linux-kernel - [PATCH] staging: rtl8723au: change typecast to match type returned by htons()

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Message-Id: <1415650025-16403-1-git-send-email-cmruffin@gmail.com>
Date:	Mon, 10 Nov 2014 15:07:05 -0500
From:	Chris Ruffin <cmruffin@...il.com>
To:	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
	devel@...verdev.osuosl.org, Jes Sorensen <Jes.Sorensen@...hat.com>,
	Larry Finger <Larry.Finger@...inger.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Chris Ruffin <cmruffin@...il.com>
Subject: [PATCH] staging: rtl8723au: change typecast to match type returned by htons()

Using a u16 pointer typecast for a result from htons() results in the following warning from sparse:

drivers/staging/rtl8723au/core/rtw_xmit.c:1279:36: warning: incorrect type in assignment (different base types)
drivers/staging/rtl8723au/core/rtw_xmit.c:1279:36:    expected unsigned short [unsigned] [short] [usertype] <noident>
drivers/staging/rtl8723au/core/rtw_xmit.c:1279:36:    got restricted __be16 [usertype] <noident>

This patch fixes the issue by using an endian-specific typecast
that will always match the type returned by htons().

Signed-off-by: Chris Ruffin <cmruffin@...il.com>
---
 drivers/staging/rtl8723au/core/rtw_xmit.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/rtl8723au/core/rtw_xmit.c b/drivers/staging/rtl8723au/core/rtw_xmit.c
index a0f7e27..44ef55c 100644
--- a/drivers/staging/rtl8723au/core/rtw_xmit.c
+++ b/drivers/staging/rtl8723au/core/rtw_xmit.c
@@ -1276,7 +1276,7 @@ s32 rtw_put_snap23a(u8 *data, u16 h_proto)
 	snap->oui[0] = oui[0];
 	snap->oui[1] = oui[1];
 	snap->oui[2] = oui[2];
-	*(u16 *)(data + SNAP_SIZE) = htons(h_proto);
+	*(__be16 *)(data + SNAP_SIZE) = htons(h_proto);
 	return SNAP_SIZE + sizeof(u16);
 }
 
-- 
1.7.10.4

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