v4l2_m2m: fix coverity issues

nyh163925 · nyh163925 · commit 78610b838c1e · 2026-02-09T14:05:59.000+08:00
uninit_use

Signed-off-by: niyinghao &lt;niyinghao@xiaomi.com&gt;
Change-Id: If9a0f6b280613be967f159cc9de70b0674fd3d20
diff --git a/drivers/video/v4l2_m2m.c b/drivers/video/v4l2_m2m.c
@@ -374,6 +374,7 @@ 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);
@@ -468,6 +469,7 @@ 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);
@@ -575,6 +577,7 @@ 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
`@@ -374,6 +374,7 @@ static int codec_querybuf(FAR struct file *filep,`
`374`	`374`	`return -EINVAL;`
`375`	`375`	`}`
`376`	`376`
	`377`	`+ memset(&format, 0, sizeof(format));`
`377`	`378`	`if (V4L2_TYPE_IS_OUTPUT(buf->type))`
`378`	`379`	`{`
`379`	`380`	`bufsize = CODEC_OUTPUT_G_BUFSIZE(cmng->codec, cfile->priv);`
`@@ -468,6 +469,7 @@ static int codec_qbuf(FAR struct file *filep,`
`468`	`469`	`return -EAGAIN;`
`469`	`470`	`}`
`470`	`471`
	`472`	`+ memset(&format, 0, sizeof(format));`
`471`	`473`	`if (V4L2_TYPE_IS_OUTPUT(buf->type))`
`472`	`474`	`{`
`473`	`475`	`CODEC_OUTPUT_G_FMT(cmng->codec, cfile->priv, &format);`
`@@ -575,6 +577,7 @@ static int codec_dqbuf(FAR struct file *filep,`
`575`	`577`	`return -EAGAIN;`
`576`	`578`	`}`
`577`	`579`
	`580`	`+ memset(&format, 0, sizeof(format));`
`578`	`581`	`if (V4L2_TYPE_IS_OUTPUT(buf->type))`
`579`	`582`	`{`
`580`	`583`	`CODEC_OUTPUT_G_FMT(cmng->codec, cfile->priv, &format);`