[media] gspca - sn9c20x: Don't do sensor update before the capture is started

Telling the bridge to update the sensor when setting the exposure or the gain
is not needed when the image transfer is not started.

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

diff --git a/drivers/media/video/gspca/sn9c20x.c b/drivers/media/video/gspca/sn9c20x.c
index c5b42e4ac9b48e670c59a37f2ee636363fb1d71c..da2904a891aa78ed07faaab4da60bd0cbea59e5c 100644 (file)
--- a/drivers/media/video/gspca/sn9c20x.c
+++ b/drivers/media/video/gspca/sn9c20x.c
@@ -1644,9 +1644,12 @@ static void set_exposure(struct gspca_dev *gspca_dev)
 {
        struct sd *sd = (struct sd *) gspca_dev;
        u8 exp[8] = {sd->i2c_intf, sd->i2c_addr,
-                               0x00, 0x00, 0x00, 0x00, 0x00, 0x1e};
+                               0x00, 0x00, 0x00, 0x00, 0x00, 0x10};
        int expo;
 
+       if (gspca_dev->streaming)
+               exp[7] = 0x1e;
+
        expo = sd->ctrls[EXPOSURE].val;
        switch (sd->sensor) {
        case SENSOR_OV7660:
@@ -1683,9 +1686,12 @@ static void set_gain(struct gspca_dev *gspca_dev)
 {
        struct sd *sd = (struct sd *) gspca_dev;
        u8 gain[8] = {sd->i2c_intf, sd->i2c_addr,
-                               0x00, 0x00, 0x00, 0x00, 0x00, 0x1d};
+                               0x00, 0x00, 0x00, 0x00, 0x00, 0x10};
        int g;
 
+       if (gspca_dev->streaming)
+               gain[7] = 0x15;         /* or 1d ? */
+
        g = sd->ctrls[GAIN].val;
        switch (sd->sensor) {
        case SENSOR_OV7660: