Input: resistive-adc-touch - fix kconfig dependency on IIO_BUFFER
[ Upstream commit5.4-rM2-2.2.x-imx-squashed676650d007
] When TOUCHSCREEN_ADC is enabled and IIO_BUFFER is disabled, it results in the following Kbuild warning: WARNING: unmet direct dependencies detected for IIO_BUFFER_CB Depends on [n]: IIO [=y] && IIO_BUFFER [=n] Selected by [y]: - TOUCHSCREEN_ADC [=y] && !UML && INPUT [=y] && INPUT_TOUCHSCREEN [=y] && IIO [=y] The reason is that TOUCHSCREEN_ADC selects IIO_BUFFER_CB without depending on or selecting IIO_BUFFER while IIO_BUFFER_CB 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:aa132ffb6b
("input: touchscreen: resistive-adc-touch: add generic resistive ADC touchscreen") Signed-off-by: Necip Fazil Yildiran <fazilyildiran@gmail.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20201102221504.541279-1-fazilyildiran@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -96,6 +96,7 @@ config TOUCHSCREEN_AD7879_SPI
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config TOUCHSCREEN_ADC
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tristate "Generic ADC based resistive touchscreen"
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depends on IIO
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select IIO_BUFFER
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select IIO_BUFFER_CB
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help
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Say Y here if you want to use the generic ADC
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