linux-kernel - Re: [PATCH v2 1/2] hwmon: shtc1: add support for device tree bindings

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Message-ID: <20200705142515.GA1975@roeck-us.net>
Date:   Sun, 5 Jul 2020 07:25:15 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Chris Ruehl <chris.ruehl@...ys.com.hk>
Cc:     Jack Lo <jack.lo@...ys.com.hk>, devicetree@...r.kernel.org,
        Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] hwmon: shtc1: add support for device tree bindings

On Sun, Jul 05, 2020 at 11:47:25AM +0800, Chris Ruehl wrote:
> Add support for DTS bindings for the sensirion shtc1,shtw1 and shtc3.
> 
> Signed-off-by: Chris Ruehl <chris.ruehl@...ys.com.hk>
> ---
>  drivers/hwmon/shtc1.c | 22 ++++++++++++++++++++--
>  1 file changed, 20 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/hwmon/shtc1.c b/drivers/hwmon/shtc1.c
> index a0078ccede03..61e9275eb666 100644
> --- a/drivers/hwmon/shtc1.c
> +++ b/drivers/hwmon/shtc1.c
> @@ -14,6 +14,7 @@
>  #include <linux/err.h>
>  #include <linux/delay.h>
>  #include <linux/platform_data/shtc1.h>
> +#include <linux/of.h>
>  
>  /* commands (high precision mode) */
>  static const unsigned char shtc1_cmd_measure_blocking_hpm[]    = { 0x7C, 0xA2 };
> @@ -196,6 +197,7 @@ static int shtc1_probe(struct i2c_client *client,
>  	enum shtcx_chips chip = id->driver_data;
>  	struct i2c_adapter *adap = client->adapter;
>  	struct device *dev = &client->dev;
> +	struct device_node *np = dev->of_node;
>  
>  	if (!i2c_check_functionality(adap, I2C_FUNC_I2C)) {
>  		dev_err(dev, "plain i2c transactions not supported\n");
> @@ -233,8 +235,13 @@ static int shtc1_probe(struct i2c_client *client,
>  	data->client = client;
>  	data->chip = chip;
>  
> -	if (client->dev.platform_data)
> +	if (np) {
> +		data->setup.blocking_io = of_property_read_bool(np, "sensirion,blocking_io");
> +		data->setup.high_precision = of_property_read_bool(np, "sensicon,low_precision");
> +	}
> +	else if (client->dev.platform_data)
>  		data->setup = *(struct shtc1_platform_data *)dev->platform_data;

CHECK: braces {} should be used on all arms of this statement
#46: FILE: drivers/hwmon/shtc1.c:238:
+	if (np) {
[...]
+	else if (client->dev.platform_data)
[...]

ERROR: else should follow close brace '}'
#50: FILE: drivers/hwmon/shtc1.c:242:
+	}
+	else if (client->dev.platform_data)