From: Sudeep Holla <Sudeep.Holla@arm.com>
Date: Mon, 18 Jun 2018 15:34:22 +0100
Subject: ARM: cpuidle: silence error on driver registration failure
Git-commit: 818489e511a3a38d4c9c120675e0700608925800
Patch-mainline: v4.19-rc1
References: fate#326530,fate#326531,fate#326535,fate#326538,fate#326539
It's perfectly fine to have multiple cpuidle driver compiled in the
build configuration. However, it's not good to throw error on driver
registration failure if some other driver is already initialised and
assigned. In such cases, __cpuidle_register_driver returns -EBUSY and
we can check for such error before throwing the error.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/cpuidle/cpuidle-arm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/cpuidle/cpuidle-arm.c b/drivers/cpuidle/cpuidle-arm.c
index e07bc7ace774..073557f433eb 100644
--- a/drivers/cpuidle/cpuidle-arm.c
+++ b/drivers/cpuidle/cpuidle-arm.c
@@ -105,7 +105,8 @@ static int __init arm_idle_init_cpu(int cpu)
ret = cpuidle_register_driver(drv);
if (ret) {
- pr_err("Failed to register cpuidle driver\n");
+ if (ret != -EBUSY)
+ pr_err("Failed to register cpuidle driver\n");
goto out_kfree_drv;
}
--
2.11.0