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Message-Id: <20210520010550.31240-1-samirweng1979@163.com>
Date: Thu, 20 May 2021 09:05:50 +0800
From: samirweng1979 <samirweng1979@....com>
To: gustavoars@...nel.org, hslester96@...il.com, davem@...emloft.net
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
wengjianfeng <wengjianfeng@...ong.com>
Subject: [PATCH RESEND] NFC: st21nfca: remove unnecessary variable and labels
From: wengjianfeng <wengjianfeng@...ong.com>
assign vlue (EIO/EPROTO) to variable r, and goto exit label,
but just return r follow exit label, so we delete exit label,
and just replace with return sentence.
Signed-off-by: wengjianfeng <wengjianfeng@...ong.com>
---
drivers/nfc/st21nfca/dep.c | 59 ++++++++++++++--------------------------------
1 file changed, 18 insertions(+), 41 deletions(-)
diff --git a/drivers/nfc/st21nfca/dep.c b/drivers/nfc/st21nfca/dep.c
index 8874d60..1ec651e 100644
--- a/drivers/nfc/st21nfca/dep.c
+++ b/drivers/nfc/st21nfca/dep.c
@@ -196,38 +196,29 @@ static int st21nfca_tm_recv_atr_req(struct nfc_hci_dev *hdev,
skb_trim(skb, skb->len - 1);
- if (!skb->len) {
- r = -EIO;
- goto exit;
- }
+ if (!skb->len)
+ return -EIO;
- if (skb->len < ST21NFCA_ATR_REQ_MIN_SIZE) {
- r = -EPROTO;
- goto exit;
- }
+ if (skb->len < ST21NFCA_ATR_REQ_MIN_SIZE)
+ return -EPROTO;
atr_req = (struct st21nfca_atr_req *)skb->data;
- if (atr_req->length < sizeof(struct st21nfca_atr_req)) {
- r = -EPROTO;
- goto exit;
- }
+ if (atr_req->length < sizeof(struct st21nfca_atr_req))
+ return -EPROTO;
r = st21nfca_tm_send_atr_res(hdev, atr_req);
if (r)
- goto exit;
+ return r;
gb_len = skb->len - sizeof(struct st21nfca_atr_req);
r = nfc_tm_activated(hdev->ndev, NFC_PROTO_NFC_DEP_MASK,
NFC_COMM_PASSIVE, atr_req->gbi, gb_len);
if (r)
- goto exit;
-
- r = 0;
+ return r;
-exit:
- return r;
+ return 0;
}
static int st21nfca_tm_send_psl_res(struct nfc_hci_dev *hdev,
@@ -280,25 +271,18 @@ static int st21nfca_tm_recv_psl_req(struct nfc_hci_dev *hdev,
struct sk_buff *skb)
{
struct st21nfca_psl_req *psl_req;
- int r;
skb_trim(skb, skb->len - 1);
- if (!skb->len) {
- r = -EIO;
- goto exit;
- }
+ if (!skb->len)
+ return -EIO;
psl_req = (struct st21nfca_psl_req *)skb->data;
- if (skb->len < sizeof(struct st21nfca_psl_req)) {
- r = -EIO;
- goto exit;
- }
+ if (skb->len < sizeof(struct st21nfca_psl_req))
+ return -EIO;
- r = st21nfca_tm_send_psl_res(hdev, psl_req);
-exit:
- return r;
+ return st21nfca_tm_send_psl_res(hdev, psl_req);
}
int st21nfca_tm_send_dep_res(struct nfc_hci_dev *hdev, struct sk_buff *skb)
@@ -324,7 +308,6 @@ static int st21nfca_tm_recv_dep_req(struct nfc_hci_dev *hdev,
{
struct st21nfca_dep_req_res *dep_req;
u8 size;
- int r;
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
skb_trim(skb, skb->len - 1);
@@ -332,20 +315,16 @@ static int st21nfca_tm_recv_dep_req(struct nfc_hci_dev *hdev,
size = 4;
dep_req = (struct st21nfca_dep_req_res *)skb->data;
- if (skb->len < size) {
- r = -EIO;
- goto exit;
- }
+ if (skb->len < size)
+ return -EIO;
if (ST21NFCA_NFC_DEP_DID_BIT_SET(dep_req->pfb))
size++;
if (ST21NFCA_NFC_DEP_NAD_BIT_SET(dep_req->pfb))
size++;
- if (skb->len < size) {
- r = -EIO;
- goto exit;
- }
+ if (skb->len < size)
+ return -EIO;
/* Receiving DEP_REQ - Decoding */
switch (ST21NFCA_NFC_DEP_PFB_TYPE(dep_req->pfb)) {
@@ -364,8 +343,6 @@ static int st21nfca_tm_recv_dep_req(struct nfc_hci_dev *hdev,
skb_pull(skb, size);
return nfc_tm_data_received(hdev->ndev, skb);
-exit:
- return r;
}
static int st21nfca_tm_event_send_data(struct nfc_hci_dev *hdev,
--
1.9.1
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