linux-kernel - [PATCHv3 2/2] Staging: rtl8188eu: Removed unneeded code.

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Date:	Sun, 10 Aug 2014 20:39:57 +0200
From:	Adrian Remonda <adrianremonda@...il.com>
To:	gregkh@...uxfoundation.org
Cc:	Larry.Finger@...inger.net, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org,
	Adrian Remonda <adrianremonda@...il.com>
Subject: [PATCHv3 2/2] Staging: rtl8188eu: Removed unneeded code.

This patch removes some unneeded code.
1) kzalloc() allocates 4 extra bytes so that we can align the return
   value.  But actually the return value is already aligned so we can
   remove the + 4 and the call to N_BYTE_ALIGMENT().
2) The memset() isn't needed because kzalloc() zeroes the allocation.

Suggested-by: Larry Finger <Larry.Finger@...inger.net>

Signed-off-by: Adrian Remonda <adrianremonda@...il.com>
---
 drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c b/drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c
index 8be4819..bc275b2 100644
--- a/drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c
+++ b/drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c
@@ -42,18 +42,15 @@ int	rtl8188eu_init_recv_priv(struct adapter *padapter)
 	_rtw_init_queue(&precvpriv->free_recv_buf_queue);
 
 	precvpriv->pallocated_recv_buf =
-		kzalloc(NR_RECVBUFF * sizeof(struct recv_buf) + 4, GFP_KERNEL);
+		kzalloc(NR_RECVBUFF * sizeof(struct recv_buf), GFP_KERNEL);
 	if (precvpriv->pallocated_recv_buf == NULL) {
 		res = _FAIL;
 		RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
 				("alloc recv_buf fail!\n"));
 		goto exit;
 	}
-	memset(precvpriv->pallocated_recv_buf, 0,
-			NR_RECVBUFF * sizeof(struct recv_buf) + 4);
 
-	precvpriv->precv_buf = (u8 *)N_BYTE_ALIGMENT((size_t)
-			(precvpriv->pallocated_recv_buf), 4);
+	precvpriv->precv_buf = precvpriv->pallocated_recv_buf;
 
 
 	precvbuf = (struct recv_buf *)precvpriv->precv_buf;
-- 
2.0.4

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