Commit 47aaca96 authored by Jean-Francois Moine's avatar Jean-Francois Moine Committed by Mauro Carvalho Chehab
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V4L/DVB (13866): gspca - main: Add the cam flag 'no_urb_create'. 



This flag permits subdrivers to create specific transfer URBs.

Signed-off-by: default avatarJean-Francois Moine <moinejf@free.fr>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent db870875

drivers/media/video/gspca/gspca.c

+8 −5
Original line number Diff line number Diff line
@@ -607,12 +607,15 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev) 
		goto out;

	}

	for (;;) {

		PDEBUG(D_STREAM, "init transfer alt %d", gspca_dev->alt);

		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 */

		if (gspca_dev->cam.bulk)

drivers/media/video/gspca/gspca.h

+6 −5
Original line number Diff line number Diff line
@@ -54,20 +54,21 @@ struct framerates { 


/* 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;