arm64: Slightly improve the warning on CPU0 enable-method

Commit e8765b265a69 (arm64: read enable-method for CPU0) introduced
checks for the enable method on CPU0 (to be later used with CPU
suspend). However, if the kernel is compiled for UP and a DT file is
used with a method like 'spin-table', Linux complains about 'invalid
enable method'. This patch turns it into an 'unsupported enable method'
warning.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 264666e62848c19ba9252c80e895ffec9ad1d391)
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/arch/arm64/kernel/cpu_ops.c b/arch/arm64/kernel/cpu_ops.c
index aa0c9e78dbe139883f726be1221ed2ec74f3e017..04efea8fe4bcde40f1fda6df56f24053e017d7a0 100644 (file)
--- a/arch/arm64/kernel/cpu_ops.c
+++ b/arch/arm64/kernel/cpu_ops.c
@@ -68,8 +68,8 @@ int __init cpu_read_ops(struct device_node *dn, int cpu)
 
        cpu_ops[cpu] = cpu_get_ops(enable_method);
        if (!cpu_ops[cpu]) {
-               pr_err("%s: invalid enable-method property: %s\n",
-                      dn->full_name, enable_method);
+               pr_warn("%s: unsupported enable-method property: %s\n",
+                       dn->full_name, enable_method);
                return -EOPNOTSUPP;
        }