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x86: dt: Use of_get_cpu_hwid()

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Replace open coded parsing of CPU nodes' 'reg' property with
of_get_cpu_hwid().

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: x86@kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211006164332.1981454-11-robh@kernel.org
This commit is contained in:
Rob Herring 2021-10-06 11:43:30 -05:00
parent ada03c68aa
commit 7688fa1025
1 changed files with 2 additions and 3 deletions
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5
arch/x86/kernel/devicetree.c
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@ -139,12 +139,11 @@ static void __init dtb_cpu_setup(void)
{
struct device_node *dn;
u32 apic_id, version;
int ret;
version = GET_APIC_VERSION(apic_read(APIC_LVR));
for_each_of_cpu_node(dn) {
ret = of_property_read_u32(dn, "reg", &apic_id);
if (ret < 0) {
apic_id = of_get_cpu_hwid(dn, 0);
if (apic_id == ~0U) {
pr_warn("%pOF: missing local APIC ID\n", dn);
continue;
}