[PATCH] PNP: export pnp_bus_type

The PNP framework doesn't export "pnp_bus_type", which is an unfortunate
exception to the policy followed by pretty much every other bus.  I noticed
this when I had to find a device in order to provide its platform_data.

Note that per advice from Arjan, the "export" scope has been been minimized to
avoid the hundred-plus bytes needed to support access from modules.  In this
case, the symbol is only needed by statically linked kernel code that lives
outside the drivers/pnp directory.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index ab8a8dd8d64c..9a5226f0f169 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -352,6 +352,8 @@ struct pnp_protocol {
         (dev) = protocol_to_pnp_dev((dev)->protocol_list.next))
 
 
+extern struct bus_type pnp_bus_type;
+
 #if defined(CONFIG_PNP)
 
 /* device management */