lkml.org 
[lkml]   [2020]   [Nov]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] Input: touchscreen: fix kconfig dependency bug for TOUCHSCREEN_ADC
Date
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: aa132ffb6b0a ("input: touchscreen: resistive-adc-touch: add generic resistive ADC touchscreen")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=209881
Signed-off-by: Necip Fazil Yildiran <fazilyildiran@gmail.com>
---
drivers/input/touchscreen/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index f012fe746df0..cc18f54ea887 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -96,6 +96,7 @@ config TOUCHSCREEN_AD7879_SPI
config TOUCHSCREEN_ADC
tristate "Generic ADC based resistive touchscreen"
depends on IIO
+ select IIO_BUFFER
select IIO_BUFFER_CB
help
Say Y here if you want to use the generic ADC
--
2.25.1
\
 
 \ /
  Last update: 2020-11-02 23:16    [W:0.050 / U:0.324 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site