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Input: ads7846 - use PTR_ERR_OR_ZERO()

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The PTR_ERR_OR_ZERO() helper function checks if a pointer contains an
errno code and returns it or return 0 if that's not the case. Use the
helper instead of open coding the same logic in the driver. This was
found with make coccicheck that complains with the following warning:

drivers/input/touchscreen/ads7846.c:532:1-3: WARNING: PTR_ERR_OR_ZERO can be used

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Javier Martinez Canillas 2015-10-02 11:20:40 -07:00 committed by Dmitry Torokhov
parent e5e66ed00e
commit c4517f82d2
1 changed files with 1 additions and 3 deletions
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4
drivers/input/touchscreen/ads7846.c
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@ -529,10 +529,8 @@ static int ads784x_hwmon_register(struct spi_device *spi, struct ads7846 *ts)
ts->hwmon = hwmon_device_register_with_groups(&spi->dev, spi->modalias,
ts, ads7846_attr_groups);
if (IS_ERR(ts->hwmon))
return PTR_ERR(ts->hwmon);
return 0;
return PTR_ERR_OR_ZERO(ts->hwmon);
}
static void ads784x_hwmon_unregister(struct spi_device *spi,