--- /dev/null
+From c0ff68f1611d6855a06d672989ad5cfea160a4eb Mon Sep 17 00:00:00 2001
+From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
+Date: Mon, 29 Apr 2013 14:15:51 +0200
+Subject: kbuild: fix make headers_install when path is too long
+
+From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
+
+commit c0ff68f1611d6855a06d672989ad5cfea160a4eb upstream.
+
+If headers_install is executed from a deep/long directory structure, the
+shell's maximum argument length can be execeeded, which breaks the operation
+with:
+
+| make[2]: execvp: /bin/sh: Argument list too long
+| make[2]: ***
+
+Instead of passing each files name with the entire path, I give only the file
+name without the source path and give this path as a new argument to
+headers_install.pl.
+
+Because there is three possible paths, I have tree input-files list, one per
+path.
+
+Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
+Tested-by: Bruce Ashfield <bruce.ashfield@windriver.com>
+Signed-off-by: Michal Marek <mmarek@suse.cz>
+Cc: Wang Nan <wangnan0@huawei.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ scripts/Makefile.headersinst | 20 ++++++++++++++------
+ scripts/headers_install.sh | 7 +++++--
+ 2 files changed, 19 insertions(+), 8 deletions(-)
+
+--- a/scripts/Makefile.headersinst
++++ b/scripts/Makefile.headersinst
+@@ -47,18 +47,24 @@ header-y := $(filter-out $(generic-
+ all-files := $(header-y) $(genhdr-y) $(wrapper-files)
+ output-files := $(addprefix $(installdir)/, $(all-files))
+
+-input-files := $(foreach hdr, $(header-y), \
++input-files1 := $(foreach hdr, $(header-y), \
+ $(if $(wildcard $(srcdir)/$(hdr)), \
+- $(wildcard $(srcdir)/$(hdr)), \
++ $(wildcard $(srcdir)/$(hdr))) \
++ )
++input-files1-name := $(notdir $(input-files1))
++input-files2 := $(foreach hdr, $(header-y), \
++ $(if $(wildcard $(srcdir)/$(hdr)),, \
+ $(if $(wildcard $(oldsrcdir)/$(hdr)), \
+ $(wildcard $(oldsrcdir)/$(hdr)), \
+ $(error Missing UAPI file $(srcdir)/$(hdr))) \
+- )) \
+- $(foreach hdr, $(genhdr-y), \
++ ))
++input-files2-name := $(notdir $(input-files2))
++input-files3 := $(foreach hdr, $(genhdr-y), \
+ $(if $(wildcard $(gendir)/$(hdr)), \
+ $(wildcard $(gendir)/$(hdr)), \
+ $(error Missing generated UAPI file $(gendir)/$(hdr)) \
+ ))
++input-files3-name := $(notdir $(input-files3))
+
+ # Work out what needs to be removed
+ oldheaders := $(patsubst $(installdir)/%,%,$(wildcard $(installdir)/*.h))
+@@ -72,7 +78,9 @@ printdir = $(patsubst $(INSTALL_HDR_PATH
+ quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
+ file$(if $(word 2, $(all-files)),s))
+ cmd_install = \
+- $(CONFIG_SHELL) $< $(installdir) $(input-files); \
++ $(CONFIG_SHELL) $< $(installdir) $(srcdir) $(input-files1-name); \
++ $(CONFIG_SHELL) $< $(installdir) $(oldsrcdir) $(input-files2-name); \
++ $(CONFIG_SHELL) $< $(installdir) $(gendir) $(input-files3-name); \
+ for F in $(wrapper-files); do \
+ echo "\#include <asm-generic/$$F>" > $(installdir)/$$F; \
+ done; \
+@@ -98,7 +106,7 @@ __headersinst: $(subdirs) $(install-file
+ @:
+
+ targets += $(install-file)
+-$(install-file): scripts/headers_install.sh $(input-files) FORCE
++$(install-file): scripts/headers_install.sh $(input-files1) $(input-files2) $(input-files3) FORCE
+ $(if $(unwanted),$(call cmd,remove),)
+ $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
+ $(call if_changed,install)
+--- a/scripts/headers_install.sh
++++ b/scripts/headers_install.sh
+@@ -2,7 +2,7 @@
+
+ if [ $# -lt 1 ]
+ then
+- echo "Usage: headers_install.sh OUTDIR [FILES...]
++ echo "Usage: headers_install.sh OUTDIR SRCDIR [FILES...]
+ echo
+ echo "Prepares kernel header files for use by user space, by removing"
+ echo "all compiler.h definitions and #includes, removing any"
+@@ -10,6 +10,7 @@ then
+ echo "asm/inline/volatile keywords."
+ echo
+ echo "OUTDIR: directory to write each userspace header FILE to."
++ echo "SRCDIR: source directory where files are picked."
+ echo "FILES: list of header files to operate on."
+
+ exit 1
+@@ -19,6 +20,8 @@ fi
+
+ OUTDIR="$1"
+ shift
++SRCDIR="$1"
++shift
+
+ # Iterate through files listed on command line
+
+@@ -34,7 +37,7 @@ do
+ -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \
+ -e 's/(^|[ \t(])(inline|asm|volatile)([ \t(]|$)/\1__\2__\3/g' \
+ -e 's@#(ifndef|define|endif[ \t]*/[*])[ \t]*_UAPI@#\1 @' \
+- "$i" > "$OUTDIR/$FILE.sed" || exit 1
++ "$SRCDIR/$i" > "$OUTDIR/$FILE.sed" || exit 1
+ scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \
+ > "$OUTDIR/$FILE"
+ [ $? -gt 1 ] && exit 1