qdev: Fix device_add DRIVER,help to print to monitor

Help on device properties gets printed to stdout instead of the
monitor.  If you have the monitor anywhere else, no help for you.
Broken when commit e1043d674d "qdev: use object_property_help()"
accidentally switched from qemu_printf() to printf().  Switch right
back.

Fixes: e1043d674d792ff64aebae1a3eafc08b38a8a085
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200714160202.3121879-2-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry picked from commit 029afc4e76041e1a320530d97f99122a1b3d5da2)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

diff --git a/qdev-monitor.c b/qdev-monitor.c
index 9833b33549690257b01653ee7a8dac2b6d5c541e..6bf6339ff5ec22e22ff212df2f3eaaaa64a4fea4 100644 (file)
--- a/qdev-monitor.c
+++ b/qdev-monitor.c
@@ -299,7 +299,7 @@ int qdev_device_help(QemuOpts *opts)
     }
     g_ptr_array_sort(array, (GCompareFunc)qemu_pstrcmp0);
     for (i = 0; i < array->len; i++) {
-        printf("%s\n", (char *)array->pdata[i]);
+        qemu_printf("%s\n", (char *)array->pdata[i]);
     }
     g_ptr_array_set_free_func(array, g_free);
     g_ptr_array_free(array, true);