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>
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@ -607,11 +607,14 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev)
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goto out;
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}
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for (;;) {
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PDEBUG(D_STREAM, "init transfer alt %d", gspca_dev->alt);
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ret = create_urbs(gspca_dev, ep);
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if (ret < 0) {
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destroy_urbs(gspca_dev);
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goto out;
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if (!gspca_dev->cam.no_urb_create) {
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PDEBUG(D_STREAM, "init transfer alt %d",
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gspca_dev->alt);
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ret = create_urbs(gspca_dev, ep);
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if (ret < 0) {
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destroy_urbs(gspca_dev);
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goto out;
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}
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}
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/* clear the bulk endpoint */
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@ -54,20 +54,21 @@ struct framerates {
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/* device information - set at probe time */
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struct cam {
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int bulk_size; /* buffer size when image transfer by bulk */
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const struct v4l2_pix_format *cam_mode; /* size nmodes */
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char nmodes;
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const struct framerates *mode_framerates; /* must have size nmode,
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* just like cam_mode */
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__u8 bulk_nurbs; /* number of URBs in bulk mode
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u32 bulk_size; /* buffer size when image transfer by bulk */
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u32 input_flags; /* value for ENUM_INPUT status flags */
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u8 nmodes; /* size of cam_mode */
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u8 no_urb_create; /* don't create transfer URBs */
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u8 bulk_nurbs; /* number of URBs in bulk mode
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* - cannot be > MAX_NURBS
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* - when 0 and bulk_size != 0 means
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* 1 URB and submit done by subdriver */
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u8 bulk; /* image transfer by 0:isoc / 1:bulk */
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u8 npkt; /* number of packets in an ISOC message
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* 0 is the default value: 32 packets */
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u32 input_flags; /* value for ENUM_INPUT status flags */
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char reverse_alts; /* Alt settings are in high to low order */
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u8 reverse_alts; /* Alt settings are in high to low order */
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};
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struct gspca_dev;
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