V4L/DVB (13919): gspca - zc3xx: Fix hdcs2020 probe.

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/zc3xx.c b/drivers/media/video/gspca/zc3xx.c
index 386854a..24bd3a9 100644
--- a/drivers/media/video/gspca/zc3xx.c
+++ b/drivers/media/video/gspca/zc3xx.c
@@ -6339,6 +6339,7 @@
 	}
 
 	start_2wr_probe(dev, 0x08);		/* HDCS2020 */
+	i2c_write(gspca_dev, 0x1c, 0x00, 0x00);
 	i2c_write(gspca_dev, 0x15, 0xaa, 0x00);
 	retword = i2c_read(gspca_dev, 0x15);
 	if (retword != 0)