From 4d3f6850cac63145b119ffe60cfb197e5d7e77cd Mon Sep 17 00:00:00 2001
From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Thu, 5 Jul 2012 18:02:27 +0200
Subject: [PATCH] v4l2: handle return value -ENOTTY for unimplemented
 VIDIOC_G_PARM

Newer kernels return -ENOTTY, older kernels return -EINVAL if the ioctl
is not implemented. With this patch, GStreamer handles both cases.

https://bugzilla.gnome.org/show_bug.cgi?id=698825
---
 sys/v4l2/gstv4l2object.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/v4l2/gstv4l2object.c b/sys/v4l2/gstv4l2object.c
index 1479b4185b..dd9f79b4a0 100644
--- a/sys/v4l2/gstv4l2object.c
+++ b/sys/v4l2/gstv4l2object.c
@@ -2461,7 +2461,7 @@ invalid_pixelformat:
 get_parm_failed:
   {
     /* it's possible that this call is not supported */
-    if (errno != EINVAL) {
+    if (errno != EINVAL && errno != ENOTTY) {
       GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
           (_("Could not get parameters on device '%s'"),
               v4l2object->videodev), GST_ERROR_SYSTEM);