linux-next: build failure after merge of the rcu tree

Stephen Rothwell
2010-09-17T02:42:42Z

Hi Paul,

After merging the rcu tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

net/core/dev.c: In function 'netdev_run_todo':
net/core/dev.c:5294: error: dereferencing pointer to incomplete type
net/core/dev.c:5294: warning: type defaults to 'int' in declaration of '_________p1'
net/core/dev.c:5294: error: dereferencing pointer to incomplete type
net/core/dev.c:5294: warning: type defaults to 'int' in declaration of 'type name'
net/core/dev.c:5294: error: dereferencing pointer to incomplete type
net/core/dev.c:5294: warning: type defaults to 'int' in declaration of 'type name'
net/core/dev.c:5294: warning: comparison of distinct pointer types lacks a cast
net/core/dev.c:5294: error: dereferencing pointer to incomplete type
net/core/dev.c:5294: warning: type defaults to 'int' in declaration of 'type name'

Caused by commit ca5ecddfa8fcbd948c95530e7e817cee9fb43a3d ("rcu: define
__rcu address space modifier for sparse") interacting with commit
95ae6b228f814fc0528d0506ee9f18ac333d6851 ("ipv4: ip_ptr cleanups") from
the net tree.

rcu_dereference_raw() now needs to know the type of the object its
argument points to. I added the following merge fix (which could be
applied to the net tree anyway).

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Fri, 17 Sep 2010 12:36:36 +1000
Subject: [PATCH] net: include inetdevice.h for rcu_dereference_raw api change

rcu_dereference_raw() now needs to know the type of its argument.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
net/core/dev.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index c6d837a..cadd28c 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -129,6 +129,7 @@
#include <linux/random.h>
#include <trace/events/napi.h>
#include <linux/pci.h>
+#include <linux/inetdevice.h>

#include "net-sysfs.h"

--
1.7.1

--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au