v4l2_m2m: fix coverity issues

nyh163925 · nyh163925 · commit 8609d69e361f · 2026-02-04T15:43:00.000+08:00
CID 8306850: uninit_use

Change-Id: Ic9fd562b0aacf9f7e3951e1cc4b6f03ceba2be5a
Signed-off-by: niyinghao &lt;niyinghao@xiaomi.com&gt;
diff --git a/drivers/video/v4l2_m2m.c b/drivers/video/v4l2_m2m.c
@@ -373,6 +373,7 @@ static int codec_querybuf(FAR struct file *filep,
       return -EINVAL;
     }
 
+  memset(&format, 0, sizeof(format));
   if (V4L2_TYPE_IS_OUTPUT(buf->type))
     {
       bufsize = CODEC_OUTPUT_G_BUFSIZE(cmng->codec, cfile->priv);
@@ -467,6 +468,7 @@ static int codec_qbuf(FAR struct file *filep,
       return -EAGAIN;
     }
 
+  memset(&format, 0, sizeof(format));
   if (V4L2_TYPE_IS_OUTPUT(buf->type))
     {
       CODEC_OUTPUT_G_FMT(cmng->codec, cfile->priv, &format);
@@ -569,6 +571,7 @@ static int codec_dqbuf(FAR struct file *filep,
       return -EAGAIN;
     }
 
+  memset(&format, 0, sizeof(format));
   if (V4L2_TYPE_IS_OUTPUT(buf->type))
     {
       CODEC_OUTPUT_G_FMT(cmng->codec, cfile->priv, &format);

Original file line number	Diff line number	Diff line change
`@@ -373,6 +373,7 @@ static int codec_querybuf(FAR struct file *filep,`
`373`	`373`	`return -EINVAL;`
`374`	`374`	`}`
`375`	`375`
	`376`	`+ memset(&format, 0, sizeof(format));`
`376`	`377`	`if (V4L2_TYPE_IS_OUTPUT(buf->type))`
`377`	`378`	`{`
`378`	`379`	`bufsize = CODEC_OUTPUT_G_BUFSIZE(cmng->codec, cfile->priv);`
`@@ -467,6 +468,7 @@ static int codec_qbuf(FAR struct file *filep,`
`467`	`468`	`return -EAGAIN;`
`468`	`469`	`}`
`469`	`470`
	`471`	`+ memset(&format, 0, sizeof(format));`
`470`	`472`	`if (V4L2_TYPE_IS_OUTPUT(buf->type))`
`471`	`473`	`{`
`472`	`474`	`CODEC_OUTPUT_G_FMT(cmng->codec, cfile->priv, &format);`
`@@ -569,6 +571,7 @@ static int codec_dqbuf(FAR struct file *filep,`
`569`	`571`	`return -EAGAIN;`
`570`	`572`	`}`
`571`	`573`
	`574`	`+ memset(&format, 0, sizeof(format));`
`572`	`575`	`if (V4L2_TYPE_IS_OUTPUT(buf->type))`
`573`	`576`	`{`
`574`	`577`	`CODEC_OUTPUT_G_FMT(cmng->codec, cfile->priv, &format);`