V4L/DVB (12229): gspca - main: Change the ISOC initialization mechanism.

- call a new subdriver function 'isoc_init' before chosing the first
  alternate setting.
- call a new subdriver function 'isoc_nego' when submitting the URBs failed.

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

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/media/video/gspca/gspca.h b/drivers/media/video/gspca/gspca.h
index 46c4effdfcd5..70b1fd830876 100644
--- a/drivers/media/video/gspca/gspca.h
+++ b/drivers/media/video/gspca/gspca.h
@@ -98,9 +98,11 @@ struct sd_desc {
 /* mandatory operations */
         cam_cf_op config;       /* called on probe */
         cam_op init;            /* called on probe and resume */
-        cam_op start;           /* called on stream on */
+        cam_op start;           /* called on stream on after URBs creation */
         cam_pkt_op pkt_scan;
 /* optional operations */
+        cam_op isoc_init;       /* called on stream on before getting the EP */
+        cam_op isoc_nego;       /* called when URB submit failed with NOSPC */
         cam_v_op stopN;         /* called on stream off - main alt */
         cam_v_op stop0;         /* called on stream off & disconnect - alt 0 */
         cam_v_op dq_callback;   /* called when a frame has been dequeued */
@@ -178,6 +180,7 @@ struct gspca_dev {
         __u8 iface;                     /* USB interface number */
         __u8 alt;                       /* USB alternate setting */
         __u8 nbalt;                     /* number of USB alternate settings */
+        u16 pkt_size;                   /* ISOC packet size */
 };
 
 int gspca_dev_probe(struct usb_interface *intf,