qv4l2: reduce the minimum number of buffers to 2

The pwc driver sets the number of buffers to 2, so fails with our too
conservative check against a minimum of 3 buffers.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

diff --git a/utils/qv4l2/qv4l2.cpp b/utils/qv4l2/qv4l2.cpp
index 2931cae..9d11a46 100644 (file)
--- a/utils/qv4l2/qv4l2.cpp
+++ b/utils/qv4l2/qv4l2.cpp
@@ -239,7 +239,7 @@ bool ApplicationWindow::startCapture(unsigned buffer_size)
                        break;
                }
 
-               if (req.count < 3) {
+               if (req.count < 2) {
                        error("Too few buffers");
                        reqbufs_mmap_cap(req);
                        break;
@@ -293,7 +293,7 @@ bool ApplicationWindow::startCapture(unsigned buffer_size)
                        break;
                }
 
-               if (req.count < 3) {
+               if (req.count < 2) {
                        error("Too few buffers");
                        reqbufs_user_cap(req);
                        break;