[PATCHv3 3/6] arm: spectre-v2: use arm_smccc_1_1_get_conduit()
From: Mark Rutland <mark.rutland@arm.com>
Date: 2019-08-09 13:23:49
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Now that we have arm_smccc_1_1_get_conduit(), we can hide the PSCI implementation details from the arm spectre-v2 code, so let's do so. As arm_smccc_1_1_get_conduit() implicitly checks that the SMCCC version is at least SMCCC_VERSION_1_1, we no longer need to check this explicitly where switch statements have a default case. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Marc Zyngier <redacted> Cc: Russell King <linux@armlinux.org.uk> --- arch/arm/mm/proc-v7-bugs.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mm/proc-v7-bugs.c b/arch/arm/mm/proc-v7-bugs.c
index 9a07916af8dd..54d87506d3b5 100644
--- a/arch/arm/mm/proc-v7-bugs.c
+++ b/arch/arm/mm/proc-v7-bugs.c@@ -1,7 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include <linux/arm-smccc.h> #include <linux/kernel.h> -#include <linux/psci.h> #include <linux/smp.h> #include <asm/cp15.h>
@@ -75,11 +74,8 @@ static void cpu_v7_spectre_init(void) case ARM_CPU_PART_CORTEX_A72: { struct arm_smccc_res res; - if (psci_ops.smccc_version == SMCCC_VERSION_1_0) - break; - - switch (psci_ops.conduit) { - case PSCI_CONDUIT_HVC: + switch (arm_smccc_1_1_get_conduit()) { + case SMCCC_CONDUIT_HVC: arm_smccc_1_1_hvc(ARM_SMCCC_ARCH_FEATURES_FUNC_ID, ARM_SMCCC_ARCH_WORKAROUND_1, &res); if ((int)res.a0 != 0)
@@ -90,7 +86,7 @@ static void cpu_v7_spectre_init(void) spectre_v2_method = "hypervisor"; break; - case PSCI_CONDUIT_SMC: + case SMCCC_CONDUIT_SMC: arm_smccc_1_1_smc(ARM_SMCCC_ARCH_FEATURES_FUNC_ID, ARM_SMCCC_ARCH_WORKAROUND_1, &res); if ((int)res.a0 != 0)
--
2.11.0
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