AX88772C_eeprom and ax8872c build together

hc

2024-05-16 8d2a02b24d66aa359e83eebc1ed3c0f85367a1cb

 kernel/arch/powerpc/tools/relocs_check.sh
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@@ -1,11 +1,8 @@
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 #!/bin/sh
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+# SPDX-License-Identifier: GPL-2.0-or-later
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 # Copyright © 2015 IBM Corporation
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-# This program is free software; you can redistribute it and/or
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-# modify it under the terms of the GNU General Public License
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-# as published by the Free Software Foundation; either version
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-# 2 of the License, or (at your option) any later version.
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 # This script checks the relocations of a vmlinux for "suspicious"
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 # relocations.
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 # based on relocs_check.pl
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 # Copyright © 2009 IBM Corporation
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-if [ $# -lt 2 ]; then
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-	echo "$0 [path to objdump] [path to vmlinux]" 1>&2
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+if [ $# -lt 3 ]; then
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+	echo "$0 [path to objdump] [path to nm] [path to vmlinux]" 1>&2
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 	exit 1
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 fi
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-# Have Kbuild supply the path to objdump so we handle cross compilation.
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+# Have Kbuild supply the path to objdump and nm so we handle cross compilation.
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 objdump="$1"
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-vmlinux="$2"
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+nm="$2"
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+vmlinux="$3"
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+
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+# Remove from the bad relocations those that match an undefined weak symbol
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+# which will result in an absolute relocation to 0.
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+# Weak unresolved symbols are of that form in nm output:
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+# "                  w _binary__btf_vmlinux_bin_end"
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+undef_weak_symbols=$($nm "$vmlinux" | awk '$1 ~ /w/ { print $2 }')
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 bad_relocs=$(
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 $objdump -R "$vmlinux" |
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 	# These relocations are okay
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 	# On PPC64:
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 	#	R_PPC64_RELATIVE, R_PPC64_NONE
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-	#	R_PPC64_ADDR64 mach_<name>
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-	#	R_PPC64_ADDR64 __crc_<name>
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 	# On PPC:
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 	#	R_PPC_RELATIVE, R_PPC_ADDR16_HI,
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 	#	R_PPC_ADDR16_HA,R_PPC_ADDR16_LO,
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 R_PPC_ADDR16_HA
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 R_PPC_RELATIVE
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 R_PPC_NONE' |
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-	grep -E -v '\<R_PPC64_ADDR64[[:space:]]+mach_' |
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-	grep -E -v '\<R_PPC64_ADDR64[[:space:]]+__crc_'
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+	([ "$undef_weak_symbols" ] && grep -F -w -v "$undef_weak_symbols" || cat)
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 )
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 if [ -z "$bad_relocs" ]; then