If NO_DMA=y: drivers/built-in.o: In function `ifx_spi_free_device': ifx6x60.c:(.text+0x96d9a): undefined reference to `dma_free_coherent' drivers/built-in.o: In function `ifx_spi_spi_probe': ifx6x60.c:(.text+0x978a2): undefined reference to `dma_alloc_coherent' While DMA is optional in this driver, and is used only if ifx_modem_platform_data.use_dma is set, there are currently no in-tree users of ifx_modem_platform_data (and thus of this driver), so just make it depend on HAS_DMA. Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> --- drivers/tty/serial/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index f8120c1bde14760f..daee183386368149 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -1349,7 +1349,7 @@ config SERIAL_ALTERA_UART_CONSOLE config SERIAL_IFX6X60 tristate "SPI protocol driver for Infineon 6x60 modem (EXPERIMENTAL)" - depends on GPIOLIB && SPI + depends on GPIOLIB && SPI && HAS_DMA help Support for the IFX6x60 modem devices on Intel MID platforms. -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html