[PATCH] kobject_uevent CONFIG_NET=n fix

lib/lib.a(kobject_uevent.o)(.text+0x25f): In function `kobject_uevent':
: undefined reference to `__alloc_skb'
lib/lib.a(kobject_uevent.o)(.text+0x2a1): In function `kobject_uevent':
: undefined reference to `skb_over_panic'
lib/lib.a(kobject_uevent.o)(.text+0x31d): In function `kobject_uevent':
: undefined reference to `skb_over_panic'
lib/lib.a(kobject_uevent.o)(.text+0x356): In function `kobject_uevent':
: undefined reference to `netlink_broadcast'
lib/lib.a(kobject_uevent.o)(.init.text+0x9): In function `kobject_uevent_init':
: undefined reference to `netlink_kernel_create'
make: *** [.tmp_vmlinux1] Error 1

Netlink is unconditionally enabled if CONFIG_NET, so that's OK.

kobject_uevent.o is compiled even if !CONFIG_HOTPLUG, which is lazy.

Let's compound the sin.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

lib/kobject_uevent.c

@@ -25,9 +25,7 @@
 #define BUFFER_SIZE	1024	/* buffer for the variables */
 #define NUM_ENVP	32	/* number of env pointers */
 
-#if defined(CONFIG_HOTPLUG)
-char uevent_helper[UEVENT_HELPER_PATH_LEN] = "/sbin/hotplug";
-u64 uevent_seqnum;
+#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
 static DEFINE_SPINLOCK(sequence_lock);
 static struct sock *uevent_sock;