linux-kernel - [PATCH 5.13 708/800] iio: dummy: Fix build error when CONFIG_IIO_TRIGGERED

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Date:   Mon, 12 Jul 2021 08:12:11 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hulk Robot <hulkci@...wei.com>,
        Wei Yongjun <weiyongjun1@...wei.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.13 708/800] iio: dummy: Fix build error when CONFIG_IIO_TRIGGERED_BUFFER is not set

From: Wei Yongjun <weiyongjun1@...wei.com>

[ Upstream commit 94588c1bf1c8701392e1dc105c670d0d2fc7676a ]

Gcc reports build error when CONFIG_IIO_TRIGGERED_BUFFER is not set:

riscv64-linux-gnu-ld: drivers/iio/dummy/iio_simple_dummy_buffer.o: in function `iio_simple_dummy_configure_buffer':
iio_simple_dummy_buffer.c:(.text+0x2b0): undefined reference to `iio_triggered_buffer_setup_ext'
riscv64-linux-gnu-ld: drivers/iio/dummy/iio_simple_dummy_buffer.o: in function `.L0 ':
iio_simple_dummy_buffer.c:(.text+0x2fc): undefined reference to `iio_triggered_buffer_cleanup'

Fix it by select IIO_TRIGGERED_BUFFER for config IIO_SIMPLE_DUMMY_BUFFER.

Fixes: 738f6ba11800 ("iio: dummy: iio_simple_dummy_buffer: use triggered buffer core calls")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/iio/dummy/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iio/dummy/Kconfig b/drivers/iio/dummy/Kconfig
index 5c5c2f8c55f3..1f46cb9e51b7 100644
--- a/drivers/iio/dummy/Kconfig
+++ b/drivers/iio/dummy/Kconfig
@@ -34,6 +34,7 @@ config IIO_SIMPLE_DUMMY_BUFFER
 	select IIO_BUFFER
 	select IIO_TRIGGER
 	select IIO_KFIFO_BUF
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Add buffered data capture to the simple dummy driver.
 
-- 
2.30.2