linux-kernel - [PATCH] drivers: iio: adc: ad777x depends on CRC8

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Message-Id: <20241028162937.2171535-1-arnd@kernel.org>
Date: Mon, 28 Oct 2024 16:29:15 +0000
From: Arnd Bergmann <arnd@...nel.org>
To: Jonathan Cameron <jic23@...nel.org>,
	Ramona Alexandra Nechita <ramona.nechita@...log.com>
Cc: Arnd Bergmann <arnd@...db.de>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Nuno Sa <nuno.sa@...log.com>,
	linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] drivers: iio: adc: ad777x depends on CRC8

From: Arnd Bergmann <arnd@...db.de>

The newly added driver fails to link when CONFIG_CRC8 is not set:

ld.lld-20: error: undefined symbol: crc8_populate_msb
ld.lld-20: error: undefined symbol: crc8
>>>               vmlinux.o:(ad7779_spi_read)

Select this from Kconfig as we do for other drivers like it.

Fixes: cc20fa9e9ad4 ("drivers: iio: adc: add support for ad777x family")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/iio/adc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index d8abe28eec89..849c90203071 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -290,6 +290,7 @@ config AD7768_1
 config AD7779
 	tristate "Analog Devices AD7779 ADC driver"
 	depends on SPI
+	select CRC8
 	select IIO_BUFFER
 	help
 	  Say yes here to build support for Analog Devices AD777X family
-- 
2.39.5