linux-kernel - [PATCH 3/9] usb: host: oxu210hp-hcd: use list_for_each_entry

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Message-Id: <0406b836801888d85598c0cc94fe09a73eb37de4.1450455485.git.geliangtang@163.com>
Date:	Sat, 19 Dec 2015 00:34:28 +0800
From:	Geliang Tang <geliangtang@....com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:	Geliang Tang <geliangtang@....com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/9] usb: host: oxu210hp-hcd: use list_for_each_entry_safe

Use list_for_each_entry_safe() instead of list_for_each_safe() to
simplify the code.

Signed-off-by: Geliang Tang <geliangtang@....com>
---
 drivers/usb/host/oxu210hp-hcd.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index bc74aca..4e4d601 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -981,7 +981,7 @@ static int qh_schedule(struct oxu_hcd *oxu, struct ehci_qh *qh);
 static unsigned qh_completions(struct oxu_hcd *oxu, struct ehci_qh *qh)
 {
 	struct ehci_qtd *last = NULL, *end = qh->dummy;
-	struct list_head *entry, *tmp;
+	struct ehci_qtd	*qtd, *tmp;
 	int stopped;
 	unsigned count = 0;
 	int do_status = 0;
@@ -1006,12 +1006,10 @@ static unsigned qh_completions(struct oxu_hcd *oxu, struct ehci_qh *qh)
 	 * then let the queue advance.
 	 * if queue is stopped, handles unlinks.
 	 */
-	list_for_each_safe(entry, tmp, &qh->qtd_list) {
-		struct ehci_qtd	*qtd;
+	list_for_each_entry_safe(qtd, tmp, &qh->qtd_list, qtd_list) {
 		struct urb *urb;
 		u32 token = 0;
 
-		qtd = list_entry(entry, struct ehci_qtd, qtd_list);
 		urb = qtd->urb;
 
 		/* Clean up any state from previous QTD ...*/
@@ -1174,14 +1172,11 @@ halt:
  * used for cleanup after errors, before HC sees an URB's TDs.
  */
 static void qtd_list_free(struct oxu_hcd *oxu,
-				struct urb *urb, struct list_head *qtd_list)
+				struct urb *urb, struct list_head *head)
 {
-	struct list_head *entry, *temp;
-
-	list_for_each_safe(entry, temp, qtd_list) {
-		struct ehci_qtd	*qtd;
+	struct ehci_qtd	*qtd, *temp;
 
-		qtd = list_entry(entry, struct ehci_qtd, qtd_list);
+	list_for_each_entry_safe(qtd, temp, head, qtd_list) {
 		list_del(&qtd->qtd_list);
 		oxu_qtd_free(oxu, qtd);
 	}
-- 
2.5.0


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