4 files changed, 11 insertions, 3 deletions

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 6bb680671088..7491e73d9253 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -347,6 +347,14 @@ static void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
         struct mpc_intsrc mp_irq;
 
         /*
+         * Check bus_irq boundary.
+         */
+        if (bus_irq >= NR_IRQS_LEGACY) {
+                pr_warn("Invalid bus_irq %u for legacy override\n", bus_irq);
+                return;
+        }
+
+        /*
          * Convert 'gsi' to 'ioapic.pin'.
          */
         ioapic = mp_find_ioapic(gsi);
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index b4f5f73febdb..237e9c2341c7 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2093,7 +2093,7 @@ static inline void __init check_timer(void)
                         int idx;
                         idx = find_irq_entry(apic1, pin1, mp_INT);
                         if (idx != -1 && irq_trigger(idx))
-                                unmask_ioapic_irq(irq_get_chip_data(0));
+                                unmask_ioapic_irq(irq_get_irq_data(0));
                 }
                 irq_domain_deactivate_irq(irq_data);
                 irq_domain_activate_irq(irq_data);
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index bb5abe8f5fd4..3b9e220621f8 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -134,6 +134,7 @@ static void init_amd_k6(struct cpuinfo_x86 *c)
 
                 n = K6_BUG_LOOP;
                 f_vide = vide;
+                OPTIMIZER_HIDE_VAR(f_vide);
                 d = rdtsc();
                 while (n--)
                         f_vide();
diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c
index 3fe45f84ced4..cbf1f6ba39a8 100644
--- a/arch/x86/kernel/devicetree.c
+++ b/arch/x86/kernel/devicetree.c
@@ -235,8 +235,7 @@ static void __init dtb_add_ioapic(struct device_node *dn)
 
         ret = of_address_to_resource(dn, 0, &r);
         if (ret) {
-                printk(KERN_ERR "Can't obtain address from node %s.\n",
-                                dn->full_name);
+                printk(KERN_ERR "Can't obtain address from device node %pOF.\n", dn);
                 return;
         }
         mp_register_ioapic(++ioapic_id, r.start, gsi_top, &cfg);