From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <JBeulich@suse.com>
Subject: [PATCH] unmodified_drivers: make usbfront build
	conditional
Date: Mon, 20 Jan 2014 09:47:42 +0000
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Commit 0dcfb88fb8 ("unmodified_drivers: enable build of usbfront
driver") results in the PV drivers to no longer build against older
(pre-2.6.35) Linux versions. That's because usbfront.h includes
headers from drivers/usb/core/, which is generally unavailable when
building out-of-tree modules.

Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/unmodified_drivers/linux-2.6/usbfront/Kbuild
+++ b/unmodified_drivers/linux-2.6/usbfront/Kbuild
@@ -1,5 +1,7 @@
 include $(M)/overrides.mk
=20
-obj-m +=3D xen-usb.o
+obj-m +=3D $(if $(shell grep '^\#include "\.\./\.\./' $(obj)/usbfront.h), =
\
+	      $(warning usbfront cannot be built), \
+	      xen-usb.o)
=20
 xen-usb-objs :=3D usbfront-hcd.o xenbus.o




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unmodified_drivers: make usbfront build conditional=0A=0ACommit 0dcfb88fb8 =
("unmodified_drivers: enable build of usbfront=0Adriver") results in the =
PV drivers to no longer build against older=0A(pre-2.6.35) Linux versions. =
That's because usbfront.h includes=0Aheaders from drivers/usb/core/, which =
is generally unavailable when=0Abuilding out-of-tree modules.=0A=0ASigned-o=
ff-by: Jan Beulich <jbeulich@suse.com>=0A=0A--- a/unmodified_drivers/linux-=
2.6/usbfront/Kbuild=0A+++ b/unmodified_drivers/linux-2.6/usbfront/Kbuild=0A=
@@ -1,5 +1,7 @@=0A include $(M)/overrides.mk=0A =0A-obj-m +=3D xen-usb.o=0A=
+obj-m +=3D $(if $(shell grep '^\#include "\.\./\.\./' $(obj)/usbfront.h), =
\=0A+	      $(warning usbfront cannot be built), \=0A+	      =
xen-usb.o)=0A =0A xen-usb-objs :=3D usbfront-hcd.o xenbus.o=0A
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