[PATCH 01/11] usb: mtu3: remove unnecessary pointer checks

[Chunfeng Yun]

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....@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