[Qemu-trivial] [PATCH v3 1/1] qtest: Fix the bug about disable vnc causes "make check" fail

[Kewei Yu <keweihk@gmail.com>]

When we disable vnc from "./configure", QEMU can't use the vnc option.
So qtest can't use the "vnc -none ", otherwise "make check" fails.

Signed-off-by: Kewei Yu <keweihk@gmail.com>
---
 v2: Consolidate VNC macro's #ifdef'ery to one central point (tests/libqtest.c).
 v3: Fix the spelling and terminology error: "s/disabling/disable; s/the\ qemu/QEMU; s/hangs/fails;"
---

 tests/fdc-test.c |    5 +----
 tests/ide-test.c |    3 ---
 tests/libqtest.c |    8 ++++++++
 3 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/tests/fdc-test.c b/tests/fdc-test.c
index 38b5b17..37096dc 100644
--- a/tests/fdc-test.c
+++ b/tests/fdc-test.c
@@ -518,7 +518,6 @@ static void fuzz_registers(void)
 int main(int argc, char **argv)
 {
     const char *arch = qtest_get_arch();
-    char *cmdline;
     int fd;
     int ret;
 
@@ -538,9 +537,7 @@ int main(int argc, char **argv)
     /* Run the tests */
     g_test_init(&argc, &argv, NULL);
 
-    cmdline = g_strdup_printf("-vnc none ");
-
-    qtest_start(cmdline);
+    qtest_start(NULL);
     qtest_irq_intercept_in(global_qtest, "ioapic");
     qtest_add_func("/fdc/cmos", test_cmos);
     qtest_add_func("/fdc/no_media_on_start", test_no_media_on_start);
diff --git a/tests/ide-test.c b/tests/ide-test.c
index d5cec5a..4a0d97f 100644
--- a/tests/ide-test.c
+++ b/tests/ide-test.c
@@ -380,7 +380,6 @@ static void test_bmdma_no_busmaster(void)
 static void test_bmdma_setup(void)
 {
     ide_test_start(
-        "-vnc none "
         "-drive file=%s,if=ide,serial=%s,cache=writeback "
         "-global ide-hd.ver=%s",
         tmp_path, "testdisk", "version");
@@ -410,7 +409,6 @@ static void test_identify(void)
     int ret;
 
     ide_test_start(
-        "-vnc none "
         "-drive file=%s,if=ide,serial=%s,cache=writeback "
         "-global ide-hd.ver=%s",
         tmp_path, "testdisk", "version");
@@ -455,7 +453,6 @@ static void test_flush(void)
     uint8_t data;
 
     ide_test_start(
-        "-vnc none "
         "-drive file=blkdebug::%s,if=ide,cache=writeback",
         tmp_path);
 
diff --git a/tests/libqtest.c b/tests/libqtest.c
index 359d571..921391c 100644
--- a/tests/libqtest.c
+++ b/tests/libqtest.c
@@ -35,6 +35,12 @@
 
 #define MAX_IRQ 256
 
+#ifdef CONFIG_VNC
+static const char *qtest_vnc_param = "-vnc none ";
+#else
+static const char *qtest_vnc_param = NULL;
+#endif
+
 QTestState *global_qtest;
 
 struct QTestState
@@ -136,8 +142,10 @@ QTestState *qtest_init(const char *extra_args)
                                   "-pidfile %s "
                                   "-machine accel=qtest "
                                   "-display none "
+                                  "%s"
                                   "%s", qemu_binary, s->socket_path,
                                   s->qmp_socket_path, pid_file,
+                                  qtest_vnc_param ?: "",
                                   extra_args ?: "");
         execlp("/bin/sh", "sh", "-c", command, NULL);
         exit(1);
-- 
1.7.1