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>
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 0e6a4ec..61be007 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -607,11 +607,14 @@
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 */
diff --git a/drivers/media/video/gspca/gspca.h b/drivers/media/video/gspca/gspca.h
index f0b4cbc..790dad7 100644
--- a/drivers/media/video/gspca/gspca.h
+++ b/drivers/media/video/gspca/gspca.h
@@ -54,20 +54,21 @@
/* device information - set at probe time */
struct cam {
- int bulk_size; /* buffer size when image transfer by bulk */
const struct v4l2_pix_format *cam_mode; /* size nmodes */
- char nmodes;
const struct framerates *mode_framerates; /* must have size nmode,
* just like cam_mode */
- __u8 bulk_nurbs; /* number of URBs in bulk mode
+ u32 bulk_size; /* buffer size when image transfer by bulk */
+ u32 input_flags; /* value for ENUM_INPUT status flags */
+ u8 nmodes; /* size of cam_mode */
+ u8 no_urb_create; /* don't create transfer URBs */
+ u8 bulk_nurbs; /* number of URBs in bulk mode
* - cannot be > MAX_NURBS
* - when 0 and bulk_size != 0 means
* 1 URB and submit done by subdriver */
u8 bulk; /* image transfer by 0:isoc / 1:bulk */
u8 npkt; /* number of packets in an ISOC message
* 0 is the default value: 32 packets */
- u32 input_flags; /* value for ENUM_INPUT status flags */
- char reverse_alts; /* Alt settings are in high to low order */
+ u8 reverse_alts; /* Alt settings are in high to low order */
};
struct gspca_dev;