[PATCH, RESEND] staging: iio: select IRQ_WORK for IIO_DUMMY_EVGEN

[Arnd Bergmann]

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@xxxxxxxx>
Fixes: fd2bb310ca3d ("Staging: iio: Move evgen interrupt generation to irq_work")
Acked-by: Daniel Baluta <daniel.baluta@xxxxxxxxx>
---
I submitted the patch before and it was accepted, but then it
apparently got lost when the driver was moved out of staging,
and the bug came back with today's linux-next


diff --git a/drivers/iio/dummy/Kconfig b/drivers/iio/dummy/Kconfig
index e8676aa97d62..71805ced1aae 100644
--- a/drivers/iio/dummy/Kconfig
+++ b/drivers/iio/dummy/Kconfig
@@ -5,7 +5,8 @@ menu "IIO dummy driver"
 	depends on IIO
 
 config IIO_DUMMY_EVGEN
-       tristate
+	select IRQ_WORK
+	tristate
 
 config IIO_SIMPLE_DUMMY
        tristate "An example driver with no hardware requirements"

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