Merge tag 'acpi-6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These fix a general ACPI processor driver regression and an ia64 build
  issue, both introduced recently.

  Specifics:

   - Fix recently introduced uninitialized memory access issue in the
     ACPI processor driver (Michal Wilczynski)

   - Fix ia64 build inadvertently broken by recent ACPI processor driver
     changes, which is prudent to do for 6.6 even though ia64 support is
     slated for removal in 6.7 (Ard Biesheuvel)"

* tag 'acpi-6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: processor: Fix uninitialized access of buf in acpi_set_pdc_bits()
  acpi: Provide ia64 dummy implementation of acpi_proc_quirk_mwait_check()

arch/ia64/kernel/acpi.c

@@ -907,3 +907,7 @@ EXPORT_SYMBOL(acpi_unregister_ioapic);
  * TBD when IA64 starts to support suspend...
  */
 int acpi_suspend_lowlevel(void) { return 0; }
+
+void acpi_proc_quirk_mwait_check(void)
+{
+}

drivers/acpi/processor_pdc.c

@@ -19,6 +19,7 @@ static void acpi_set_pdc_bits(u32 *buf)
 {
 	buf[0] = ACPI_PDC_REVISION_ID;
 	buf[1] = 1;
+	buf[2] = 0;
 
 	/* Twiddle arch-specific bits needed for _PDC */
 	arch_acpi_set_proc_cap_bits(&buf[2]);