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From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
To: <linux-pm@vger.kernel.org>, <loongarch@lists.linux.dev>,
	<linux-acpi@vger.kernel.org>, <linux-arch@vger.kernel.org>,
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	<kvmarm@lists.linux.dev>, <x86@kernel.org>, Russell King
	<linux@armlinux.org.uk>, "Rafael J . Wysocki" <rafael@kernel.org>, Miguel
 Luis <miguel.luis@oracle.com>, James Morse <james.morse@arm.com>, Salil Mehta
	<salil.mehta@huawei.com>, Jean-Philippe Brucker <jean-philippe@linaro.org>,
	Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>
CC: <linuxarm@huawei.com>, <justin.he@arm.com>, <jianyong.wu@arm.com>
Subject: [PATCH v5 01/18] cpu: Do not warn on arch_register_cpu() returning -EPROBE_DEFER
Date: Fri, 12 Apr 2024 15:37:02 +0100
Message-ID: <20240412143719.11398-2-Jonathan.Cameron@huawei.com>
In-Reply-To: <20240412143719.11398-1-Jonathan.Cameron@huawei.com>
References: <20240412143719.11398-1-Jonathan.Cameron@huawei.com>
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For arm64 the CPU registration cannot complete until the ACPI intepretter
us up and running so in those cases the arch specific
arch_register_cpu() will return -EPROBE_DEFER at this stage and the
registration will be attempted later.

Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

---
v5: New patch.
    Note that for now no arch_register_cpu() calls return -EPROBE_DEFER
    so it has no impact until the arm64 one is added later in this series.
---
 drivers/base/cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 56fba44ba391..b9d0d14e5960 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -558,7 +558,7 @@ static void __init cpu_dev_register_generic(void)
 
 	for_each_present_cpu(i) {
 		ret = arch_register_cpu(i);
-		if (ret)
+		if (ret != -EPROBE_DEFER)
 			pr_warn("register_cpu %d failed (%d)\n", i, ret);
 	}
 }
-- 
2.39.2