netdev - Re: [PATCH] net: b43legacy: fix compile error

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Date:	Mon, 25 Oct 2010 17:51:45 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	Arnd Hannemann <arnd@...dnet.de>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org
Subject: Re: [PATCH] net: b43legacy: fix compile error

Le lundi 25 octobre 2010 à 10:32 -0500, Larry Finger a écrit :
> On 10/25/2010 09:41 AM, Arnd Hannemann wrote:
> > On todays linus tree the following compile error happened to me:
> > 
> >   CC [M]  drivers/net/wireless/b43legacy/xmit.o
> > In file included from include/net/dst.h:11,
> >                  from drivers/net/wireless/b43legacy/xmit.c:31:
> > include/net/dst_ops.h:28: error: expected ':', ',', ';', '}' or '__attribute__' before '____cacheline_aligned_in_smp'
> > include/net/dst_ops.h: In function 'dst_entries_get_fast':
> > include/net/dst_ops.h:33: error: 'struct dst_ops' has no member named 'pcpuc_entries'
> > include/net/dst_ops.h: In function 'dst_entries_get_slow':
> > include/net/dst_ops.h:41: error: 'struct dst_ops' has no member named 'pcpuc_entries'
> > include/net/dst_ops.h: In function 'dst_entries_add':
> > include/net/dst_ops.h:49: error: 'struct dst_ops' has no member named 'pcpuc_entries'
> > include/net/dst_ops.h: In function 'dst_entries_init':
> > include/net/dst_ops.h:55: error: 'struct dst_ops' has no member named 'pcpuc_entries'
> > include/net/dst_ops.h: In function 'dst_entries_destroy':
> > include/net/dst_ops.h:60: error: 'struct dst_ops' has no member named 'pcpuc_entries'
> > make[4]: *** [drivers/net/wireless/b43legacy/xmit.o] Error 1
> > make[3]: *** [drivers/net/wireless/b43legacy] Error 2
> > make[2]: *** [drivers/net/wireless] Error 2
> > make[1]: *** [drivers/net] Error 2
> > make: *** [drivers] Error 2
> > 
> > This patch fixes this issue by adding "linux/cache.h" as an include to
> > "include/net/dst_ops.h".
> 
> Strange. Compiling b43legacy from the linux-2.6.git tree (git describe is
> v2.6.36-4464-g229aebb) works fine on x86_64. I wonder what is different.

Well, x86_64 must include cache.h, this is probably why I missed it in
my build tests.

I wonder also why #include <net/dst.h> is needed at all in this
driver...

diff --git a/drivers/net/wireless/b43legacy/xmit.c
b/drivers/net/wireless/b43legacy/xmit.c
index 7d177d9..a261aec 100644
--- a/drivers/net/wireless/b43legacy/xmit.c
+++ b/drivers/net/wireless/b43legacy/xmit.c
@@ -28,8 +28,6 @@
 
 */
 
-#include <net/dst.h>
-
 #include "xmit.h"
 #include "phy.h"
 #include "dma.h"



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