linux-kernel - [ 49/75] x86, mkpiggy: Dont open code put_unaligned

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Message-Id: <20120504204228.559400369@linuxfoundation.org>
Date:	Fri, 04 May 2012 13:43:13 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, "H. Peter Anvin" <hpa@...or.com>,
	Matt Fleming <matt.fleming@...el.com>
Subject: [ 49/75] x86, mkpiggy: Dont open code put_unaligned_le32()

3.3-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Matt Fleming <matt.fleming@...el.com>

commit 12871c568305a0b20f116315479a18cd46882e9b upstream.

Use the new headers in tools/include instead of rolling our own
put_unaligned_le32() implementation.

Cc: H. Peter Anvin <hpa@...or.com>
Signed-off-by: Matt Fleming <matt.fleming@...el.com>
Link: http://lkml.kernel.org/r/1330436245-24875-4-git-send-email-matt@console-pimps.org
Signed-off-by: H. Peter Anvin <hpa@...or.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/x86/boot/compressed/Makefile  |    1 +
 arch/x86/boot/compressed/mkpiggy.c |   11 ++---------
 2 files changed, 3 insertions(+), 9 deletions(-)

--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -22,6 +22,7 @@ LDFLAGS := -m elf_$(UTS_MACHINE)
 LDFLAGS_vmlinux := -T
 
 hostprogs-y	:= mkpiggy
+HOST_EXTRACFLAGS += -I$(srctree)/tools/include
 
 VMLINUX_OBJS = $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \
 	$(obj)/string.o $(obj)/cmdline.o $(obj)/early_serial_console.o \
--- a/arch/x86/boot/compressed/mkpiggy.c
+++ b/arch/x86/boot/compressed/mkpiggy.c
@@ -29,14 +29,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <inttypes.h>
-
-static uint32_t getle32(const void *p)
-{
-	const uint8_t *cp = p;
-
-	return (uint32_t)cp[0] + ((uint32_t)cp[1] << 8) +
-		((uint32_t)cp[2] << 16) + ((uint32_t)cp[3] << 24);
-}
+#include <tools/le_byteshift.h>
 
 int main(int argc, char *argv[])
 {
@@ -69,7 +62,7 @@ int main(int argc, char *argv[])
 	}
 
 	ilen = ftell(f);
-	olen = getle32(&olen);
+	olen = get_unaligned_le32(&olen);
 	fclose(f);
 
 	/*


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