[PATCH 3/6] serial: mid8250: select CONFIG_RATIONAL

[Arnd Bergmann <arnd@arndb.de>]

The Intel MID support got split out from the PCI 8250 driver,
and that now causes a build error when no other driver selects
CONFIG_RATIONAL:

drivers/built-in.o: In function `mid8250_set_termios':
(.text+0x77418): undefined reference to `rational_best_approximation'

This adds an explicit 'select' like the combined driver had before.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: d9eda9bab237 ("serial: 8250_pci: Intel MID UART support to its own driver")
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/tty/serial/8250/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
index e6f5e12a2d83..6412f1455beb 100644
--- a/drivers/tty/serial/8250/Kconfig
+++ b/drivers/tty/serial/8250/Kconfig
@@ -373,6 +373,7 @@ config SERIAL_8250_MID
 	depends on SERIAL_8250 && PCI
 	select HSU_DMA if SERIAL_8250_DMA
 	select HSU_DMA_PCI if X86_INTEL_MID
+	select RATIONAL
 	help
 	  Selecting this option will enable handling of the extra features
 	  present on the UART found on Intel Medfield SOC and various other
-- 
2.1.0.rc2