linux-kernel - [PATCH 1/7] arm64: capabilities: Merge entries for ARM64_WORKAROUND_CLEAN

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Date:   Mon,  5 Nov 2018 11:55:11 +0000
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, vladimir.murzin@....com,
        will.deacon@....com, catalin.marinas@....com, mark.rutland@....com,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Andre Przywara <andre.przywara@....com>
Subject: [PATCH 1/7] arm64: capabilities: Merge entries for ARM64_WORKAROUND_CLEAN_CACHE

We have two entries for ARM64_WORKAROUND_CLEAN_CACHE capability :

1) ARM Errata 826319, 827319, 824069, 819472 on A53 r0p[012]
2) ARM Errata 819472 on A53 r0p[01]

Both have the same work around. Merge these entries to avoid
duplicate entries for a single capability.

Cc: Will Deacon <will.deacon@....com>
Cc: Andre Przywara <andre.przywara@....com>
Cc: Mark Rutland <mark.rutland@....com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 arch/arm64/kernel/cpu_errata.c | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index a509e351..c825bc0 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -573,24 +573,19 @@ static const struct midr_range arm64_harden_el2_vectors[] = {
 const struct arm64_cpu_capabilities arm64_errata[] = {
 #if	defined(CONFIG_ARM64_ERRATUM_826319) || \
 	defined(CONFIG_ARM64_ERRATUM_827319) || \
-	defined(CONFIG_ARM64_ERRATUM_824069)
+	defined(CONFIG_ARM64_ERRATUM_824069) || \
+	defined(CONFIG_ARM64_ERRATUM_819472)
 	{
-	/* Cortex-A53 r0p[012] */
-		.desc = "ARM errata 826319, 827319, 824069",
+	/*
+	 * Cortex-A53 r0p[012]: ARM errata 826319, 827319, 824069
+	 * Cortex-A53 r0p[01] : ARM errata 819472
+	 */
+		.desc = "ARM errata 826319, 827319, 824069, 819472",
 		.capability = ARM64_WORKAROUND_CLEAN_CACHE,
 		ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 2),
 		.cpu_enable = cpu_enable_cache_maint_trap,
 	},
 #endif
-#ifdef CONFIG_ARM64_ERRATUM_819472
-	{
-	/* Cortex-A53 r0p[01] */
-		.desc = "ARM errata 819472",
-		.capability = ARM64_WORKAROUND_CLEAN_CACHE,
-		ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 1),
-		.cpu_enable = cpu_enable_cache_maint_trap,
-	},
-#endif
 #ifdef CONFIG_ARM64_ERRATUM_832075
 	{
 	/* Cortex-A57 r0p0 - r1p2 */
-- 
2.7.4