From e78567d227ecd40543508342ba39a3dfba5af14f Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 6 Dec 2010 06:53:05 -0300 Subject: [PATCH] [media] gspca/sn9c20x: Test if sensor is a OV sensor Instead of just assuming a ov9650 sensor based on USB ID, double-check it, by reading the sensor ID. Acked-by: Jean-Francois Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sn9c20x.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/media/video/gspca/sn9c20x.c b/drivers/media/video/gspca/sn9c20x.c index 6b155ae3a746..1e0f219188ac 100644 --- a/drivers/media/video/gspca/sn9c20x.c +++ b/drivers/media/video/gspca/sn9c20x.c @@ -1224,8 +1224,17 @@ static int i2c_r2(struct gspca_dev *gspca_dev, u8 reg, u16 *val) static int ov9650_init_sensor(struct gspca_dev *gspca_dev) { int i; + u16 id; struct sd *sd = (struct sd *) gspca_dev; + if (i2c_r2(gspca_dev, 0x1c, &id) < 0) + return -EINVAL; + + if (id != 0x7fa2) { + err("sensor id for ov9650 doesn't match (0x%04x)", id); + return -ENODEV; + } + for (i = 0; i < ARRAY_SIZE(ov9650_init); i++) { if (i2c_w1(gspca_dev, ov9650_init[i].reg, ov9650_init[i].val) < 0) { -- 2.30.2