of: include errno.h in of_graph.h
authorArnd Bergmann <arnd@arndb.de>
Mon, 2 May 2016 10:59:19 +0000 (12:59 +0200)
committerRob Herring <robh@kernel.org>
Mon, 2 May 2016 14:00:56 +0000 (09:00 -0500)
When CONFIG_OF is disabled, we have to include linux/errno.h before
including of_graph.h, or get build errors like in the newly added
sun4i drm driver:

In file included from ../drivers/gpu/drm/sun4i/sun4i_drv.c:14:0:
include/linux/of_graph.h: In function 'of_graph_parse_endpoint':
include/linux/of_graph.h:58:10: error: 'ENOSYS' undeclared (first use in this function)

A better solution is to ensure that the header can be included
by itself, so let's include linux/errno.h here to fix the error
we just got, and any similar future error.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Signed-off-by: Rob Herring <robh@kernel.org>
include/linux/of_graph.h

index f8bcd0e21a26649fb70ad645d79b09ee00412283..bb3a5a2cd5705062231fe7d87fac4361a5bde889 100644 (file)
@@ -15,6 +15,7 @@
 #define __LINUX_OF_GRAPH_H
 
 #include <linux/types.h>
+#include <linux/errno.h>
 
 /**
  * struct of_endpoint - the OF graph endpoint data structure