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[v5.10,RESEND,15/15] arm64: armv8_deprecated: fix unused-function error

Message ID 20231011100545.979577-16-ruanjinjie@huawei.com (mailing list archive)
State New, archived
Headers show
Series arm64: Fix a concurrency issue in emulation_proc_handler() | expand

Commit Message

Jinjie Ruan Oct. 11, 2023, 10:05 a.m. UTC 
From: Ren Zhijie <renzhijie2@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@huawei.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20221124022429.19024-1-renzhijie2@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
---
 arch/arm64/kernel/armv8_deprecated.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c
index fd529c6c108b..f0ba854f0045 100644
--- 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;