From: David Howells <dhowells@redhat.com>
Date: Thu, 4 Oct 2012 17:16:47 +0000 (+0100)
Subject: UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
X-Git-Tag: v3.12-rc1~2235^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f3dfd599af993385b40fc7a1c947afc12729bc4d;p=kernel%2Fkernel-generic.git

UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)

The m68k arch doesn't have a kvm_para.h (unlike most or maybe all other
arches), but there is one in asm-generic.  This means that:

	ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm_para.h \
			  $(srctree)/include/asm-$(SRCARCH)/kvm_para.h \
			  $(INSTALL_HDR_PATH)/include/asm-*/kvm_para.h),)
	header-y += kvm_para.h
	endif

gets it wrong because it is invoked twice during the header installation - and
on the second occasion, asm-generic/kvm_para.h has been installed in usr/,
thus triggering a attempt to install asm-m68k/kvm_para.h which will fail.

There are three headers with this sort of conditional logic: a.out.h, kvm.h
and kvm_para.h.  For all three of them, change the logic to be something like:

	ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm_para.h \
			  $(srctree)/arch/$(SRCARCH)/include/uapi/asm/kvm_para.h),)

which finds the header in only the two places it should be found, and doesn't
get incorrectly triggered by the installation of asm-generic's version.

Signed-off-by: David Howells <dhowells@redhat.com>
---

diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index e149e8b..aab5c85 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -21,18 +21,15 @@ header-y += usb/
 header-y += wimax/
 
 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/a.out.h \
-		  $(srctree)/include/asm-$(SRCARCH)/a.out.h \
-		  $(INSTALL_HDR_PATH)/include/asm-*/a.out.h),)
+		  $(srctree)/arch/$(SRCARCH)/include/uapi/asm/a.out.h),)
 header-y += a.out.h
 endif
 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm.h \
-		  $(srctree)/include/asm-$(SRCARCH)/kvm.h \
-		  $(INSTALL_HDR_PATH)/include/asm-*/kvm.h),)
+		  $(srctree)/arch/$(SRCARCH)/include/uapi/asm/kvm.h),)
 header-y += kvm.h
 endif
 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm_para.h \
-		  $(srctree)/include/asm-$(SRCARCH)/kvm_para.h \
-		  $(INSTALL_HDR_PATH)/include/asm-*/kvm_para.h),)
+		  $(srctree)/arch/$(SRCARCH)/include/uapi/asm/kvm_para.h),)
 header-y += kvm_para.h
 endif