linux-kernel - [PATCH] parisc: decompressor: do not copy source files while building

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Date:   Mon, 13 Dec 2021 12:09:15 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-parisc@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        Helge Deller <deller@....de>,
        "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        Rich Felker <dalias@...c.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Subject: [PATCH] parisc: decompressor: do not copy source files while building

As commit 7ae4a78daacf ("ARM: 8969/1: decompressor: simplify libfdt
builds") stated, copying source files during the build time may not
end up with as clean code as expected.

Do similar for parisc to clean up the Makefile.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 arch/parisc/boot/compressed/.gitignore | 2 --
 arch/parisc/boot/compressed/Makefile   | 8 --------
 arch/parisc/boot/compressed/firmware.c | 2 ++
 arch/parisc/boot/compressed/real2.S    | 2 ++
 scripts/remove-stale-files             | 5 +++++
 5 files changed, 9 insertions(+), 10 deletions(-)
 create mode 100644 arch/parisc/boot/compressed/firmware.c
 create mode 100644 arch/parisc/boot/compressed/real2.S

diff --git a/arch/parisc/boot/compressed/.gitignore b/arch/parisc/boot/compressed/.gitignore
index b9853a356ab2..a5839aa16706 100644
--- a/arch/parisc/boot/compressed/.gitignore
+++ b/arch/parisc/boot/compressed/.gitignore
@@ -1,6 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
-firmware.c
-real2.S
 sizes.h
 vmlinux
 vmlinux.lds
diff --git a/arch/parisc/boot/compressed/Makefile b/arch/parisc/boot/compressed/Makefile
index bf4f2891d0b7..116bd5c1873c 100644
--- a/arch/parisc/boot/compressed/Makefile
+++ b/arch/parisc/boot/compressed/Makefile
@@ -13,7 +13,6 @@ OBJECTS := head.o real2.o firmware.o misc.o piggy.o
 targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
 targets += $(OBJECTS) sizes.h
-targets += real2.S firmware.c
 
 KBUILD_CFLAGS := -D__KERNEL__ -O2 -DBOOTLOADER
 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
@@ -42,14 +41,7 @@ $(obj)/head.o: $(obj)/sizes.h
 CFLAGS_misc.o += -I$(objtree)/$(obj)
 $(obj)/misc.o: $(obj)/sizes.h
 
-$(obj)/firmware.o: $(obj)/firmware.c
-$(obj)/firmware.c: $(srctree)/arch/$(SRCARCH)/kernel/firmware.c
-	$(call cmd,shipped)
-
 AFLAGS_real2.o += -DBOOTLOADER
-$(obj)/real2.o: $(obj)/real2.S
-$(obj)/real2.S: $(srctree)/arch/$(SRCARCH)/kernel/real2.S
-	$(call cmd,shipped)
 
 CPPFLAGS_vmlinux.lds += -I$(objtree)/$(obj) -DBOOTLOADER
 $(obj)/vmlinux.lds: $(obj)/sizes.h
diff --git a/arch/parisc/boot/compressed/firmware.c b/arch/parisc/boot/compressed/firmware.c
new file mode 100644
index 000000000000..16a07137fe92
--- /dev/null
+++ b/arch/parisc/boot/compressed/firmware.c
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include "../../kernel/firmware.c"
diff --git a/arch/parisc/boot/compressed/real2.S b/arch/parisc/boot/compressed/real2.S
new file mode 100644
index 000000000000..cdc6a4da3240
--- /dev/null
+++ b/arch/parisc/boot/compressed/real2.S
@@ -0,0 +1,2 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#include "../../kernel/real2.S"
diff --git a/scripts/remove-stale-files b/scripts/remove-stale-files
index f0d53227fe7b..80430b8fb617 100755
--- a/scripts/remove-stale-files
+++ b/scripts/remove-stale-files
@@ -33,4 +33,9 @@ if [ -n "${building_out_of_srctree}" ]; then
 	do
 		rm -f arch/mips/boot/compressed/${f}
 	done
+
+	for f in firmware.c real2.S
+	do
+		rm -f arch/parisc/boot/compressed/${f}
+	done
 fi
-- 
2.32.0