V4L/DVB (8381): ov7670: fix compile warnings

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/ov7670.c

@@ -833,7 +833,7 @@ static int ov7670_store_cmatrix(struct i2c_client *client,
 		int matrix[CMATRIX_LEN])
 {
 	int i, ret;
-	unsigned char signbits;
+	unsigned char signbits = 0;
 
 	/*
 	 * Weird crap seems to exist in the upper part of
@@ -1009,7 +1009,7 @@ static unsigned char ov7670_abs_to_sm(unsigned char v)
 
 static int ov7670_t_brightness(struct i2c_client *client, int value)
 {
-	unsigned char com8, v;
+	unsigned char com8 = 0, v;
 	int ret;
 
 	ov7670_read(client, REG_COM8, &com8);
@@ -1022,7 +1022,7 @@ static int ov7670_t_brightness(struct i2c_client *client, int value)
 
 static int ov7670_q_brightness(struct i2c_client *client, __s32 *value)
 {
-	unsigned char v;
+	unsigned char v = 0;
 	int ret = ov7670_read(client, REG_BRIGHT, &v);
 
 	*value = ov7670_sm_to_abs(v);
@@ -1036,7 +1036,7 @@ static int ov7670_t_contrast(struct i2c_client *client, int value)
 
 static int ov7670_q_contrast(struct i2c_client *client, __s32 *value)
 {
-	unsigned char v;
+	unsigned char v = 0;
 	int ret = ov7670_read(client, REG_CONTRAS, &v);
 
 	*value = v;
@@ -1046,7 +1046,7 @@ static int ov7670_q_contrast(struct i2c_client *client, __s32 *value)
 static int ov7670_q_hflip(struct i2c_client *client, __s32 *value)
 {
 	int ret;
-	unsigned char v;
+	unsigned char v = 0;
 
 	ret = ov7670_read(client, REG_MVFP, &v);
 	*value = (v & MVFP_MIRROR) == MVFP_MIRROR;
@@ -1056,7 +1056,7 @@ static int ov7670_q_hflip(struct i2c_client *client, __s32 *value)
 
 static int ov7670_t_hflip(struct i2c_client *client, int value)
 {
-	unsigned char v;
+	unsigned char v = 0;
 	int ret;
 
 	ret = ov7670_read(client, REG_MVFP, &v);
@@ -1074,7 +1074,7 @@ static int ov7670_t_hflip(struct i2c_client *client, int value)
 static int ov7670_q_vflip(struct i2c_client *client, __s32 *value)
 {
 	int ret;
-	unsigned char v;
+	unsigned char v = 0;
 
 	ret = ov7670_read(client, REG_MVFP, &v);
 	*value = (v & MVFP_FLIP) == MVFP_FLIP;
@@ -1084,7 +1084,7 @@ static int ov7670_q_vflip(struct i2c_client *client, __s32 *value)
 
 static int ov7670_t_vflip(struct i2c_client *client, int value)
 {
-	unsigned char v;
+	unsigned char v = 0;
 	int ret;
 
 	ret = ov7670_read(client, REG_MVFP, &v);