From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Date: Wed, 29 May 2024 13:34:29 +0000 (+0100)
Subject: cpu: Do not warn on arch_register_cpu() returning -EPROBE_DEFER
X-Git-Tag: v6.11-rc1~217^2^2~19
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d830ef3ac56941089f49ec13c80ea4aaa3c2e6c0;p=thirdparty%2Fkernel%2Flinux.git

cpu: Do not warn on arch_register_cpu() returning -EPROBE_DEFER

For arm64 the CPU registration cannot complete until the ACPI
interpreter 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>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Tested-by: Miguel Luis <miguel.luis@oracle.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20240529133446.28446-3-Jonathan.Cameron@huawei.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index c61ecb0c2ae29..1487cd9761a44 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 && ret != -EPROBE_DEFER)
 			pr_warn("register_cpu %d failed (%d)\n", i, ret);
 	}
 }