linux-kernel - [PATCH] iio: adc: STM32_DFSDM_ADC should depend on HAS

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Message-Id: <1517318506-14664-1-git-send-email-geert@linux-m68k.org>
Date:   Tue, 30 Jan 2018 14:21:46 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Jonathan Cameron <jic23@...nel.org>,
        Arnaud Pouliquen <arnaud.pouliquen@...com>,
        Mark Brown <broonie@...nel.org>
Cc:     linux-iio@...r.kernel.org, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH] iio: adc: STM32_DFSDM_ADC should depend on HAS_DMA

If NO_DMA=y:

    ERROR: "bad_dma_ops" [drivers/iio/adc/stm32-dfsdm-adc.ko] undefined!

Add a dependency on HAS_DMA to fix this.

Fixes: e2e6771c64625165 ("IIO: ADC: add STM32 DFSDM sigma delta ADC support")
Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
 drivers/iio/adc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 39e3b345a6c84033..d976c64107c8e9fd 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -683,6 +683,7 @@ config STM32_DFSDM_CORE
 config STM32_DFSDM_ADC
 	tristate "STMicroelectronics STM32 dfsdm adc"
 	depends on (ARCH_STM32 && OF) || COMPILE_TEST
+	depends on HAS_DMA
 	select STM32_DFSDM_CORE
 	select REGMAP_MMIO
 	select IIO_BUFFER_HW_CONSUMER
-- 
2.7.4