linux-kernel - Re: [PATCH] rtl8712:Fix checkpatch warning

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Date:	Tue, 30 Jun 2015 09:59:01 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Ravi Teja Darbha <ravi2j@...il.com>
Cc:	Larry.Finger@...inger.net, florian.c.schilhabel@...glemail.com,
	gregkh@...uxfoundation.org, mahfouz.saif.elyazal@...il.com,
	vthakkar1994@...il.com, haggai.eran@...il.com,
	krinkin.m.u@...il.com, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rtl8712:Fix checkpatch warning

On Tue, Jun 30, 2015 at 01:27:47AM +0530, Ravi Teja Darbha wrote:
> 
> 1. Fix line over 80 characters warning.
> 2. The checkpatch warning at line 499 seems to be false positive.
> WARNING: else is not generally useful after a break or return
> #499: FILE: rtl8712_recv.c:499:
> +            return false;
> +        else
> 
> while(condition1) {
>     if(condition2)
>         foo();
>     else if(condition3)
>         return false;
>     else
>         break;
> }
> 
> The else condition here cannot be eliminated
You can try something like this to eliminate the else:

diff --git a/drivers/staging/rtl8712/rtl8712_recv.c b/drivers/staging/rtl8712/rtl8712_recv.c
index fcb8c61..165161b 100644
--- a/drivers/staging/rtl8712/rtl8712_recv.c
+++ b/drivers/staging/rtl8712/rtl8712_recv.c
@@ -492,12 +492,13 @@ static int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl,
 	while (end_of_queue_search(phead, plist) == false) {
 		pnextrframe = LIST_CONTAINOR(plist, union recv_frame, u);
 		pnextattrib = &pnextrframe->u.hdr.attrib;
-		if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
+		if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num)) {
 			plist = plist->next;
+			continue;
+		}
 		else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
 			return false;
-		else
-			break;
+		break;
 	}
 	list_del_init(&(prframe->u.hdr.list));
 	list_add_tail(&(prframe->u.hdr.list), plist);

regards
sudip
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