[PATCH -mm] driver core: build with SYSFS=n

[Randy Dunlap <randy.dunlap@oracle.com>]

From: Randy Dunlap <randy.dunlap@oracle.com>

When SYSFS=n and MODULES=y, build ends with:

linux-2.6.24-rc6-mm1/drivers/base/module.c: In function 'module_add_driver':
linux-2.6.24-rc6-mm1/drivers/base/module.c:49: error: 'module_kset' undeclared (first use in this function)
make[3]: *** [drivers/base/module.o] Error 1

Below is one possible fix.
Build-tested with all 4 config combinations of SYSFS & MODULES.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
---
 drivers/base/Makefile |    2 ++
 drivers/base/base.h   |    2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

--- linux-2.6.24-rc6-mm1.orig/drivers/base/Makefile
+++ linux-2.6.24-rc6-mm1/drivers/base/Makefile
@@ -11,7 +11,9 @@ obj-$(CONFIG_FW_LOADER)	+= firmware_clas
 obj-$(CONFIG_NUMA)	+= node.o
 obj-$(CONFIG_MEMORY_HOTPLUG_SPARSE) += memory.o
 obj-$(CONFIG_SMP)	+= topology.o
+ifeq ($(CONFIG_SYSFS),y)
 obj-$(CONFIG_MODULES)	+= module.o
+endif
 obj-$(CONFIG_SYS_HYPERVISOR) += hypervisor.o
 
 ifeq ($(CONFIG_DEBUG_DRIVER),y)
--- linux-2.6.24-rc6-mm1.orig/drivers/base/base.h
+++ linux-2.6.24-rc6-mm1/drivers/base/base.h
@@ -79,7 +79,7 @@ extern char *make_class_name(const char 
 
 extern int devres_release_all(struct device *dev);
 
-#ifdef CONFIG_MODULES
+#if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS)
 extern void module_add_driver(struct module *mod, struct device_driver *drv);
 extern void module_remove_driver(struct device_driver *drv);
 #else
--
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