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Commit 7dee8dff authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'pm+acpi-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm 

Pull ACPI and power management fixes from Rafael Wysocki:

 - The resume part of user space driven hibernation (s2disk) is now
   broken after the change that moved the creation of memory bitmaps to
   after the freezing of tasks, because I forgot that the resume utility
   loaded the image before freezing tasks and needed the bitmaps for
   that.  The fix adds special handling for that case.

 - One of recent commits changed the export of acpi_bus_get_device() to
   EXPORT_SYMBOL_GPL(), which was technically correct but broke existing
   binary modules using that function including one in particularly
   widespread use.  Change it back to EXPORT_SYMBOL().

 - The intel_pstate driver sometimes fails to disable turbo if its
   no_turbo sysfs attribute is set.  Fix from Srinivas Pandruvada.

 - One of recent cpufreq fixes forgot to update a check in cpufreq-cpu0
   which still (incorrectly) treats non-NULL as non-error.  Fix from
   Philipp Zabel.

 - The SPEAr cpufreq driver uses a wrong variable type in one place
   preventing it from catching errors returned by one of the functions
   called by it.  Fix from Sachin Kamat.

* tag 'pm+acpi-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: Use EXPORT_SYMBOL() for acpi_bus_get_device()
  intel_pstate: fix no_turbo
  cpufreq: cpufreq-cpu0: NULL is a valid regulator, part 2
  cpufreq: SPEAr: Fix incorrect variable type
  PM / hibernate: Fix user space driven resume regression
parents 3dbecf0a 726dcbe5

drivers/acpi/scan.c

+1 −1
Original line number Diff line number Diff line
@@ -968,7 +968,7 @@ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) 
	}

	return 0;

}

EXPORT_SYMBOL_GPL(acpi_bus_get_device);

EXPORT_SYMBOL(acpi_bus_get_device);



int acpi_device_add(struct acpi_device *device,

		    void (*release)(struct device *))

drivers/cpufreq/cpufreq-cpu0.c

+1 −1
Original line number Diff line number Diff line
@@ -229,7 +229,7 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev) 
	if (of_property_read_u32(np, "clock-latency", &transition_latency))

		transition_latency = CPUFREQ_ETERNAL;



	if (cpu_reg) {

	if (!IS_ERR(cpu_reg)) {

		struct opp *opp;

		unsigned long min_uV, max_uV;

		int i;

drivers/cpufreq/intel_pstate.c

+4 −1
Original line number Diff line number Diff line
@@ -394,6 +394,9 @@ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate) 
	trace_cpu_frequency(pstate * 100000, cpu->cpu);



	cpu->pstate.current_pstate = pstate;

	if (limits.no_turbo)

		wrmsrl(MSR_IA32_PERF_CTL, BIT(32) | (pstate << 8));

	else

		wrmsrl(MSR_IA32_PERF_CTL, pstate << 8);



}

drivers/cpufreq/spear-cpufreq.c

+1 −1
Original line number Diff line number Diff line
@@ -113,7 +113,7 @@ static int spear_cpufreq_target(struct cpufreq_policy *policy, 
		unsigned int target_freq, unsigned int relation)

{

	struct cpufreq_freqs freqs;

	unsigned long newfreq;

	long newfreq;

	struct clk *srcclk;

	int index, ret, mult = 1;

kernel/power/snapshot.c

+4 −1
Original line number Diff line number Diff line
@@ -743,6 +743,9 @@ int create_basic_memory_bitmaps(void) 
	struct memory_bitmap *bm1, *bm2;

	int error = 0;



	if (forbidden_pages_map && free_pages_map)

		return 0;

	else

		BUG_ON(forbidden_pages_map || free_pages_map);



	bm1 = kzalloc(sizeof(struct memory_bitmap), GFP_KERNEL);