[PATCH] RAID6 Altivec fix

This patch fixes a signedness bug with RAID6 for Altivec, and makes the
Altivec code testable in userspace.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 22 insertions, 5 deletions

diff --git a/drivers/md/raid6test/Makefile b/drivers/md/raid6test/Makefile
index 557806728609..78e0396adf2a 100644
--- a/drivers/md/raid6test/Makefile
+++ b/drivers/md/raid6test/Makefile
@@ -8,6 +8,8 @@ OPTFLAGS = -O2			# Adjust as desired
 CFLAGS   = -I.. -g $(OPTFLAGS)
 LD       = ld
 PERL     = perl
+AR       = ar
+RANLIB   = ranlib
 
 .c.o:
         $(CC) $(CFLAGS) -c -o $@ $<
@@ -18,18 +20,33 @@ PERL	 = perl
 %.uc: ../%.uc
         cp -f $< $@
 
-all:    raid6.o raid6test
+all:    raid6.a raid6test
 
-raid6.o: raid6int1.o raid6int2.o raid6int4.o raid6int8.o raid6int16.o \
+raid6.a: raid6int1.o raid6int2.o raid6int4.o raid6int8.o raid6int16.o \
          raid6int32.o \
          raid6mmx.o raid6sse1.o raid6sse2.o \
+         raid6altivec1.o raid6altivec2.o raid6altivec4.o raid6altivec8.o \
          raid6recov.o raid6algos.o \
          raid6tables.o
-        $(LD) -r -o $@ $^
+         rm -f $@
+         $(AR) cq $@ $^
+         $(RANLIB) $@
 
-raid6test: raid6.o test.c
+raid6test: test.c raid6.a
         $(CC) $(CFLAGS) -o raid6test $^
 
+raid6altivec1.c: raid6altivec.uc ../unroll.pl
+        $(PERL) ../unroll.pl 1 < raid6altivec.uc > $@
+
+raid6altivec2.c: raid6altivec.uc ../unroll.pl
+        $(PERL) ../unroll.pl 2 < raid6altivec.uc > $@
+
+raid6altivec4.c: raid6altivec.uc ../unroll.pl
+        $(PERL) ../unroll.pl 4 < raid6altivec.uc > $@
+
+raid6altivec8.c: raid6altivec.uc ../unroll.pl
+        $(PERL) ../unroll.pl 8 < raid6altivec.uc > $@
+
 raid6int1.c: raid6int.uc ../unroll.pl
         $(PERL) ../unroll.pl 1 < raid6int.uc > $@
 
@@ -52,7 +69,7 @@ raid6tables.c: mktables
         ./mktables > raid6tables.c
 
 clean:
-        rm -f *.o mktables mktables.c raid6int.uc raid6*.c raid6test
+        rm -f *.o *.a mktables mktables.c raid6int.uc raid6*.c raid6test
 
 spotless: clean
         rm -f *~