kbuild/Documentation: Incorrect makefile syntax in example

There is an error in the make syntax for one of the kbuild examples

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/Documentation/kbuild/modules.txt b/Documentation/kbuild/modules.txt
index b1096da953c8..0767cf69c69e 100644
--- a/Documentation/kbuild/modules.txt
+++ b/Documentation/kbuild/modules.txt
@@ -275,7 +275,7 @@ following files:
 
                 KERNELDIR := /lib/modules/`uname -r`/build
                 all::
-                        $(MAKE) -C $KERNELDIR M=`pwd` $@
+                        $(MAKE) -C $(KERNELDIR) M=`pwd` $@
 
                 # Module specific targets
                 genbin: