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Message-ID: <20221110214729.ls5ixav5kxpeftk7@device>
Date:   Thu, 10 Nov 2022 16:47:29 -0500
From:   Paul Gazzillo <paul@...zz.com>
To:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Shreeya Patel <shreeya.patel@...labora.com>,
        Zhigang Shi <Zhigang.Shi@...eon.com>,
        Dmitry Osipenko <dmitry.osipenko@...labora.com>
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/1]: iio: light: rpr0521: add missing Kconfig dependencies

Fix an implicit declaration of function error for rpr0521 under some configs

When CONFIG_RPR0521 is enabled without CONFIG_IIO_TRIGGERED_BUFFER,
the build results in "implicit declaration of function" errors, e.g.,
  drivers/iio/light/rpr0521.c:434:3: error: implicit declaration of function
           'iio_trigger_poll_chained' [-Werror=implicit-function-declaration]
    434 |   iio_trigger_poll_chained(data->drdy_trigger0);
        |   ^~~~~~~~~~~~~~~~~~~~~~~~

This fix adds select dependencies to RPR0521's configuration declaration.

Signed-off-by: Paul Gazzillo <paul@...zz.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216678
---
V1 -> V2: Cleaned up commit message per reviewer comments and added link
          to bug report.

 drivers/iio/light/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig
index 7cf6e8490123..0d4447df7200 100644
--- a/drivers/iio/light/Kconfig
+++ b/drivers/iio/light/Kconfig
@@ -293,6 +293,8 @@ config RPR0521
 	tristate "ROHM RPR0521 ALS and proximity sensor driver"
 	depends on I2C
 	select REGMAP_I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say Y here if you want to build support for ROHM's RPR0521
 	  ambient light and proximity sensor device.
-- 
2.25.1

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