hw/mips/mips_malta: Don't create "null" chardevs for serial devices

Following commit 12051d82f004024, UART devices should handle
being passed a NULL pointer chardev, so we don't need to
create "null" backends in board code. Remove the code that
does this and updates serial_hds[].

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180420145249.32435-5-peter.maydell@linaro.org

diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c
index f6513a4..49fe7a0 100644 (file)
--- a/hw/mips/mips_malta.c
+++ b/hw/mips/mips_malta.c
@@ -1056,11 +1056,6 @@ void mips_malta_init(MachineState *machine)
 
     /* FPGA */
 
-    /* Make sure the second serial port is associated with a device. */
-    if (!serial_hds[2]) {
-        serial_hds[2] = qemu_chr_new("fpga-uart", "null");
-    }
-
     /* The CBUS UART is attached to the MIPS CPU INT2 pin, ie interrupt 4 */
     malta_fpga_init(system_memory, FPGA_ADDRESS, cbus_irq, serial_hds[2]);