diff options
| author | James Morse <james.morse@arm.com> | 2023-09-01 14:51:02 +0100 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2024-01-08 12:37:48 +0000 |
| commit | f3e6a62e1310bf636a40e13ac5aba640c9bbf80d (patch) | |
| tree | 7893187bcd68d5bd799caa8946d031c6ae4101b7 | |
| parent | 80a6b08f63e92c3c57e11e1c59d10d450af0645c (diff) | |
drivers: base: Print a warning instead of panic() when register_cpu() fails
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>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
| -rw-r--r-- | drivers/base/cpu.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index f12f3bc4a6ca..47de0f140ba6 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -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); } } |