nikolaus.voss@...wensteinmedical.de>
Cc:     Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Lorenzo Bianconi <lorenzo.bianconi83@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Xiongfeng Wang <xiongfeng.wang@...aro.org>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] IIO: st_accel.h: sync DT and I2C device ID table
 strings

On Fri, 29 Jun 2018 10:45:54 +0200
Nikolaus Voss <nikolaus.voss@...wensteinmedical.de> wrote:

> I2C device ID table strings should really match the DT compatible
> strings (without the manufacturer prefix) to avoid confusion. This is
> especially reasonable when using ACPI PRP0001 HID /DT compatibility
> entries along with the DT compatible property in DSD which is
> used as a modalias (with manufacturer prefix stripped off) by the ACPI
> layer and thus as i2c_board_info->type by the I2C layer.
> 
> Signed-off-by: Nikolaus Voss <nikolaus.voss@...wensteinmedical.de>

Nice to have I agree.  However, it's an ABI change as this is exposed
via
/sys/bus/iio/devices/iio:\deviceN/name and is used by lots of scripts
etc to identify the device.  So we are stuck with it.

There is a reason we've kept this mess here for quite some time.

Jonathan

> ---
>  drivers/iio/accel/st_accel.h | 32 ++++++++++++++++----------------
>  1 file changed, 16 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/iio/accel/st_accel.h b/drivers/iio/accel/st_accel.h
> index 2f931e4837e5..be4a4a41f849 100644
> --- a/drivers/iio/accel/st_accel.h
> +++ b/drivers/iio/accel/st_accel.h
> @@ -37,23 +37,23 @@ enum st_accel_type {
>  	ST_ACCEL_MAX,
>  };
>  
> -#define H3LIS331DL_ACCEL_DEV_NAME	"h3lis331dl_accel"
> -#define LIS3LV02DL_ACCEL_DEV_NAME	"lis3lv02dl_accel"
> -#define LSM303DLHC_ACCEL_DEV_NAME	"lsm303dlhc_accel"
> -#define LIS3DH_ACCEL_DEV_NAME		"lis3dh"
> -#define LSM330D_ACCEL_DEV_NAME		"lsm330d_accel"
> -#define LSM330DL_ACCEL_DEV_NAME		"lsm330dl_accel"
> -#define LSM330DLC_ACCEL_DEV_NAME	"lsm330dlc_accel"
> -#define LIS331DL_ACCEL_DEV_NAME		"lis331dl_accel"
> -#define LIS331DLH_ACCEL_DEV_NAME	"lis331dlh"
> -#define LSM303DL_ACCEL_DEV_NAME		"lsm303dl_accel"
> -#define LSM303DLH_ACCEL_DEV_NAME	"lsm303dlh_accel"
> -#define LSM303DLM_ACCEL_DEV_NAME	"lsm303dlm_accel"
> -#define LSM330_ACCEL_DEV_NAME		"lsm330_accel"
> -#define LSM303AGR_ACCEL_DEV_NAME	"lsm303agr_accel"
> -#define LIS2DH12_ACCEL_DEV_NAME		"lis2dh12_accel"
> +#define H3LIS331DL_ACCEL_DEV_NAME	"h3lis331dl-accel"
> +#define LIS3LV02DL_ACCEL_DEV_NAME	"lis3lv02dl-accel"
> +#define LSM303DLHC_ACCEL_DEV_NAME	"lsm303dlhc-accel"
> +#define LIS3DH_ACCEL_DEV_NAME		"lis3dh-accel"
> +#define LSM330D_ACCEL_DEV_NAME		"lsm330d-accel"
> +#define LSM330DL_ACCEL_DEV_NAME		"lsm330dl-accel"
> +#define LSM330DLC_ACCEL_DEV_NAME	"lsm330dlc-accel"
> +#define LIS331DL_ACCEL_DEV_NAME		"lis331dl-accel"
> +#define LIS331DLH_ACCEL_DEV_NAME	"lis331dlh-accel"
> +#define LSM303DL_ACCEL_DEV_NAME		"lsm303dl-accel"
> +#define LSM303DLH_ACCEL_DEV_NAME	"lsm303dlh-accel"
> +#define LSM303DLM_ACCEL_DEV_NAME	"lsm303dlm-accel"
> +#define LSM330_ACCEL_DEV_NAME		"lsm330-accel"
> +#define LSM303AGR_ACCEL_DEV_NAME	"lsm303agr-accel"
> +#define LIS2DH12_ACCEL_DEV_NAME		"lis2dh12-accel"
>  #define LIS3L02DQ_ACCEL_DEV_NAME	"lis3l02dq"
> -#define LNG2DM_ACCEL_DEV_NAME		"lng2dm"
> +#define LNG2DM_ACCEL_DEV_NAME		"lng2dm-accel"
>  #define LIS2DW12_ACCEL_DEV_NAME		"lis2dw12"
>  #define LIS3DHH_ACCEL_DEV_NAME		"lis3dhh"
>