vl.c: new function serial_max_hds()

Create a new function serial_max_hds() which returns the number of
serial ports defined by the user. This is needed only by spapr.

This allows us to remove the MAX_SERIAL_PORTS define.

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: 20180420145249.32435-14-peter.maydell@linaro.org

1 files changed, 5 insertions, 0 deletions

diff --git a/vl.c b/vl.c
index a8a98c5a37..616956adf1 100644
--- a/vl.c
+++ b/vl.c
@@ -2524,6 +2524,11 @@ Chardev *serial_hd(int i)
     return NULL;
 }
 
+int serial_max_hds(void)
+{
+    return num_serial_hds;
+}
+
 static int parallel_parse(const char *devname)
 {
     static int index = 0;