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Commit 2d39059a authored by Hans de Goede's avatar Hans de Goede Committed by Mauro Carvalho Chehab
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[media] gspca - main: Avoid clobbering all bandwidth when mic in webcam 



Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarJean-François Moine <moinejf@free.fr>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 5dae603d

drivers/media/video/gspca/gspca.c

+17 −0
Original line number Original line Diff line number Diff line
@@ -726,6 +726,23 @@ static int build_isoc_ep_tb(struct gspca_dev *gspca_dev, 
		ep_tb++;

		ep_tb++;

	}

	}





	/*

	 * If the camera:

	 * has a usb audio class interface (a built in usb mic); and

	 * is a usb 1 full speed device; and

	 * uses the max full speed iso bandwidth; and

	 * and has more than 1 alt setting

	 * then skip the highest alt setting to spare bandwidth for the mic

	 */

	if (gspca_dev->audio &&

			gspca_dev->dev->speed == USB_SPEED_FULL &&

			last_bw >= 1000000 &&

			i > 1) {

		PDEBUG(D_STREAM, "dev has usb audio, skipping highest alt");

		i--;

		ep_tb--;

	}



	/* get the requested bandwidth and start at the highest atlsetting */

	/* get the requested bandwidth and start at the highest atlsetting */

	bandwidth = which_bandwidth(gspca_dev);

	bandwidth = which_bandwidth(gspca_dev);

	ep_tb--;

	ep_tb--;