Patch "arm64: armv8_deprecated: fix unused-function error" has been added to the 5.15-stable tree

[gregkh at linuxfoundation.org]

This is a note to let you know that I've just added the patch titled

    arm64: armv8_deprecated: fix unused-function error

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     arm64-armv8_deprecated-fix-unused-function-error.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable at vger.kernel.org> know about it.


>From ruanjinjie at huawei.com Wed Oct 11 12:07:54 2023
From: Jinjie Ruan <ruanjinjie at huawei.com>
Date: Wed, 11 Oct 2023 10:06:55 +0000
Subject: arm64: armv8_deprecated: fix unused-function error
To: <catalin.marinas at arm.com>, <will at kernel.org>, <mark.rutland at arm.com>, <broonie at kernel.org>, <anshuman.khandual at arm.com>, <alexandru.elisei at arm.com>, <sashal at kernel.org>, <maz at kernel.org>, <gregkh at linuxfoundation.org>, <james.morse at arm.com>, <pcc at google.com>, <scott at os.amperecomputing.com>, <ebiederm at xmission.com>, <haibinzhang at tencent.com>, <hewenliang4 at huawei.com>, <linux-arm-kernel at lists.infradead.org>, <linux-kernel at vger.kernel.org>, <stable at kernel.org>
Cc: <ruanjinjie at huawei.com>
Message-ID: <20231011100655.979626-16-ruanjinjie at huawei.com>

From: Ren Zhijie <renzhijie2 at huawei.com>

commit 223d3a0d30b6e9f979f5642e430e1753d3e29f89 upstream.

If CONFIG_SWP_EMULATION is not set and
CONFIG_CP15_BARRIER_EMULATION is not set,
aarch64-linux-gnu complained about unused-function :

arch/arm64/kernel/armv8_deprecated.c:67:21: error: ‘aarch32_check_condition’ defined but not used [-Werror=unused-function]
 static unsigned int aarch32_check_condition(u32 opcode, u32 psr)
                     ^~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

To fix this warning, modify aarch32_check_condition() with __maybe_unused.

Fixes: 0c5f416219da ("arm64: armv8_deprecated: move aarch32 helper earlier")
Signed-off-by: Ren Zhijie <renzhijie2 at huawei.com>
Acked-by: Mark Rutland <mark.rutland at arm.com>
Link: https://lore.kernel.org/r/20221124022429.19024-1-renzhijie2@huawei.com
Signed-off-by: Will Deacon <will at kernel.org>
Signed-off-by: Jinjie Ruan <ruanjinjie at huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
 arch/arm64/kernel/armv8_deprecated.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm64/kernel/armv8_deprecated.c
+++ b/arch/arm64/kernel/armv8_deprecated.c
@@ -64,7 +64,7 @@ struct insn_emulation {
 
 #define	ARM_OPCODE_CONDITION_UNCOND	0xf
 
-static unsigned int aarch32_check_condition(u32 opcode, u32 psr)
+static unsigned int __maybe_unused aarch32_check_condition(u32 opcode, u32 psr)
 {
 	u32 cc_bits  = opcode >> 28;
 


Patches currently in stable-queue which might be from ruanjinjie at huawei.com are

queue-5.15/arm64-factor-insn-read-out-of-call_undef_hook.patch
queue-5.15/arm64-rework-el0-mrs-emulation.patch
queue-5.15/arm64-die-pass-err-as-long.patch
queue-5.15/arm64-armv8_deprecated-rework-deprected-instruction-handling.patch
queue-5.15/arm64-armv8_deprecated-fix-unused-function-error.patch
queue-5.15/arm64-armv8_deprecated-move-aarch32-helper-earlier.patch
queue-5.15/arm64-consistently-pass-esr_elx-to-die.patch
queue-5.15/arm64-factor-out-el1-ssbs-emulation-hook.patch
queue-5.15/arm64-report-el1-undefs-better.patch
queue-5.15/arm64-armv8_deprecated-fold-ops-into-insn_emulation.patch
queue-5.15/arm64-rework-bti-exception-handling.patch
queue-5.15/arm64-rework-fpac-exception-handling.patch
queue-5.15/arm64-split-el0-el1-undef-handlers.patch
queue-5.15/arm64-allow-kprobes-on-el0-handlers.patch
queue-5.15/arm64-armv8_deprecated-move-emulation-functions.patch