On Sat, 3 Mar 2018 20:49:33 -0500
Brian Masney <masn...@onstation.org> wrote:
> There were three places where the same chunk of code was used to read
> the chip status. This patch creates a common function
> tsl2x7x_read_status() to reduce duplicate code. This patch also corrects
> tsl2x7x_event_handler() to properly check for an error after reading the
> chip status.
>
> Signed-off-by: Brian Masney <masn...@onstation.org>
Applied.
> ---
> drivers/staging/iio/light/tsl2x7x.c | 40
> ++++++++++++++++++++++---------------
> 1 file changed, 24 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/staging/iio/light/tsl2x7x.c
> b/drivers/staging/iio/light/tsl2x7x.c
> index c02db03ef369..6bb622816660 100644
> --- a/drivers/staging/iio/light/tsl2x7x.c
> +++ b/drivers/staging/iio/light/tsl2x7x.c
> @@ -293,6 +293,20 @@ static int tsl2x7x_clear_interrupts(struct tsl2X7X_chip
> *chip, int reg)
> return ret;
> }
>
> +static int tsl2x7x_read_status(struct tsl2X7X_chip *chip)
> +{
> + int ret;
> +
> + ret = i2c_smbus_read_byte_data(chip->client,
> + TSL2X7X_CMD_REG | TSL2X7X_STATUS);
> + if (ret < 0)
> + dev_err(&chip->client->dev,
> + "%s: failed to read STATUS register: %d\n", __func__,
> + ret);
> +
> + return ret;
> +}
> +
> /**
> * tsl2x7x_get_lux() - Reads and calculates current lux value.
> * @indio_dev: pointer to IIO device
> @@ -332,13 +346,10 @@ static int tsl2x7x_get_lux(struct iio_dev *indio_dev)
> goto out_unlock;
> }
>
> - ret = i2c_smbus_read_byte_data(chip->client,
> - TSL2X7X_CMD_REG | TSL2X7X_STATUS);
> - if (ret < 0) {
> - dev_err(&chip->client->dev,
> - "%s: Failed to read STATUS Reg\n", __func__);
> + ret = tsl2x7x_read_status(chip);
> + if (ret < 0)
> goto out_unlock;
> - }
> +
> /* is data new & valid */
> if (!(ret & TSL2X7X_STA_ADC_VALID)) {
> dev_err(&chip->client->dev,
> @@ -458,12 +469,9 @@ static int tsl2x7x_get_prox(struct iio_dev *indio_dev)
> return -EBUSY;
> }
>
> - ret = i2c_smbus_read_byte_data(chip->client,
> - TSL2X7X_CMD_REG | TSL2X7X_STATUS);
> - if (ret < 0) {
> - dev_err(&chip->client->dev, "i2c err=%d\n", ret);
> + ret = tsl2x7x_read_status(chip);
> + if (ret < 0)
> goto prox_poll_err;
> - }
>
> switch (chip->id) {
> case tsl2571:
> @@ -1396,13 +1404,13 @@ static irqreturn_t tsl2x7x_event_handler(int irq,
> void *private)
> struct tsl2X7X_chip *chip = iio_priv(indio_dev);
> s64 timestamp = iio_get_time_ns(indio_dev);
> int ret;
> - u8 value;
>
> - value = i2c_smbus_read_byte_data(chip->client,
> - TSL2X7X_CMD_REG | TSL2X7X_STATUS);
> + ret = tsl2x7x_read_status(chip);
> + if (ret < 0)
> + return ret;
>
> /* What type of interrupt do we need to process */
> - if (value & TSL2X7X_STA_PRX_INTR) {
> + if (ret & TSL2X7X_STA_PRX_INTR) {
> tsl2x7x_get_prox(indio_dev); /* freshen data for ABI */
> iio_push_event(indio_dev,
> IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY,
> @@ -1412,7 +1420,7 @@ static irqreturn_t tsl2x7x_event_handler(int irq, void
> *private)
> timestamp);
> }
>
> - if (value & TSL2X7X_STA_ALS_INTR) {
> + if (ret & TSL2X7X_STA_ALS_INTR) {
> tsl2x7x_get_lux(indio_dev); /* freshen data for ABI */
> iio_push_event(indio_dev,
> IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
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