[RFC 04/24] qemu-options.hx: clarify default audio backend selection

[marcandre.lureau@redhat.com]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-options.hx | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/qemu-options.hx b/qemu-options.hx
index fca2b7bc74..4aa6c8829c 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -894,11 +894,16 @@ DEF("audiodev", HAS_ARG, QEMU_OPTION_audiodev,
     QEMU_ARCH_ALL)
 SRST
 ``-audiodev [driver=]driver,id=id[,prop[=value][,...]]``
-    Adds a new audio backend driver identified by id. There are global
-    and driver specific properties. Some values can be set differently
-    for input and output, they're marked with ``in|out.``. You can set
-    the input's property with ``in.prop`` and the output's property with
-    ``out.prop``. For example:
+    Adds a new audio backend driver identified by id.
+
+    If no audio backend is specified, QEMU will attempt to load a
+    default one. The selected -display option may influence which backend
+    is used.
+
+    There are global and driver specific properties. Some values can be
+    set differently for input and output, they're marked with ``in|out.``.
+    You can set the input's property with ``in.prop`` and the output's
+    property with ``out.prop``. For example:
 
     ::
 
@@ -2170,8 +2175,9 @@ DEF("display", HAS_ARG, QEMU_OPTION_display,
     , QEMU_ARCH_ALL)
 SRST
 ``-display type``
-    Select type of display to use. Use ``-display help`` to list the available
-    display types. Valid values for type are
+    Select type of display to use. It affects the default audio backend selection.
+
+    Use ``-display help`` to list the available display types. Valid values for type are
 
     ``spice-app[,gl=on|off]``
         Start QEMU as a Spice server and launch the default Spice client
-- 
2.51.1