[PATCH v2 1/2] hwmon: (lm87) Remove unused I2C devices driver_data

[PATCH v2 1/2] hwmon: (lm87) Remove unused I2C devices driver_data

[Javier Martinez Canillas]

The I2C device ID entries set a .driver_data but this data is never
looked up by the driver. So don't set it and also remove the enum.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>

---

Changes in v2:
- Use the correct driver in subject line.

 drivers/hwmon/lm87.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
index 04a7a1ddb030..c0766e7392d3 100644
--- a/drivers/hwmon/lm87.c
+++ b/drivers/hwmon/lm87.c
@@ -75,8 +75,6 @@
 
 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
 
-enum chips { lm87, adm1024 };
-
 /*
  * The LM87 registers
  */
@@ -981,8 +979,8 @@ static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id)
  */
 
 static const struct i2c_device_id lm87_id[] = {
-	{ "lm87", lm87 },
-	{ "adm1024", adm1024 },
+	{ "lm87", 0 },
+	{ "adm1024", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, lm87_id);
-- 
2.9.3

[PATCH v2 2/2] hwmon: (lm87) Add OF device ID table

[Javier Martinez Canillas]

The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>

---
Hello,

I should had included this patch in series [0] but it seems that I didn't.

[0]: https://lkml.org/lkml/2017/2/24/360

Best regards,
Javier

Changes in v2:
- Use the correct driver in subject line.
- Keep OF device ID table sorted in the same order than I2C device ID table.

 drivers/hwmon/lm87.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
index c0766e7392d3..b48d30760388 100644
--- a/drivers/hwmon/lm87.c
+++ b/drivers/hwmon/lm87.c
@@ -985,10 +985,18 @@ static const struct i2c_device_id lm87_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, lm87_id);
 
+static const struct of_device_id lm87_of_match[] = {
+	{ .compatible = "ti,lm87" },
+	{ .compatible = "adi,adm1024" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, lm87_of_match);
+
 static struct i2c_driver lm87_driver = {
 	.class		= I2C_CLASS_HWMON,
 	.driver = {
 		.name	= "lm87",
+		.of_match_table = lm87_of_match,
 	},
 	.probe		= lm87_probe,
 	.id_table	= lm87_id,
-- 
2.9.3

Re: [v2,1/2] hwmon: (lm87) Remove unused I2C devices driver_data

[Guenter Roeck]

On Wed, Apr 12, 2017 at 09:21:38PM -0300, Javier Martinez Canillas wrote:
> The I2C device ID entries set a .driver_data but this data is never
> looked up by the driver. So don't set it and also remove the enum.
> 
> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>

Applied.

Thanks,
Guenter

> ---
> 
> Changes in v2:
> - Use the correct driver in subject line.
> 
>  drivers/hwmon/lm87.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
> index 04a7a1ddb030..c0766e7392d3 100644
> --- a/drivers/hwmon/lm87.c
> +++ b/drivers/hwmon/lm87.c
> @@ -75,8 +75,6 @@
>  
>  static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
>  
> -enum chips { lm87, adm1024 };
> -
>  /*
>   * The LM87 registers
>   */
> @@ -981,8 +979,8 @@ static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id)
>   */
>  
>  static const struct i2c_device_id lm87_id[] = {
> -	{ "lm87", lm87 },
> -	{ "adm1024", adm1024 },
> +	{ "lm87", 0 },
> +	{ "adm1024", 0 },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(i2c, lm87_id);

Re: [v2,2/2] hwmon: (lm87) Add OF device ID table

[Guenter Roeck]

On Wed, Apr 12, 2017 at 09:21:39PM -0300, Javier Martinez Canillas wrote:
> The driver doesn't have a struct of_device_id table but supported devices
> are registered via Device Trees. This is working on the assumption that a
> I2C device registered via OF will always match a legacy I2C device ID and
> that the MODALIAS reported will always be of the form i2c:<device>.
> 
> But this could change in the future so the correct approach is to have an
> OF device ID table if the devices are registered via OF.
> 
> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>

Applied.

Thanks,
Guenter

> ---
> Hello,
> 
> I should had included this patch in series [0] but it seems that I didn't.
> 
> [0]: https://lkml.org/lkml/2017/2/24/360
> 
> Best regards,
> Javier
> 
> Changes in v2:
> - Use the correct driver in subject line.
> - Keep OF device ID table sorted in the same order than I2C device ID table.
> 
>  drivers/hwmon/lm87.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
> index c0766e7392d3..b48d30760388 100644
> --- a/drivers/hwmon/lm87.c
> +++ b/drivers/hwmon/lm87.c
> @@ -985,10 +985,18 @@ static const struct i2c_device_id lm87_id[] = {
>  };
>  MODULE_DEVICE_TABLE(i2c, lm87_id);
>  
> +static const struct of_device_id lm87_of_match[] = {
> +	{ .compatible = "ti,lm87" },
> +	{ .compatible = "adi,adm1024" },
> +	{ },
> +};
> +MODULE_DEVICE_TABLE(of, lm87_of_match);
> +
>  static struct i2c_driver lm87_driver = {
>  	.class		= I2C_CLASS_HWMON,
>  	.driver = {
>  		.name	= "lm87",
> +		.of_match_table = lm87_of_match,
>  	},
>  	.probe		= lm87_probe,
>  	.id_table	= lm87_id,