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-rw-r--r--drivers/tty/serial/Makefile3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index 712732b43917..0080cc362e09 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -92,3 +92,6 @@ obj-$(CONFIG_SERIAL_ARC) += arc_uart.o
obj-$(CONFIG_SERIAL_RP2) += rp2.o
obj-$(CONFIG_SERIAL_FSL_LPUART) += fsl_lpuart.o
obj-$(CONFIG_SERIAL_MEN_Z135) += men_z135_uart.o
+
+# GPIOLIB helpers for modem control lines
+obj-$(CONFIG_SERIAL_MCTRL_GPIO) += serial_mctrl_gpio.o