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staging:iio:ad7298: Fix linker error due to missing IIO kfifo buffer

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The ad7298 drivers buffer implementation uses the IIO kfifo buffer, so it needs
to select IIO_KFIFO_BUF. Otherwise (if no other driver selects the symbol) the
following linker error will occur:

drivers/built-in.o: In function `ad7298_register_ring_funcs_and_init':
	(.text+0x245cf2): undefined reference to `iio_kfifo_allocate'
drivers/built-in.o: In function `ad7298_register_ring_funcs_and_init':
	(.text+0x245d7d): undefined reference to `iio_kfifo_free'
drivers/built-in.o: In function `ad7298_ring_cleanup':
	(.text+0x245dcd): undefined reference to `iio_kfifo_free'

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lars-Peter Clausen 2012-06-11 15:09:21 +02:00 committed by Greg Kroah-Hartman
parent 1b8487368b
commit 33735a94af
1 changed files with 1 additions and 0 deletions
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1
drivers/staging/iio/adc/Kconfig
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@ -13,6 +13,7 @@ config AD7291
config AD7298
tristate "Analog Devices AD7298 ADC driver"
depends on SPI
select IIO_KFIFO_BUF if IIO_BUFFER
help
Say yes here to build support for Analog Devices AD7298
8 Channel ADC with temperature sensor.