[v1,2/3] hwmon: tmp513: Simplify with dev_err_probe()
Commit Message
Common pattern of handling deferred probe can be simplified with
dev_err_probe(). Less code and also it prints the error value.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/hwmon/tmp513.c | 34 ++++++++++++++--------------------
1 file changed, 14 insertions(+), 20 deletions(-)
Comments
On Tue, Nov 28, 2023 at 08:06:03PM +0200, Andy Shevchenko wrote:
> Common pattern of handling deferred probe can be simplified with
> dev_err_probe(). Less code and also it prints the error value.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Applied, but ...
> ---
> drivers/hwmon/tmp513.c | 34 ++++++++++++++--------------------
> 1 file changed, 14 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/hwmon/tmp513.c b/drivers/hwmon/tmp513.c
> index 849a8c3e1020..6e01800404fc 100644
> --- a/drivers/hwmon/tmp513.c
> +++ b/drivers/hwmon/tmp513.c
> @@ -630,9 +630,9 @@ static int tmp51x_vbus_range_to_reg(struct device *dev,
> } else if (data->vbus_range_uvolt == TMP51X_VBUS_RANGE_16V) {
> data->shunt_config &= ~TMP51X_BUS_VOLTAGE_MASK;
> } else {
> - dev_err(dev, "ti,bus-range-microvolt is invalid: %u\n",
> - data->vbus_range_uvolt);
> - return -EINVAL;
> + return dev_err_probe(dev, -EINVAL,
> + "ti,bus-range-microvolt is invalid: %u\n",
> + data->vbus_range_uvolt);
> }
> return 0;
> }
> @@ -648,8 +648,8 @@ static int tmp51x_pga_gain_to_reg(struct device *dev, struct tmp51x_data *data)
> } else if (data->pga_gain == 1) {
> data->shunt_config |= CURRENT_SENSE_VOLTAGE_40_MASK;
> } else {
> - dev_err(dev, "ti,pga-gain is invalid: %u\n", data->pga_gain);
> - return -EINVAL;
> + return dev_err_probe(dev, -EINVAL,
> + "ti,pga-gain is invalid: %u\n", data->pga_gain);
> }
> return 0;
> }
> @@ -679,9 +679,9 @@ static int tmp51x_read_properties(struct device *dev, struct tmp51x_data *data)
>
> // Check if shunt value is compatible with pga-gain
> if (data->shunt_uohms > data->pga_gain * 40 * 1000 * 1000) {
> - dev_err(dev, "shunt-resistor: %u too big for pga_gain: %u\n",
> - data->shunt_uohms, data->pga_gain);
> - return -EINVAL;
> + return dev_err_probe(dev, -EINVAL,
> + "shunt-resistor: %u too big for pga_gain: %u\n",
> + data->shunt_uohms, data->pga_gain);
> }
>
> return 0;
> @@ -721,22 +721,16 @@ static int tmp51x_probe(struct i2c_client *client)
> data->max_channels = (uintptr_t)i2c_get_match_data(client);
>
> ret = tmp51x_configure(dev, data);
> - if (ret < 0) {
> - dev_err(dev, "error configuring the device: %d\n", ret);
> - return ret;
> - }
> + if (ret < 0)
> + return dev_err_probe(dev, ret, "error configuring the device\n");
>
> data->regmap = devm_regmap_init_i2c(client, &tmp51x_regmap_config);
> - if (IS_ERR(data->regmap)) {
> - dev_err(dev, "failed to allocate register map\n");
> - return PTR_ERR(data->regmap);
> - }
> + if (IS_ERR(data->regmap))
> + return dev_err_probe(dev, PTR_ERR(data->regmap), "failed to allocate register map\n");
That line length was getting too long. Please consider running checkpatch
on your patches.
Guenter
On Thu, Nov 30, 2023 at 08:10:12PM -0800, Guenter Roeck wrote:
> On Tue, Nov 28, 2023 at 08:06:03PM +0200, Andy Shevchenko wrote:
> > Common pattern of handling deferred probe can be simplified with
> > dev_err_probe(). Less code and also it prints the error value.
...
> > + if (IS_ERR(data->regmap))
> > + return dev_err_probe(dev, PTR_ERR(data->regmap), "failed to allocate register map\n");
>
> That line length was getting too long. Please consider running checkpatch
> on your patches.
I got your point, but checkpatch has no limit for the string literals, see
f4c014c0dede ("checkpatch: allow printk strings to exceed 80 characters to maintain their searchability")
ca56dc098caf ("checkpatch: check for quoted strings broken across lines")
So, what the exact parameters should I supply to it?
On 12/1/23 05:53, Andy Shevchenko wrote:
> On Thu, Nov 30, 2023 at 08:10:12PM -0800, Guenter Roeck wrote:
>> On Tue, Nov 28, 2023 at 08:06:03PM +0200, Andy Shevchenko wrote:
>>> Common pattern of handling deferred probe can be simplified with
>>> dev_err_probe(). Less code and also it prints the error value.
>
> ...
>
>>> + if (IS_ERR(data->regmap))
>>> + return dev_err_probe(dev, PTR_ERR(data->regmap), "failed to allocate register map\n");
>>
>> That line length was getting too long. Please consider running checkpatch
>> on your patches.
>
> I got your point, but checkpatch has no limit for the string literals, see
>
> f4c014c0dede ("checkpatch: allow printk strings to exceed 80 characters to maintain their searchability")
> ca56dc098caf ("checkpatch: check for quoted strings broken across lines")
>
> So, what the exact parameters should I supply to it?
>
None. Please just run checkpatch.
$ scripts/checkpatch.pl index.html
WARNING: line length of 102 exceeds 100 columns
#126: FILE: drivers/hwmon/tmp513.c:729:
+ return dev_err_probe(dev, PTR_ERR(data->regmap), "failed to allocate register map\n");
Guenter
On Fri, Dec 01, 2023 at 06:51:32AM -0800, Guenter Roeck wrote:
> On 12/1/23 05:53, Andy Shevchenko wrote:
> > On Thu, Nov 30, 2023 at 08:10:12PM -0800, Guenter Roeck wrote:
> > > On Tue, Nov 28, 2023 at 08:06:03PM +0200, Andy Shevchenko wrote:
...
> > > > + if (IS_ERR(data->regmap))
> > > > + return dev_err_probe(dev, PTR_ERR(data->regmap), "failed to allocate register map\n");
> > >
> > > That line length was getting too long. Please consider running checkpatch
> > > on your patches.
> >
> > I got your point, but checkpatch has no limit for the string literals, see
> >
> > f4c014c0dede ("checkpatch: allow printk strings to exceed 80 characters to maintain their searchability")
> > ca56dc098caf ("checkpatch: check for quoted strings broken across lines")
> >
> > So, what the exact parameters should I supply to it?
>
> None. Please just run checkpatch.
>
> $ scripts/checkpatch.pl index.html
> WARNING: line length of 102 exceeds 100 columns
> #126: FILE: drivers/hwmon/tmp513.c:729:
> + return dev_err_probe(dev, PTR_ERR(data->regmap), "failed to allocate register map\n");
Ah, thanks!
@@ -630,9 +630,9 @@ static int tmp51x_vbus_range_to_reg(struct device *dev,
} else if (data->vbus_range_uvolt == TMP51X_VBUS_RANGE_16V) {
data->shunt_config &= ~TMP51X_BUS_VOLTAGE_MASK;
} else {
- dev_err(dev, "ti,bus-range-microvolt is invalid: %u\n",
- data->vbus_range_uvolt);
- return -EINVAL;
+ return dev_err_probe(dev, -EINVAL,
+ "ti,bus-range-microvolt is invalid: %u\n",
+ data->vbus_range_uvolt);
}
return 0;
}
@@ -648,8 +648,8 @@ static int tmp51x_pga_gain_to_reg(struct device *dev, struct tmp51x_data *data)
} else if (data->pga_gain == 1) {
data->shunt_config |= CURRENT_SENSE_VOLTAGE_40_MASK;
} else {
- dev_err(dev, "ti,pga-gain is invalid: %u\n", data->pga_gain);
- return -EINVAL;
+ return dev_err_probe(dev, -EINVAL,
+ "ti,pga-gain is invalid: %u\n", data->pga_gain);
}
return 0;
}
@@ -679,9 +679,9 @@ static int tmp51x_read_properties(struct device *dev, struct tmp51x_data *data)
// Check if shunt value is compatible with pga-gain
if (data->shunt_uohms > data->pga_gain * 40 * 1000 * 1000) {
- dev_err(dev, "shunt-resistor: %u too big for pga_gain: %u\n",
- data->shunt_uohms, data->pga_gain);
- return -EINVAL;
+ return dev_err_probe(dev, -EINVAL,
+ "shunt-resistor: %u too big for pga_gain: %u\n",
+ data->shunt_uohms, data->pga_gain);
}
return 0;
@@ -721,22 +721,16 @@ static int tmp51x_probe(struct i2c_client *client)
data->max_channels = (uintptr_t)i2c_get_match_data(client);
ret = tmp51x_configure(dev, data);
- if (ret < 0) {
- dev_err(dev, "error configuring the device: %d\n", ret);
- return ret;
- }
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "error configuring the device\n");
data->regmap = devm_regmap_init_i2c(client, &tmp51x_regmap_config);
- if (IS_ERR(data->regmap)) {
- dev_err(dev, "failed to allocate register map\n");
- return PTR_ERR(data->regmap);
- }
+ if (IS_ERR(data->regmap))
+ return dev_err_probe(dev, PTR_ERR(data->regmap), "failed to allocate register map\n");
ret = tmp51x_init(data);
- if (ret < 0) {
- dev_err(dev, "error configuring the device: %d\n", ret);
- return -ENODEV;
- }
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "error configuring the device\n");
hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
data,