From: Tong Zhang <ztong0001@gmail.com>
Date: Thu, 20 Aug 2020 16:52:40 +0000 (+0200)
Subject: media: pvrusb2: fix parsing error
X-Git-Tag: v5.10-rc1~175^2~538
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ab0e9fa1579d5e372822038e9d2a6d21c164ede6;p=thirdparty%2Fkernel%2Flinux.git

media: pvrusb2: fix parsing error

pvr2_std_str_to_id() returns 0 on failure and 1 on success,
however the caller is checking failure case using <0

Acked-by: Mike Isely <isely@pobox.com>
Co-developed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---

diff --git a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c
index 1cfb7cf64131a..f4a727918e352 100644
--- a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c
@@ -864,10 +864,9 @@ static int ctrl_std_sym_to_val(struct pvr2_ctrl *cptr,
 			       const char *bufPtr,unsigned int bufSize,
 			       int *mskp,int *valp)
 {
-	int ret;
 	v4l2_std_id id;
-	ret = pvr2_std_str_to_id(&id,bufPtr,bufSize);
-	if (ret < 0) return ret;
+	if (!pvr2_std_str_to_id(&id, bufPtr, bufSize))
+		return -EINVAL;
 	if (mskp) *mskp = id;
 	if (valp) *valp = id;
 	return 0;