diff mbox series

[42/58] x86/apic: Simplify X2APIC ID validation

Message ID 20230717223225.574767249@linutronix.de
State New
Headers
Series x86/apic: Decrapification and static calls |

Commit Message

Thomas Gleixner July 17, 2023, 11:15 p.m. UTC 
  No point in doing the zero equals unlimited check and if not zero compare
against the real number.

Unlimited is UINT_MAX. So initialize the variable with UINT_MAX and compare
less than or equal.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 arch/x86/kernel/apic/x2apic_phys.c |    7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)
diff mbox series

Patch

--- a/arch/x86/kernel/apic/x2apic_phys.c
+++ b/arch/x86/kernel/apic/x2apic_phys.c
@@ -8,7 +8,7 @@ 
 int x2apic_phys;
 
 static struct apic apic_x2apic_phys;
-static u32 x2apic_max_apicid __ro_after_init;
+static u32 x2apic_max_apicid __ro_after_init = UINT_MAX;
 
 void __init x2apic_set_max_apicid(u32 apicid)
 {
@@ -125,10 +125,7 @@  static int x2apic_phys_probe(void)
 /* Common x2apic functions, also used by x2apic_cluster */
 int x2apic_apic_id_valid(u32 apicid)
 {
-	if (x2apic_max_apicid && apicid > x2apic_max_apicid)
-		return 0;
-
-	return 1;
+	return apicid <= x2apic_max_apicid;
 }
 
 unsigned int x2apic_get_apic_id(unsigned long id)