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Commit e59ac747 authored by Geliang Tang's avatar Geliang Tang Committed by Greg Kroah-Hartman
Browse files

staging: emxx_udc: use list_first_entry_or_null() 



Simplify the code with list_first_entry_or_null().

Signed-off-by: default avatarGeliang Tang <geliangtang@163.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e7cfb390

drivers/staging/emxx_udc/emxx_udc.c

+5 −25
Original line number Diff line number Diff line
@@ -1285,11 +1285,7 @@ static void _nbu2ss_restert_transfer(struct nbu2ss_ep *ep) 
	bool	bflag = FALSE;

	struct nbu2ss_req *req;



	if (list_empty(&ep->queue))

		req = NULL;

	else

		req = list_entry(ep->queue.next, struct nbu2ss_req, queue);



	req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue);

	if (!req)

		return;
@@ -1784,11 +1780,7 @@ static inline int _nbu2ss_ep0_in_data_stage(struct nbu2ss_udc *udc) 
	struct nbu2ss_req	*req;

	struct nbu2ss_ep	*ep = &udc->ep[0];



	if (list_empty(&ep->queue))

		req = NULL;

	else

		req = list_entry(ep->queue.next, struct nbu2ss_req, queue);



	req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue);

	if (!req)

		req = &udc->ep0_req;
@@ -1811,11 +1803,7 @@ static inline int _nbu2ss_ep0_out_data_stage(struct nbu2ss_udc *udc) 
	struct nbu2ss_req	*req;

	struct nbu2ss_ep	*ep = &udc->ep[0];



	if (list_empty(&ep->queue))

		req = NULL;

	else

		req = list_entry(ep->queue.next, struct nbu2ss_req, queue);



	req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue);

	if (!req)

		req = &udc->ep0_req;
@@ -1838,11 +1826,7 @@ static inline int _nbu2ss_ep0_status_stage(struct nbu2ss_udc *udc) 
	struct nbu2ss_req	*req;

	struct nbu2ss_ep	*ep = &udc->ep[0];



	if (list_empty(&ep->queue))

		req = NULL;

	else

		req = list_entry(ep->queue.next, struct nbu2ss_req, queue);



	req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue);

	if (!req) {

		req = &udc->ep0_req;

		if (req->req.complete)
@@ -2145,11 +2129,7 @@ static inline void _nbu2ss_epn_int(struct nbu2ss_udc *udc, u32 epnum) 
	/* Interrupt Clear */

	_nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_STATUS, ~(u32)status);



	if (list_empty(&ep->queue))

		req = NULL;

	else

		req = list_entry(ep->queue.next, struct nbu2ss_req, queue);



	req = list_first_entry_or_null(&ep->queue, struct nbu2ss_req, queue);

	if (!req) {

		/* pr_warn("=== %s(%d) req == NULL\n", __func__, epnum); */

		return;