Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
* 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / Hibernate: Drop the check of swap space size for compressed image
PM / shmobile: fix A3SP suspend method
PM / Domains: Skip governor functions for CONFIG_PM_RUNTIME unset
PM / Domains: Fix build for CONFIG_PM_SLEEP unset
PM: Make sysrq-o be available for CONFIG_PM unset
diff --git a/arch/arm/mach-shmobile/pm-sh7372.c b/arch/arm/mach-shmobile/pm-sh7372.c
index 77b8fc1..fcf8b17 100644
--- a/arch/arm/mach-shmobile/pm-sh7372.c
+++ b/arch/arm/mach-shmobile/pm-sh7372.c
@@ -276,7 +276,7 @@
* Serial consoles make use of SCIF hardware located in A3SP,
* keep such power domain on if "no_console_suspend" is set.
*/
- return console_suspend_enabled ? -EBUSY : 0;
+ return console_suspend_enabled ? 0 : -EBUSY;
}
struct sh7372_pm_domain sh7372_a3sp = {
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 92e6a90..978bbf7 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1429,6 +1429,8 @@
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+
/**
* pm_genpd_default_suspend - Default "device suspend" for PM domians.
* @dev: Device to handle.
@@ -1517,6 +1519,19 @@
return cb ? cb(dev) : pm_generic_thaw(dev);
}
+#else /* !CONFIG_PM_SLEEP */
+
+#define pm_genpd_default_suspend NULL
+#define pm_genpd_default_suspend_late NULL
+#define pm_genpd_default_resume_early NULL
+#define pm_genpd_default_resume NULL
+#define pm_genpd_default_freeze NULL
+#define pm_genpd_default_freeze_late NULL
+#define pm_genpd_default_thaw_early NULL
+#define pm_genpd_default_thaw NULL
+
+#endif /* !CONFIG_PM_SLEEP */
+
/**
* pm_genpd_init - Initialize a generic I/O PM domain object.
* @genpd: PM domain object to initialize.
diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c
index 51527ee..66a265b 100644
--- a/drivers/base/power/domain_governor.c
+++ b/drivers/base/power/domain_governor.c
@@ -12,6 +12,8 @@
#include <linux/pm_qos.h>
#include <linux/hrtimer.h>
+#ifdef CONFIG_PM_RUNTIME
+
/**
* default_stop_ok - Default PM domain governor routine for stopping devices.
* @dev: Device to check.
@@ -137,16 +139,28 @@
return true;
}
-struct dev_power_governor simple_qos_governor = {
- .stop_ok = default_stop_ok,
- .power_down_ok = default_power_down_ok,
-};
-
static bool always_on_power_down_ok(struct dev_pm_domain *domain)
{
return false;
}
+#else /* !CONFIG_PM_RUNTIME */
+
+bool default_stop_ok(struct device *dev)
+{
+ return false;
+}
+
+#define default_power_down_ok NULL
+#define always_on_power_down_ok NULL
+
+#endif /* !CONFIG_PM_RUNTIME */
+
+struct dev_power_governor simple_qos_governor = {
+ .stop_ok = default_stop_ok,
+ .power_down_ok = default_power_down_ok,
+};
+
/**
* pm_genpd_gov_always_on - A governor implementing an always-on policy
*/
diff --git a/kernel/Makefile b/kernel/Makefile
index f70396e..2d9de86 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -23,6 +23,7 @@
endif
obj-y += sched/
+obj-y += power/
obj-$(CONFIG_FREEZER) += freezer.o
obj-$(CONFIG_PROFILING) += profile.o
@@ -52,8 +53,6 @@
obj-$(CONFIG_UID16) += uid16.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_KALLSYMS) += kallsyms.o
-obj-$(CONFIG_PM) += power/
-obj-$(CONFIG_FREEZER) += power/
obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
obj-$(CONFIG_KEXEC) += kexec.o
obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 3739ecc..8742fd0 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -773,8 +773,7 @@
pr_debug("PM: Free swap pages: %u\n", free_swap);
- required = PAGES_FOR_IO + ((flags & SF_NOCOMPRESS_MODE) ?
- nr_pages : (nr_pages * LZO_CMP_PAGES) / LZO_UNC_PAGES + 1);
+ required = PAGES_FOR_IO + nr_pages;
return free_swap > required;
}
@@ -802,10 +801,12 @@
printk(KERN_ERR "PM: Cannot get swap writer\n");
return error;
}
- if (!enough_swap(pages, flags)) {
- printk(KERN_ERR "PM: Not enough free swap\n");
- error = -ENOSPC;
- goto out_finish;
+ if (flags & SF_NOCOMPRESS_MODE) {
+ if (!enough_swap(pages, flags)) {
+ printk(KERN_ERR "PM: Not enough free swap\n");
+ error = -ENOSPC;
+ goto out_finish;
+ }
}
memset(&snapshot, 0, sizeof(struct snapshot_handle));
error = snapshot_read_next(&snapshot);