[PATCH v2] arm64: cpufeature: Use defined macro instead of magic numbers

From: Shaokun Zhang <zhangshaokun@hisilicon.com>
To: <linux-arm-kernel@lists.infradead.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>
Subject: [PATCH v2] arm64: cpufeature: Use defined macro instead of magic numbers
Date: Fri, 16 Jul 2021 13:58:09 +0800	[thread overview]
Message-ID: <1626415089-57584-1-git-send-email-zhangshaokun@hisilicon.com> (raw)

Use defined macro to simplify the code and make it more readable.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
---
ChangeLog:
v1-->v2:
    1. Address Will's comment to make code more readable.

 arch/arm64/kernel/cpufeature.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 125d5c9471ac..93004bc8e1e8 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -1733,7 +1733,7 @@ static void cpu_has_fwb(const struct arm64_cpu_capabilities *__unused)
 	u64 val = read_sysreg_s(SYS_CLIDR_EL1);
 
 	/* Check that CLIDR_EL1.LOU{U,IS} are both 0 */
-	WARN_ON(val & (7 << 27 | 7 << 21));
+	WARN_ON(CLIDR_LOUU(val) || CLIDR_LOUIS(val));
 }
 
 #ifdef CONFIG_ARM64_PAN
-- 
2.7.4


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