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SubjectRe: [PATCH 10/12] staging: iio: tsl2x7x: make logging consistent and correct newlines
On Sat, 10 Mar 2018 14:52:40 +0000
Jonathan Cameron <jic23@kernel.org> wrote:

> On Sat, 3 Mar 2018 20:49:40 -0500
> Brian Masney <masneyb@onstation.org> wrote:
>
> > This patch updates all of the logging commands so that they are
> > consistent with the other messages, includes __func__ in the message,
> > and all of the messages include newlines.
> >
> > This patch also removes some debug log messages from tsl2x7x_prox_cal().
> >
> > Signed-off-by: Brian Masney <masneyb@onstation.org>
> Hmm. I nearly fixed this one up but there are a few too many elements I don't
> agree with.

I knew there was something I was forgetting. There is no point in
putting function names in dynamic debug calls, you can turn that
on if you want it for all of them anyway.

Jonathan
>
> > ---
> > drivers/staging/iio/light/tsl2x7x.c | 58 ++++++++++++++++++++-----------------
> > 1 file changed, 31 insertions(+), 27 deletions(-)
> >
> > diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c
> > index da7a4e025083..fb91c46c8747 100644
> > --- a/drivers/staging/iio/light/tsl2x7x.c
> > +++ b/drivers/staging/iio/light/tsl2x7x.c
> > @@ -378,7 +378,8 @@ static int tsl2x7x_get_lux(struct iio_dev *indio_dev)
> > ret = i2c_smbus_read_byte_data(chip->client, reg);
> > if (ret < 0) {
> > dev_err(&chip->client->dev,
> > - "failed to read. err=%x\n", ret);
> > + "%s: failed to read from register %x: %d\n",
> > + __func__, reg, ret);
> > goto out_unlock;
> > }
> >
> > @@ -424,7 +425,9 @@ static int tsl2x7x_get_lux(struct iio_dev *indio_dev)
> >
> > /* note: lux is 31 bit max at this point */
> > if (ch1lux > ch0lux) {
> > - dev_dbg(&chip->client->dev, "ch1lux > ch0lux-return last value\n");
> > + dev_dbg(&chip->client->dev,
> > + "%s: ch1lux > ch0lux; returning last value\n",
> > + __func__);
> > ret = chip->als_cur_info.lux;
> > goto out_unlock;
> > }
> > @@ -600,7 +603,8 @@ static int tsl2x7x_als_calibrate(struct iio_dev *indio_dev)
> >
> > chip->settings.als_gain_trim = ret;
> > dev_info(&chip->client->dev,
> > - "%s als_calibrate completed\n", chip->client->name);
> > + "%s: %s ALS calibration successfully completed\n",
> > + __func__, chip->client->name);
> I'm happy with having function name in errors, but it's just noise in info
> prints.
>
> Mind you this dev_info should go or become dev_dbg - it is superflous
> detail to put in the kernel logs.
>
> >
> > return ret;
> > }
> > @@ -644,7 +648,8 @@ static int tsl2x7x_chip_on(struct iio_dev *indio_dev)
> > /* and make sure we're not already on */
> > if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) {
> > /* if forcing a register update - turn off, then on */
> > - dev_info(&chip->client->dev, "device is already enabled\n");
> > + dev_info(&chip->client->dev, "%s: device is already enabled\n",
> > + __func__);
> Again noise. dev_dbg or drop entirely as it doesn't need to be logged.
> > return -EINVAL;
> > }
> >
> > @@ -681,12 +686,14 @@ static int tsl2x7x_chip_on(struct iio_dev *indio_dev)
> > */
> > for (i = 0, dev_reg = chip->tsl2x7x_config;
> > i < TSL2X7X_MAX_CONFIG_REG; i++) {
> > - ret = i2c_smbus_write_byte_data(chip->client,
> > - TSL2X7X_CMD_REG + i,
> > + int reg = TSL2X7X_CMD_REG + i;
> > +
> > + ret = i2c_smbus_write_byte_data(chip->client, reg,
> > *dev_reg++);
> > if (ret < 0) {
> > dev_err(&chip->client->dev,
> > - "failed on write to reg %d.\n", i);
> > + "%s: failed to write to register %x: %d\n",
> > + __func__, reg, ret);
> > return ret;
> > }
> > }
> > @@ -708,7 +715,8 @@ static int tsl2x7x_chip_on(struct iio_dev *indio_dev)
> > chip->tsl2x7x_chip_status = TSL2X7X_CHIP_WORKING;
> >
> > if (chip->settings.interrupts_en != 0) {
> > - dev_info(&chip->client->dev, "Setting Up Interrupt(s)\n");
> > + dev_info(&chip->client->dev, "%s: Setting up interrupt(s)\n",
> > + __func__);
> >
> > reg_val = TSL2X7X_CNTL_PWR_ON | TSL2X7X_CNTL_ADC_ENBL;
> > if (chip->settings.interrupts_en == 0x20 ||
> > @@ -819,8 +827,8 @@ static int tsl2x7x_prox_cal(struct iio_dev *indio_dev)
> >
> > if (chip->settings.prox_max_samples_cal > MAX_SAMPLES_CAL) {
> > dev_err(&chip->client->dev,
> > - "max prox samples cal is too big: %d\n",
> > - chip->settings.prox_max_samples_cal);
> > + "%s: prox_max_samples_cal %d is too big\n",
> > + __func__, chip->settings.prox_max_samples_cal);
> > chip->settings.prox_max_samples_cal = MAX_SAMPLES_CAL;
> > }
> >
> > @@ -845,8 +853,6 @@ static int tsl2x7x_prox_cal(struct iio_dev *indio_dev)
> > if (ret < 0)
> > return ret;
> > prox_history[i] = chip->prox_data;
> > - dev_info(&chip->client->dev, "2 i=%d prox data= %d\n",
> > - i, chip->prox_data);
> > }
> >
> > ret = tsl2x7x_chip_off(indio_dev);
> > @@ -857,12 +863,6 @@ static int tsl2x7x_prox_cal(struct iio_dev *indio_dev)
> > chip->settings.prox_max_samples_cal, cal);
> > chip->settings.prox_thres_high = (cal->max << 1) - cal->mean;
> >
> > - dev_info(&chip->client->dev, " cal min=%d mean=%d max=%d\n",
> > - cal->min, cal->mean, cal->max);
> > - dev_info(&chip->client->dev,
> > - "%s proximity threshold set to %d\n",
> > - chip->client->name, chip->settings.prox_thres_high);
> > -
> > /* back to the way they were */
> > chip->settings.interrupts_en = tmp_irq_settings;
> > if (current_state == TSL2X7X_CHIP_WORKING) {
> > @@ -1000,12 +1000,14 @@ static ssize_t in_illuminance0_lux_table_store(struct device *dev,
> > n = value[0];
> > if ((n % 3) || n < 6 ||
> > n > ((ARRAY_SIZE(chip->tsl2x7x_device_lux) - 1) * 3)) {
> > - dev_info(dev, "LUX TABLE INPUT ERROR 1 Value[0]=%d\n", n);
> > + dev_info(dev, "%s: lux table input error 1. n=%d\n",
> > + __func__, n);
> > return -EINVAL;
> > }
> >
> > if ((value[(n - 2)] | value[(n - 1)] | value[n]) != 0) {
> > - dev_info(dev, "LUX TABLE INPUT ERROR 2 Value[0]=%d\n", n);
> > + dev_info(dev, "%s: lux table input error 2. n=%d\n",
> > + __func__, n);
> dev_dbg or drop it.
>
> > return -EINVAL;
> > }
> >
> > @@ -1150,14 +1152,14 @@ static int tsl2x7x_write_event_value(struct iio_dev *indio_dev,
> > chip->settings.persistence &= 0xF0;
> > chip->settings.persistence |=
> > (filter_delay & 0x0F);
> > - dev_info(&chip->client->dev, "%s: ALS persistence = %d",
> > + dev_info(&chip->client->dev, "%s: ALS persistence = %d\n",
> > __func__, filter_delay);
> Again, dev_dbg at the most - or drop it.
>
> > } else {
> > chip->settings.persistence &= 0x0F;
> > chip->settings.persistence |=
> > ((filter_delay << 4) & 0xF0);
> > dev_info(&chip->client->dev,
> > - "%s: Proximity persistence = %d",
> > + "%s: Proximity persistence = %d\n",
> > __func__, filter_delay);
> > }
> > ret = 0;
> > @@ -1372,7 +1374,7 @@ static int tsl2x7x_write_raw(struct iio_dev *indio_dev,
> > chip->settings.als_time =
> > TSL2X7X_MAX_TIMER_CNT - (val2 / TSL2X7X_MIN_ITIME);
> >
> > - dev_info(&chip->client->dev, "%s: als time = %d",
> > + dev_info(&chip->client->dev, "%s: als time = %d\n",
> > __func__, chip->settings.als_time);
> Drop it.
> > break;
> > default:
> > @@ -1738,8 +1740,9 @@ static int tsl2x7x_probe(struct i2c_client *clientp,
> >
> > ret = i2c_smbus_write_byte(clientp, TSL2X7X_CMD_REG | TSL2X7X_CNTRL);
> > if (ret < 0) {
> > - dev_err(&clientp->dev, "write to cmd reg failed. err = %d\n",
> > - ret);
> > + dev_err(&clientp->dev,
> > + "%s: Failed to write to CMD register: %d\n",
> > + __func__, ret);
> > return ret;
> > }
> >
> > @@ -1773,7 +1776,7 @@ static int tsl2x7x_probe(struct i2c_client *clientp,
> > indio_dev);
> > if (ret) {
> > dev_err(&clientp->dev,
> > - "%s: irq request failed", __func__);
> > + "%s: IRQ request failed\n", __func__);
> > return ret;
> > }
> > }
> > @@ -1790,7 +1793,8 @@ static int tsl2x7x_probe(struct i2c_client *clientp,
> > return ret;
> > }
> >
> > - dev_info(&clientp->dev, "%s Light sensor found.\n", id->name);
> > + dev_info(&clientp->dev, "%s: %s Light sensor found.\n", __func__,
> > + id->name);
>
> Again, unnecessary logging. Definitely doesn't also want the function name.
> People 'might' care about whether the sensor is found, but not which function
> it is in.
>
> Jonathan
>
> >
> > return 0;
> > }
>
> --
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