linux-kernel - [RFC PATCH v6 2/7] psci: Let arm_smccc_1_1

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Message-Id: <20191024110209.21328-3-jianyong.wu@arm.com>
Date:   Thu, 24 Oct 2019 19:02:04 +0800
From:   Jianyong Wu <jianyong.wu@....com>
To:     netdev@...r.kernel.org, yangbo.lu@....com, john.stultz@...aro.org,
        tglx@...utronix.de, pbonzini@...hat.com,
        sean.j.christopherson@...el.com, maz@...nel.org,
        richardcochran@...il.com, Mark.Rutland@....com, will@...nel.org,
        suzuki.poulose@....com
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kvmarm@...ts.cs.columbia.edu, kvm@...r.kernel.org,
        Steve.Capper@....com, Kaly.Xin@....com, justin.he@....com,
        jianyong.wu@....com, nd@....com
Subject: [RFC PATCH v6 2/7] psci: Let arm_smccc_1_1_invoke available by modules

Export arm_smccc_1_1_get_conduit and apply it to get conduit
in arm_smccc_1_1_invoke, then modules can use this arm_smccc_1_1_invoke.

Signed-off-by: Jianyong Wu <jianyong.wu@....com>
---
 drivers/firmware/psci/psci.c | 1 +
 include/linux/arm-smccc.h    | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index 5f31f1bea1af..cf509171422c 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -71,6 +71,7 @@ enum arm_smccc_conduit arm_smccc_1_1_get_conduit(void)
 		return SMCCC_CONDUIT_NONE;
 	}
 }
+EXPORT_SYMBOL(arm_smccc_1_1_get_conduit);
 
 typedef unsigned long (psci_fn)(unsigned long, unsigned long,
 				unsigned long, unsigned long);
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h
index 701fa1da6b4a..6f82c87308ed 100644
--- a/include/linux/arm-smccc.h
+++ b/include/linux/arm-smccc.h
@@ -373,7 +373,7 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1,
  * The return value also provides the conduit that was used.
  */
 #define arm_smccc_1_1_invoke(...) ({					\
-		int method = psci_ops.conduit;				\
+		int method = arm_smccc_1_1_get_conduit();		\
 		switch (method) {					\
 		case PSCI_CONDUIT_HVC:					\
 			arm_smccc_1_1_hvc(__VA_ARGS__);			\
-- 
2.17.1