drivers: video: fix uninitialized struct

Zero-initialize fmt to fix Coverity.

CID:525180
CID 524760
CID 524753
CID 524781
CID 524755

Signed-off-by: sudarsan N <sudarsansamy2002@gmail.com>

Author: sudarsan-22

drivers/video/mt9m114.c

@@ -528,7 +528,11 @@ static int mt9m114_init_controls(const struct device *dev)
 static int mt9m114_init(const struct device *dev)
 {
 	const struct mt9m114_config *cfg = dev->config;
-	struct video_format fmt;
+	struct video_format fmt = {
+		.pixelformat = VIDEO_PIX_FMT_RGB565,
+		.width = 480,
+		.height = 272,
+	};
 	uint16_t val;
 	int ret;
 
@@ -561,11 +565,6 @@ static int mt9m114_init(const struct device *dev)
 		return ret;
 	}
 
-	/* Set default format to 480x272 RGB565 */
-	fmt.pixelformat = VIDEO_PIX_FMT_RGB565;
-	fmt.width = 480;
-	fmt.height = 272;
-
 	ret = mt9m114_set_fmt(dev, &fmt);
 	if (ret) {
 		LOG_ERR("Unable to configure default format");

drivers/video/ov5640.c

@@ -1324,7 +1324,7 @@ static int ov5640_init_controls(const struct device *dev)
 static int ov5640_init(const struct device *dev)
 {
 	const struct ov5640_config *cfg = dev->config;
-	struct video_format fmt;
+	struct video_format fmt = {0};
 	uint16_t chip_id;
 	int ret;
 

drivers/video/ov7670.c

@@ -489,7 +489,11 @@ static int ov7670_init(const struct device *dev)
 	const struct ov7670_config *config = dev->config;
 	int ret, i;
 	uint8_t pid;
-	struct video_format fmt;
+	struct video_format fmt = {
+		.pixelformat = VIDEO_PIX_FMT_RGB565,
+		.width = 320,
+		.height = 240,
+	};
 	const struct ov7670_reg *reg;
 
 	if (!i2c_is_ready_dt(&config->bus)) {
@@ -563,10 +567,6 @@ static int ov7670_init(const struct device *dev)
 	/* Delay after reset */
 	k_msleep(5);
 
-	/* Set default camera format (QVGA, YUYV) */
-	fmt.pixelformat = VIDEO_PIX_FMT_RGB565;
-	fmt.width = 320;
-	fmt.height = 240;
 	ret = ov7670_set_fmt(dev, &fmt);
 	if (ret < 0) {
 		return ret;

drivers/video/ov9655.c

@@ -326,7 +326,12 @@ static int ov9655_get_fmt(const struct device *dev, struct video_format *fmt)
 static int ov9655_init(const struct device *dev)
 {
 	const struct ov9655_config *config = dev->config;
-	struct video_format fmt;
+	/* Set default camera format (QQVGA, YUYV) */
+	struct video_format fmt = {
+		.pixelformat = VIDEO_PIX_FMT_YUYV,
+		.width = 160,
+		.height = 120,
+	};
 	uint32_t pid;
 	int ret;
 
@@ -380,11 +385,6 @@ static int ov9655_init(const struct device *dev)
 		return -ENODEV;
 	}
 
-	/* Set default camera format (QQVGA, YUYV) */
-	fmt.pixelformat = VIDEO_PIX_FMT_YUYV;
-	fmt.width = 160;
-	fmt.height = 120;
-
 	return ov9655_set_fmt(dev, &fmt);
 }
 

drivers/video/video_emul_imager.c

@@ -344,7 +344,11 @@ static int emul_imager_init_controls(const struct device *dev)
 
 int emul_imager_init(const struct device *dev)
 {
-	struct video_format fmt;
+	struct video_format fmt = {
+		.pixelformat = fmts[0].pixelformat,
+		.width = fmts[0].width_min,
+		.height = fmts[0].height_min,
+	};
 	uint8_t sensor_id;
 	int ret;
 
@@ -365,10 +369,6 @@ int emul_imager_init(const struct device *dev)
 		return ret;
 	}
 
-	fmt.pixelformat = fmts[0].pixelformat;
-	fmt.width = fmts[0].width_min;
-	fmt.height = fmts[0].height_min;
-
 	ret = emul_imager_set_fmt(dev, &fmt);
 	if (ret < 0) {
 		LOG_ERR("Failed to set to default format %x %ux%u",