From: Will Deacon <will.deacon@arm.com>
Date: Tue, 2 Jan 2018 21:37:25 +0000 (+0000)
Subject: arm64: cpufeature: Pass capability structure to ->enable callback
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=be53742befea9329b034f143e7e932cac54d3609;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

arm64: cpufeature: Pass capability structure to ->enable callback


Commit 0a0d111d40fd upstream.

In order to invoke the CPU capability ->matches callback from the ->enable
callback for applying local-CPU workarounds, we need a handle on the
capability structure.

This patch passes a pointer to the capability structure to the ->enable
callback.

Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 9249cb728992..c284b855315f 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -1144,7 +1144,7 @@ void __init enable_cpu_capabilities(const struct arm64_cpu_capabilities *caps)
 			 * uses an IPI, giving us a PSTATE that disappears when
 			 * we return.
 			 */
-			stop_machine(caps->enable, NULL, cpu_online_mask);
+			stop_machine(caps->enable, (void *)caps, cpu_online_mask);
 		}
 	}
 }
@@ -1203,7 +1203,7 @@ verify_local_cpu_features(const struct arm64_cpu_capabilities *caps_list)
 			cpu_die_early();
 		}
 		if (caps->enable)
-			caps->enable(NULL);
+			caps->enable((void *)caps);
 	}
 }