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From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Felipe Balbi <balbi@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Matthias Brugger <matthias.bgg@gmail.com>,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	<linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>,
	Eddie Hung <eddie.hung@mediatek.com>
Subject: [PATCH 01/11] usb: mtu3: remove unnecessary pointer checks
Date: Mon, 27 Jul 2020 15:14:50 +0800	[thread overview]
Message-ID: <1595834101-13094-1-git-send-email-chunfeng.yun@mediatek.com> (raw)

The class driver will ensure the parameters are valid
pointers before call the hook function of usb_ep_ops,
so no need check them again.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 drivers/usb/mtu3/mtu3_gadget.c | 25 ++++++-------------------
 1 file changed, 6 insertions(+), 19 deletions(-)

diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c
index f93732e..6b26cb8 100644
--- a/drivers/usb/mtu3/mtu3_gadget.c
+++ b/drivers/usb/mtu3/mtu3_gadget.c
@@ -263,23 +263,15 @@ void mtu3_free_request(struct usb_ep *ep, struct usb_request *req)
 static int mtu3_gadget_queue(struct usb_ep *ep,
 		struct usb_request *req, gfp_t gfp_flags)
 {
-	struct mtu3_ep *mep;
-	struct mtu3_request *mreq;
-	struct mtu3 *mtu;
+	struct mtu3_ep *mep = to_mtu3_ep(ep);
+	struct mtu3_request *mreq = to_mtu3_request(req);
+	struct mtu3 *mtu = mep->mtu;
 	unsigned long flags;
 	int ret = 0;
 
-	if (!ep || !req)
-		return -EINVAL;
-
 	if (!req->buf)
 		return -ENODATA;
 
-	mep = to_mtu3_ep(ep);
-	mtu = mep->mtu;
-	mreq = to_mtu3_request(req);
-	mreq->mtu = mtu;
-
 	if (mreq->mep != mep)
 		return -EINVAL;
 
@@ -303,6 +295,7 @@ static int mtu3_gadget_queue(struct usb_ep *ep,
 		return -ESHUTDOWN;
 	}
 
+	mreq->mtu = mtu;
 	mreq->request.actual = 0;
 	mreq->request.status = -EINPROGRESS;
 
@@ -335,11 +328,11 @@ static int mtu3_gadget_dequeue(struct usb_ep *ep, struct usb_request *req)
 	struct mtu3_ep *mep = to_mtu3_ep(ep);
 	struct mtu3_request *mreq = to_mtu3_request(req);
 	struct mtu3_request *r;
+	struct mtu3 *mtu = mep->mtu;
 	unsigned long flags;
 	int ret = 0;
-	struct mtu3 *mtu = mep->mtu;
 
-	if (!ep || !req || mreq->mep != mep)
+	if (mreq->mep != mep)
 		return -EINVAL;
 
 	dev_dbg(mtu->dev, "%s : req=%p\n", __func__, req);
@@ -379,9 +372,6 @@ static int mtu3_gadget_ep_set_halt(struct usb_ep *ep, int value)
 	unsigned long flags;
 	int ret = 0;
 
-	if (!ep)
-		return -EINVAL;
-
 	dev_dbg(mtu->dev, "%s : %s...", __func__, ep->name);
 
 	spin_lock_irqsave(&mtu->lock, flags);
@@ -424,9 +414,6 @@ static int mtu3_gadget_ep_set_wedge(struct usb_ep *ep)
 {
 	struct mtu3_ep *mep = to_mtu3_ep(ep);
 
-	if (!ep)
-		return -EINVAL;
-
 	mep->wedged = 1;
 
 	return usb_ep_set_halt(ep);
-- 
1.9.1

             reply	other threads:[~2020-07-27  7:16 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-27  7:14 Chunfeng Yun [this message]
2020-07-27  7:14 ` [PATCH 02/11] usb: mtu3: fix macro for maximum number of packets Chunfeng Yun
2020-07-27  7:14 ` [PATCH 03/11] usb: mtu3: reinitialize CSR registers Chunfeng Yun
2020-07-27  7:14 ` [PATCH 04/11] usb: mtu3: clear interrupts status when disable interrupts Chunfeng Yun
2020-07-27  7:14 ` [PATCH 05/11] usb: mtu3: introduce a funtion to check maximum speed Chunfeng Yun
2020-07-27  7:14 ` [PATCH 06/11] usb: mtu3: add ->udc_set_speed() Chunfeng Yun
2020-07-27  7:14 ` [PATCH 07/11] usb: mtu3: remove repeated error log Chunfeng Yun
2020-07-27  7:14 ` [PATCH 08/11] usb: mtu3: remove useless member @busy in mtu3_ep struct Chunfeng Yun
2020-07-27  7:14 ` [PATCH 09/11] usb: mtu3: use MTU3_EP_WEDGE flag Chunfeng Yun
2020-07-27  7:14 ` [PATCH 10/11] usb: mtu3: clear dual mode of u3port when disable device Chunfeng Yun
2020-07-27  8:07   ` Sergei Shtylyov
2020-07-28  6:05     ` Chunfeng Yun
2020-07-27  7:15 ` [PATCH 11/11] usb: mtu3: simplify mtu3_req_complete() Chunfeng Yun

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