[media] gspca - sonixj: Simplify and clarify the hv7131r probe function

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 9 insertions, 9 deletions

diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c
index e23de57e2c73..901ca81e81e1 100644
--- a/drivers/media/video/gspca/sonixj.c
+++ b/drivers/media/video/gspca/sonixj.c
@@ -1598,22 +1598,22 @@ static void i2c_w_seq(struct gspca_dev *gspca_dev,
         }
 }
 
+/* check the ID of the hv7131 sensor */
+/* this sequence is needed because it activates the sensor */
 static void hv7131r_probe(struct gspca_dev *gspca_dev)
 {
-        i2c_w1(gspca_dev, 0x02, 0);                     /* sensor wakeup */
+        i2c_w1(gspca_dev, 0x02, 0);             /* sensor wakeup */
         msleep(10);
-        reg_w1(gspca_dev, 0x02, 0x66);                  /* Gpio on */
+        reg_w1(gspca_dev, 0x02, 0x66);          /* Gpio on */
         msleep(10);
-        i2c_r(gspca_dev, 0, 5);                         /* read sensor id */
-        if (gspca_dev->usb_buf[0] == 0x02
+        i2c_r(gspca_dev, 0, 5);                 /* read sensor id */
+        if (gspca_dev->usb_buf[0] == 0x02       /* chip ID (02 is R) */
             && gspca_dev->usb_buf[1] == 0x09
-            && gspca_dev->usb_buf[2] == 0x01
-            && gspca_dev->usb_buf[3] == 0x00
-            && gspca_dev->usb_buf[4] == 0x00) {
-                PDEBUG(D_PROBE, "Sensor sn9c102P HV7131R found");
+            && gspca_dev->usb_buf[2] == 0x01) {
+                PDEBUG(D_PROBE, "Sensor HV7131R found");
                 return;
         }
-        PDEBUG(D_PROBE, "Sensor 0x%02x 0x%02x 0x%02x - sn9c102P not found",
+        warn("Erroneous HV7131R ID 0x%02x 0x%02x 0x%02x",
                 gspca_dev->usb_buf[0], gspca_dev->usb_buf[1],
                 gspca_dev->usb_buf[2]);
 }