x86/apic, ACPI: Fix incorrect assignment when handling apic/x2apic entries

By pure accident the bug makes no functional difference, because the only
expression where we are using these values is (!count && !x2count), in which
the variables are interchangeable, but it makes sense to fix the bug
nevertheless.

Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-acpi@vger.kernel.org
Cc: rjw@rjwysocki.net
Link: http://lkml.kernel.org/r/1470986507-24191-1-git-send-email-bhe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 2087bea..1ad5fe2 100644 (file)
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1018,8 +1018,8 @@ static int __init acpi_parse_madt_lapic_entries(void)
                        return ret;
                }
 
-               x2count = madt_proc[0].count;
-               count = madt_proc[1].count;
+               count = madt_proc[0].count;
+               x2count = madt_proc[1].count;
        }
        if (!count && !x2count) {
                printk(KERN_ERR PREFIX "No LAPIC entries present\n");