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iio: light: fix kconfig dependency bug for VCNL4035

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commit 44a146a44f656fc03d368c1b9248d29a128cd053 upstream.

When VCNL4035 is enabled and IIO_BUFFER is disabled, it results in the
following Kbuild warning:

WARNING: unmet direct dependencies detected for IIO_TRIGGERED_BUFFER
  Depends on [n]: IIO [=y] && IIO_BUFFER [=n]
  Selected by [y]:
  - VCNL4035 [=y] && IIO [=y] && I2C [=y]

The reason is that VCNL4035 selects IIO_TRIGGERED_BUFFER without depending
on or selecting IIO_BUFFER while IIO_TRIGGERED_BUFFER depends on
IIO_BUFFER. This can also fail building the kernel.

Honor the kconfig dependency to remove unmet direct dependency warnings
and avoid any potential build failures.

Fixes: 55707294c4 ("iio: light: Add support for vishay vcnl4035")
Signed-off-by: Necip Fazil Yildiran <fazilyildiran@gmail.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=209883
Link: https://lore.kernel.org/r/20201102223523.572461-1-fazilyildiran@gmail.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Necip Fazil Yildiran 2020-11-03 01:35:24 +03:00 • committed by Greg Kroah-Hartman
commit 7f76c60813
1 changed files with 1 additions and 0 deletions
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1
drivers/iio/light/Kconfig
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@ -485,6 +485,7 @@ config VCNL4000
config VCNL4035
tristate "VCNL4035 combined ALS and proximity sensor"
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
select REGMAP_I2C
depends on I2C