diff --git a/drivers/scsi/aic7xxx/Makefile b/drivers/scsi/aic7xxx/Makefile
index 741d81861d17..07b60a780c06 100644
--- a/drivers/scsi/aic7xxx/Makefile
+++ b/drivers/scsi/aic7xxx/Makefile
@@ -55,9 +55,9 @@ aicasm-7xxx-opts-$(CONFIG_AIC7XXX_REG_PRETTY_PRINT) := \
 
 ifeq ($(CONFIG_AIC7XXX_BUILD_FIRMWARE),y)
 $(obj)/aic7xxx_seq.h: $(src)/aic7xxx.seq $(src)/aic7xxx.reg $(obj)/aicasm/aicasm
-	$(obj)/aicasm/aicasm -I$(src) -r $(obj)/aic7xxx_reg.h \
+	$(obj)/aicasm/aicasm -I$(srctree)/$(src) -r $(obj)/aic7xxx_reg.h \
 			      $(aicasm-7xxx-opts-y) -o $(obj)/aic7xxx_seq.h \
-			      $(src)/aic7xxx.seq
+			      $(srctree)/$(src)/aic7xxx.seq
 
 $(aic7xxx-gen-y): $(obj)/aic7xxx_seq.h
 else
@@ -72,14 +72,14 @@ aicasm-79xx-opts-$(CONFIG_AIC79XX_REG_PRETTY_PRINT) := \
 
 ifeq ($(CONFIG_AIC79XX_BUILD_FIRMWARE),y)
 $(obj)/aic79xx_seq.h: $(src)/aic79xx.seq $(src)/aic79xx.reg $(obj)/aicasm/aicasm
-	$(obj)/aicasm/aicasm -I$(src) -r $(obj)/aic79xx_reg.h \
+	$(obj)/aicasm/aicasm -I$(srctree)/$(src) -r $(obj)/aic79xx_reg.h \
 			      $(aicasm-79xx-opts-y) -o $(obj)/aic79xx_seq.h \
-			      $(src)/aic79xx.seq
+			      $(srctree)/$(src)/aic79xx.seq
 
 $(aic79xx-gen-y): $(obj)/aic79xx_seq.h
 else
 $(obj)/aic79xx_reg_print.c: $(src)/aic79xx_reg_print.c_shipped
 endif
 
-$(obj)/aicasm/aicasm: $(src)/aicasm/*.[chyl]
-	$(MAKE) -C $(src)/aicasm
+$(obj)/aicasm/aicasm: $(srctree)/$(src)/aicasm/*.[chyl]
+	$(MAKE) -C $(srctree)/$(src)/aicasm OUTDIR=$(shell pwd)/$(obj)/aicasm/
diff --git a/drivers/scsi/aic7xxx/aicasm/Makefile b/drivers/scsi/aic7xxx/aicasm/Makefile
index b98c5c1056c3..45e2d49c1fff 100644
--- a/drivers/scsi/aic7xxx/aicasm/Makefile
+++ b/drivers/scsi/aic7xxx/aicasm/Makefile
@@ -1,19 +1,21 @@
 PROG=	aicasm
 
+OUTDIR ?= ./
+
 .SUFFIXES= .l .y .c .h
 
 CSRCS=	aicasm.c aicasm_symbol.c
 YSRCS=	aicasm_gram.y aicasm_macro_gram.y
 LSRCS=	aicasm_scan.l aicasm_macro_scan.l
 
-GENHDRS=	aicdb.h $(YSRCS:.y=.h)
-GENSRCS=	$(YSRCS:.y=.c) $(LSRCS:.l=.c)
+GENHDRS=	$(addprefix ${OUTDIR}/,aicdb.h $(YSRCS:.y=.h))
+GENSRCS=	$(addprefix ${OUTDIR}/,$(YSRCS:.y=.c) $(LSRCS:.l=.c))
 
 SRCS=	${CSRCS} ${GENSRCS}
 LIBS=	-ldb
 clean-files:= ${GENSRCS} ${GENHDRS} $(YSRCS:.y=.output) $(PROG)
 # Override default kernel CFLAGS.  This is a userland app.
-AICASM_CFLAGS:= -I/usr/include -I.
+AICASM_CFLAGS:= -I/usr/include -I. -I$(OUTDIR)
 LEX= flex
 YACC= bison
 YFLAGS= -d
@@ -32,22 +34,25 @@ YFLAGS+= -t -v
 LFLAGS= -d
 endif
 
-$(PROG):  ${GENHDRS} $(SRCS)
-	$(AICASM_CC) $(AICASM_CFLAGS) $(SRCS) -o $(PROG) $(LIBS)
+$(PROG):  $(OUTDIR) ${GENHDRS} $(SRCS)
+	$(AICASM_CC) $(AICASM_CFLAGS) $(SRCS) -o $(OUTDIR)/$(PROG) $(LIBS)
 
-aicdb.h:
+$(OUTDIR):
+	mkdir -p $(OUTDIR)
+
+$(OUTDIR)/aicdb.h:
 	@if [ -e "/usr/include/db4/db_185.h" ]; then		\
-		echo "#include <db4/db_185.h>" > aicdb.h;	\
+		echo "#include <db4/db_185.h>" > $@;	\
 	 elif [ -e "/usr/include/db3/db_185.h" ]; then		\
-		echo "#include <db3/db_185.h>" > aicdb.h;	\
+		echo "#include <db3/db_185.h>" > $@;	\
 	 elif [ -e "/usr/include/db2/db_185.h" ]; then		\
-		echo "#include <db2/db_185.h>" > aicdb.h;	\
+		echo "#include <db2/db_185.h>" > $@;	\
 	 elif [ -e "/usr/include/db1/db_185.h" ]; then		\
-		echo "#include <db1/db_185.h>" > aicdb.h;	\
+		echo "#include <db1/db_185.h>" > $@;	\
 	 elif [ -e "/usr/include/db/db_185.h" ]; then		\
-		echo "#include <db/db_185.h>" > aicdb.h;	\
+		echo "#include <db/db_185.h>" > $@;	\
 	 elif [ -e "/usr/include/db_185.h" ]; then		\
-		echo "#include <db_185.h>" > aicdb.h;		\
+		echo "#include <db_185.h>" > $@;		\
 	 else							\
 		echo "*** Install db development libraries";	\
 	 fi
@@ -58,23 +63,23 @@ clean:
 # Create a dependency chain in generated files
 # to avoid concurrent invocations of the single
 # rule that builds them all.
-aicasm_gram.c: aicasm_gram.h
-aicasm_gram.c aicasm_gram.h: aicasm_gram.y
+$(OUTDIR)/aicasm_gram.c: $(OUTDIR)/aicasm_gram.h
+$(OUTDIR)/aicasm_gram.c $(OUTDIR)/aicasm_gram.h: aicasm_gram.y
 	$(YACC) $(YFLAGS) -b $(<:.y=) $<
-	mv $(<:.y=).tab.c $(<:.y=.c)
-	mv $(<:.y=).tab.h $(<:.y=.h)
+	mv $(<:.y=).tab.c $(OUTDIR)/$(<:.y=.c)
+	mv $(<:.y=).tab.h $(OUTDIR)/$(<:.y=.h)
 
 # Create a dependency chain in generated files
 # to avoid concurrent invocations of the single
 # rule that builds them all.
-aicasm_macro_gram.c: aicasm_macro_gram.h
-aicasm_macro_gram.c aicasm_macro_gram.h: aicasm_macro_gram.y
+$(OUTDIR)/aicasm_macro_gram.c: $(OUTDIR)/aicasm_macro_gram.h
+$(OUTDIR)/aicasm_macro_gram.c $(OUTDIR)/aicasm_macro_gram.h: aicasm_macro_gram.y
 	$(YACC) $(YFLAGS) -b $(<:.y=) -p mm $<
-	mv $(<:.y=).tab.c $(<:.y=.c)
-	mv $(<:.y=).tab.h $(<:.y=.h)
+	mv $(<:.y=).tab.c $(OUTDIR)/$(<:.y=.c)
+	mv $(<:.y=).tab.h $(OUTDIR)/$(<:.y=.h)
 
-aicasm_scan.c: aicasm_scan.l
-	$(LEX) $(LFLAGS) -o$@ $<
+$(OUTDIR)/aicasm_scan.c: aicasm_scan.l
+	$(LEX) $(LFLAGS) -o $@ $<
 
-aicasm_macro_scan.c: aicasm_macro_scan.l
-	$(LEX) $(LFLAGS) -Pmm -o$@ $<
+$(OUTDIR)/aicasm_macro_scan.c: aicasm_macro_scan.l
+	$(LEX) $(LFLAGS) -Pmm -o $@ $<