4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> commit 0ff4230584320b2153752ba54e2e8edbd6addf2c upstream. In order to enable HSU DMA PCI driver, the HSU DMA Engine must be enabled. This add a check for that. Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx> Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/tty/serial/8250/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/tty/serial/8250/Kconfig +++ b/drivers/tty/serial/8250/Kconfig @@ -372,7 +372,7 @@ config SERIAL_8250_MID tristate "Support for serial ports on Intel MID platforms" depends on SERIAL_8250 && PCI select HSU_DMA if SERIAL_8250_DMA - select HSU_DMA_PCI if X86_INTEL_MID + select HSU_DMA_PCI if (HSU_DMA && X86_INTEL_MID) select RATIONAL help Selecting this option will enable handling of the extra features