linux-kernel - [PATCH v2 2/3] usb: dwc3: cleanup with list_first_entry_or

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Message-Id: <1474214595-9349-3-git-send-email-yamada.masahiro@socionext.com>
Date:   Mon, 19 Sep 2016 01:03:14 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-usb@...r.kernel.org
Cc:     Felipe Balbi <balbi@...nel.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/3] usb: dwc3: cleanup with list_first_entry_or_null()

The combo of list_empty() check and return list_first_entry()
can be replaced with list_first_entry_or_null().

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

 drivers/usb/dwc3/gadget.h | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h
index e4a1d97..3129bcf 100644
--- a/drivers/usb/dwc3/gadget.h
+++ b/drivers/usb/dwc3/gadget.h
@@ -62,10 +62,7 @@ struct dwc3;
 
 static inline struct dwc3_request *next_request(struct list_head *list)
 {
-	if (list_empty(list))
-		return NULL;
-
-	return list_first_entry(list, struct dwc3_request, list);
+	return list_first_entry_or_null(list, struct dwc3_request, list);
 }
 
 static inline void dwc3_gadget_move_started_request(struct dwc3_request *req)
-- 
1.9.1