commit a5a08302d44a8b1a8c5819b1411002f85bb5f847
author Artyom Tarasenko <atar4qemu@gmail.com> Mon Jan 23 22:08:59 2017 +0100
committer Artyom Tarasenko <atar4qemu@gmail.com> Sun Feb 26 22:46:08 2017 +0100
tree 167194774b341a867f43b86a39e2f14216e93cf2
parent 5e3a549498ab6c55465419f003be74cb33836267

niagara: check if a serial port is available

Reported-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>

hw/sparc64/niagara.c

diff --git a/hw/sparc64/niagara.c b/hw/sparc64/niagara.c
index edde86e..9a8d610 100644
--- a/hw/sparc64/niagara.c
+++ b/hw/sparc64/niagara.c
@@ -158,9 +158,10 @@
             exit(1);
         }
     }
-    serial_mm_init(sysmem, NIAGARA_UART_BASE, 0, NULL, 115200,
-                   serial_hds[0], DEVICE_BIG_ENDIAN);
-
+    if (serial_hds[0]) {
+        serial_mm_init(sysmem, NIAGARA_UART_BASE, 0, NULL, 115200,
+                       serial_hds[0], DEVICE_BIG_ENDIAN);
+    }
     empty_slot_init(NIAGARA_IOBBASE, NIAGARA_IOBSIZE);
     sun4v_rtc_init(NIAGARA_RTC_BASE);
 }