V4L/DVB (13866): gspca - main: Add the cam flag 'no_urb_create'.

This flag permits subdrivers to create specific transfer URBs.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 8 insertions, 5 deletions

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 0e6a4ec0fec9..61be007e8fb3 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -607,11 +607,14 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev)
                 goto out;
         }
         for (;;) {
-                PDEBUG(D_STREAM, "init transfer alt %d", gspca_dev->alt);
-                ret = create_urbs(gspca_dev, ep);
-                if (ret < 0) {
-                        destroy_urbs(gspca_dev);
-                        goto out;
+                if (!gspca_dev->cam.no_urb_create) {
+                        PDEBUG(D_STREAM, "init transfer alt %d",
+                                gspca_dev->alt);
+                        ret = create_urbs(gspca_dev, ep);
+                        if (ret < 0) {
+                                destroy_urbs(gspca_dev);
+                                goto out;
+                        }
                 }
 
                 /* clear the bulk endpoint */