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drivers: base: Print a warning instead of panic() when register_cpu() fails

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loongarch, mips, parisc, riscv and sh all print a warning if
register_cpu() returns an error. Architectures that use
GENERIC_CPU_DEVICES call panic() instead.

Errors in this path indicate something is wrong with the firmware
description of the platform, but the kernel is able to keep running.

Downgrade this to a warning to make it easier to debug this issue.

This will allow architectures that switching over to GENERIC_CPU_DEVICES
to drop their warning, but keep the existing behaviour.

Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Signed-off-by: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/E1r5R3W-00CszU-GM@rmk-PC.armlinux.org.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
James Morse 2023-11-21 13:44:46 +00:00 committed by Greg Kroah-Hartman
parent d631a881f1
commit ca00f7d999
1 changed files with 4 additions and 3 deletions
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7
drivers/base/cpu.c
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@ -551,14 +551,15 @@ void __weak arch_unregister_cpu(int num)
static void __init cpu_dev_register_generic(void)
{
int i;
int i, ret;
if (!IS_ENABLED(CONFIG_GENERIC_CPU_DEVICES))
return;
for_each_present_cpu(i) {
if (arch_register_cpu(i))
panic("Failed to register CPU device");
ret = arch_register_cpu(i);
if (ret)
pr_warn("register_cpu %d failed (%d)\n", i, ret);
}
}