libbase: unmask UART interrupt correctly

diff --git a/software/libbase/uart.c b/software/libbase/uart.c
index 760498340bcdf58f670f0de37026fad61cce93d9..57ed49226d85d248572b776bc95c4dff57466acb 100644 (file)
--- a/software/libbase/uart.c
+++ b/software/libbase/uart.c
@@ -121,7 +121,7 @@ void uart_init(void)
        CSR_UART_EV_ENABLE = UART_EV_TX | UART_EV_RX;
 
        mask = irq_getmask();
-       mask |= UART_INTERRUPT;
+       mask |= 1 << UART_INTERRUPT;
        irq_setmask(mask);
 }