V4L/DVB: gspca_sonixb: leave bridge gain at 1.0 when we have a sensor gain

Leave bridge gain at 1.0 when we have a sensor gain, while at it also
change the bridge gain setting code to write both registers in one go
saving us a usb transaction.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/gspca/sonixb.c

@@ -347,7 +347,7 @@ static const __u8 initOv7630[] = {
 };
 static const __u8 initOv7630_3[] = {
 	0x44, 0x44, 0x00, 0x1a, 0x20, 0x20, 0x20, 0x80,	/* r01 .. r08 */
-	0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,	/* r09 .. r10 */
+	0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* r09 .. r10 */
 	0x00, 0x02, 0x01, 0x0a,				/* r11 .. r14 */
 	0x28, 0x1e,			/* H & V sizes     r15 .. r16 */
 	0x68, 0x8f, MCK_INIT1,				/* r17 .. r19 */
@@ -465,7 +465,7 @@ static const __u8 pas202_sensor_init[][8] = {
 static const __u8 initTas5110c[] = {
 	0x44, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x11, 0x00, 0x00, 0x00,
 	0x00, 0x00,
-	0x00, 0x01, 0x00, 0x45, 0x09, 0x0a,
+	0x00, 0x00, 0x00, 0x45, 0x09, 0x0a,
 	0x16, 0x12, 0x60, 0x86, 0x2b,
 	0x14, 0x0a, 0x02, 0x02, 0x09, 0x07
 };
@@ -473,7 +473,7 @@ static const __u8 initTas5110c[] = {
 static const __u8 initTas5110d[] = {
 	0x44, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x11, 0x00, 0x00, 0x00,
 	0x00, 0x00,
-	0x00, 0x01, 0x00, 0x41, 0x09, 0x0a,
+	0x00, 0x00, 0x00, 0x41, 0x09, 0x0a,
 	0x16, 0x12, 0x60, 0x86, 0x2b,
 	0x14, 0x0a, 0x02, 0x02, 0x09, 0x07
 };
@@ -486,7 +486,7 @@ static const __u8 tas5110_sensor_init[][8] = {
 static const __u8 initTas5130[] = {
 	0x04, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x11, 0x00, 0x00, 0x00,
 	0x00, 0x00,
-	0x00, 0x01, 0x00, 0x68, 0x0c, 0x0a,
+	0x00, 0x00, 0x00, 0x68, 0x0c, 0x0a,
 	0x28, 0x1e, 0x60, COMP, MCK_INIT,
 	0x18, 0x10, 0x04, 0x03, 0x11, 0x0c
 };
@@ -697,19 +697,21 @@ static void setgain(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
 	__u8 gain;
-	__u8 rgb_value;
+	__u8 buf[2] = { 0, 0 };
+
+	if (sensor_data[sd->sensor].flags & F_GAIN) {
+		/* Use the sensor gain to do the actual gain */
+		setsensorgain(gspca_dev);
+		return;
+	}
 
 	gain = sd->gain >> 4;
 
 	/* red and blue gain */
-	rgb_value = gain << 4 | gain;
-	reg_w(gspca_dev, 0x10, &rgb_value, 1);
+	buf[0] = gain << 4 | gain;
 	/* green gain */
-	rgb_value = gain;
-	reg_w(gspca_dev, 0x11, &rgb_value, 1);
-
-	if (sensor_data[sd->sensor].flags & F_GAIN)
-		setsensorgain(gspca_dev);
+	buf[1] = gain;
+	reg_w(gspca_dev, 0x10, buf, 2);
 }
 
 static void setexposure(struct gspca_dev *gspca_dev)