linux-kernel - [PATCH] staging: iio: select IRQ_WORK for IIO_DUMMY

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Message-ID: <22609671.lgCfBiaFIf@wuerfel>
Date:	Sat, 17 Oct 2015 00:29:55 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Jonathan Cameron <jic23@...nel.org>, linux-iio@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Cristina Opriceana <cristina.opriceana@...il.com>,
	Daniel Baluta <daniel.baluta@...el.com>,
	devel@...verdev.osuosl.org, devel@...verdev.osuosl.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] staging: iio: select IRQ_WORK for IIO_DUMMY_EVGEN

The iio dummy code was recently changed to use irq_work_queue, but
that code is compiled into the kernel only if IRQ_WORK is set, so
we can get a link error here:

drivers/built-in.o: In function `iio_evgen_poke':
(.text+0x208a04): undefined reference to `irq_work_queue'

This changes the Kconfig file to match what other drivers do.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Fixes: fd2bb310ca3d ("Staging: iio: Move evgen interrupt generation to irq_work")
---
Found on ARM randconfig tests

diff --git a/drivers/staging/iio/Kconfig b/drivers/staging/iio/Kconfig
index 6d5b38d69578..9d7f0004d2d7 100644
--- a/drivers/staging/iio/Kconfig
+++ b/drivers/staging/iio/Kconfig
@@ -18,7 +18,8 @@ source "drivers/staging/iio/resolver/Kconfig"
 source "drivers/staging/iio/trigger/Kconfig"
 
 config IIO_DUMMY_EVGEN
-       tristate
+	tristate
+	select IRQ_WORK
 
 config IIO_SIMPLE_DUMMY
        tristate "An example driver with no hardware requirements"

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