Merge tag 'pm+acpi-3.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:
 "These are three regression fixes, two recent (generic power domains,
  suspend-to-idle) and one older (cpufreq), an ACPI blacklist entry for
  one more machine having problems with Windows 8 compatibility, a minor
  cpufreq driver fix (cpufreq-dt) and a fixup for new callback
  definitions (generic power domains).

  Specifics:

   - Fix a crash in the suspend-to-idle code path introduced by a recent
     commit that forgot to check a pointer against NULL before
     dereferencing it (Dmitry Eremin-Solenikov).

   - Fix a boot crash on Exynos5 introduced by a recent commit making
     that platform use generic Device Tree bindings for power domains
     which exposed a weakness in the generic power domains framework
     leading to that crash (Ulf Hansson).

   - Fix a crash during system resume on systems where cpufreq depends
     on Operation Performance Points (OPP) for functionality, but
     CONFIG_OPP is not set.  This leads the cpufreq driver registration
     to fail, but the resume code attempts to restore the pre-suspend
     cpufreq configuration (which does not exist) nevertheless and
     crashes.  From Geert Uytterhoeven.

   - Add a new ACPI blacklist entry for Dell Vostro 3546 that has
     problems if it is reported as Windows 8 compatible to the BIOS
     (Adam Lee).

   - Fix swapped arguments in an error message in the cpufreq-dt driver
     (Abhilash Kesavan).

   - Fix up the prototypes of new callbacks in struct generic_pm_domain
     to make them more useful.  Users of those callbacks will be added
     in 3.19 and it's better for them to be based on the correct struct
     definition in mainline from the start.  From Ulf Hansson and Kevin
     Hilman"

* tag 'pm+acpi-3.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / Domains: Fix initial default state of the need_restore flag
  PM / sleep: Fix entering suspend-to-IDLE if no freeze_oops is set
  PM / Domains: Change prototype for the attach and detach callbacks
  cpufreq: Avoid crash in resume on SMP without OPP
  cpufreq: cpufreq-dt: Fix arguments in clock failure error message
  ACPI / blacklist: blacklist Win8 OSI for Dell Vostro 3546

1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 4ca9a33ff620..c347e3ce3a55 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -146,7 +146,7 @@ static int platform_suspend_prepare(suspend_state_t state)
 
 static int platform_suspend_prepare_late(suspend_state_t state)
 {
-	return state == PM_SUSPEND_FREEZE && freeze_ops->prepare ?
+	return state == PM_SUSPEND_FREEZE && freeze_ops && freeze_ops->prepare ?
 		freeze_ops->prepare() : 0;
 }
 
@@ -164,7 +164,7 @@ static void platform_resume_noirq(suspend_state_t state)
 
 static void platform_resume_early(suspend_state_t state)
 {
-	if (state == PM_SUSPEND_FREEZE && freeze_ops->restore)
+	if (state == PM_SUSPEND_FREEZE && freeze_ops && freeze_ops->restore)
 		freeze_ops->restore();
 }