This is a note to let you know that I've just added the patch titled iio: light: fix kconfig dependency bug for VCNL4035 to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: iio-light-fix-kconfig-dependency-bug-for-vcnl4035.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 44a146a44f656fc03d368c1b9248d29a128cd053 Mon Sep 17 00:00:00 2001 From: Necip Fazil Yildiran <fazilyildiran@xxxxxxxxx> Date: Tue, 3 Nov 2020 01:35:24 +0300 Subject: iio: light: fix kconfig dependency bug for VCNL4035 From: Necip Fazil Yildiran <fazilyildiran@xxxxxxxxx> 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: 55707294c4eb ("iio: light: Add support for vishay vcnl4035") Signed-off-by: Necip Fazil Yildiran <fazilyildiran@xxxxxxxxx> Link: https://bugzilla.kernel.org/show_bug.cgi?id=209883 Link: https://lore.kernel.org/r/20201102223523.572461-1-fazilyildiran@xxxxxxxxx Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/iio/light/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -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 Patches currently in stable-queue which might be from fazilyildiran@xxxxxxxxx are queue-5.4/iio-light-fix-kconfig-dependency-bug-for-vcnl4035.patch queue-5.4/input-resistive-adc-touch-fix-kconfig-dependency-on-.patch