@@ -19,6 +19,7 @@
#include <linux/init.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
+#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/serial_8250.h>
@@ -370,7 +370,7 @@ config SERIAL_8250_LPC18XX
serial port, say Y to this option. If unsure, say Y.
config SERIAL_8250_MT6577
- bool "Mediatek serial port support"
+ tristate "Mediatek serial port support"
depends on SERIAL_8250 && ARCH_MEDIATEK
help
If you have a Mediatek based board and want to use the
The Mediatek 8250 driver has a 'bool' Kconfig symbol, but that breaks when SERIAL_8250 is a loadable module: drivers/tty/built-in.o: In function `mtk8250_set_termios': 8250_ingenic.c:(.text+0x1bee8): undefined reference to `serial8250_do_set_termios' 8250_ingenic.c:(.text+0x1bf10): undefined reference to `uart_get_baud_rate' 8250_ingenic.c:(.text+0x1c09c): undefined reference to `uart_get_divisor' drivers/tty/built-in.o: In function `mtk8250_do_pm': 8250_ingenic.c:(.text+0x1c0d0): undefined reference to `serial8250_do_pm' drivers/tty/built-in.o: In function `mtk8250_probe': 8250_ingenic.c:(.text+0x1c2e4): undefined reference to `serial8250_register_8250_port' serial/8250/8250_mtk.c:287:242: error: data definition has no type or storage class [-Werror] serial/8250/8250_mtk.c:287:122: error: 'mtk8250_platform_driver_init' defined but not used [-Werror=unused-function] This changes the symbol to a 'tristate', so the dependency on SERIAL_8250 also works when that is set to 'm'. To actually build the driver, we also need to include <linux/module.h>. Note that the driver uses builtin_platform_driver() and implements no .remove() callback, so unloading the module is not possible. Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/tty/serial/8250/8250_mtk.c | 1 + drivers/tty/serial/8250/Kconfig | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) -- 2.7.0 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html