Hi Geert,

On 10/06/2016 03:55 PM, Geert Uytterhoeven wrote:
If NO_DMA=y:

    drivers/built-in.o: In function `stm32_serial_remove':
    stm32-usart.c:(.text+0xcea1a): undefined reference to `bad_dma_ops'
    stm32-usart.c:(.text+0xcea7a): undefined reference to `bad_dma_ops'

Add a dependency on HAS_DMA to fix this.

Signed-off-by: Geert Uytterhoeven <ge...@linux-m68k.org>
---
 drivers/tty/serial/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index c7831407a882d2bb..25c1d7bc010043b1 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1625,6 +1625,7 @@ config SERIAL_SPRD_CONSOLE
 config SERIAL_STM32
        tristate "STMicroelectronics STM32 serial port support"
        select SERIAL_CORE
+       depends on HAS_DMA
        depends on ARM || COMPILE_TEST
        help
          This driver is for the on-chip Serial Controller on

I sent same kind of patch this morning (but mine have a bad copy paste).
I will abandon my patch.

However for this one:
Acked-by: Alexandre Torgue <alexandre.tor...@st.com>

regards
Alex

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