diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-12 13:17:27 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-12 13:17:27 -0700 |
commit | 947ec0b0c1e7e80eef4fe64f7763a06d0cf04d2e (patch) | |
tree | 29547b6975d58c3b252f08dc6c2dbda3b9adfa88 | |
parent | c53567ad4528b6efefc3fc22a354d20f6226a098 (diff) | |
parent | 5818a6e2519b34cd6d0220d89f5729ab2725e1bf (diff) |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
PM: Add empty suspend/resume device irq functions
PM/Hibernate: Move NVS routines into a seperate file (v2).
PM/Hibernate: Rename disk.c to hibernate.c
PM: Separate suspend to RAM functionality from core
Driver Core: Rework platform suspend/resume, print warning
PM: Remove device_type suspend()/resume()
PM/Hibernate: Move memory shrinking to snapshot.c (rev. 2)
PM/Suspend: Do not shrink memory before suspend
PM: Remove bus_type suspend_late()/resume_early() V2
PM core: rename suspend and resume functions
PM: Rename device_power_down/up()
PM: Remove unused asm/suspend.h
x86: unify power/cpu_(32|64).c
x86: unify power/cpu_(32|64) copyright notes
x86: unify power/cpu_(32|64) regarding restoring processor state
x86: unify power/cpu_(32|64) regarding saving processor state
x86: unify power/cpu_(32|64) global variables
x86: unify power/cpu_(32|64) headers
PM: Warn if interrupts are enabled during suspend-resume of sysdevs
PM/ACPI/x86: Fix sparse warning in arch/x86/kernel/acpi/sleep.c
33 files changed, 984 insertions, 1122 deletions
diff --git a/Documentation/power/devices.txt b/Documentation/power/devices.txt index 421e7d00ffd..c9abbd86bc1 100644 --- a/Documentation/power/devices.txt +++ b/Documentation/power/devices.txt @@ -75,9 +75,6 @@ may need to apply in domain-specific ways to their devices: struct bus_type { ... int (*suspend)(struct device *dev, pm_message_t state); - int (*suspend_late)(struct device *dev, pm_message_t state); - - int (*resume_early)(struct device *dev); int (*resume)(struct device *dev); }; @@ -226,20 +223,7 @@ The phases are seen by driver notifications issued in this order: This call should handle parts of device suspend logic that require sleeping. It probably does work to quiesce the device which hasn't - been abstracted into class.suspend() or bus.suspend_late(). - - 3 bus.suspend_late(dev, message) is called with IRQs disabled, and - with only one CPU active. Until the bus.resume_early() phase - completes (see later), IRQs are not enabled again. This method - won't be exposed by all busses; for message based busses like USB, - I2C, or SPI, device interactions normally require IRQs. This bus - call may be morphed into a driver call with bus-specific parameters. - - This call might save low level hardware state that might otherwise - be lost in the upcoming low power state, and actually put the - device into a low power state ... so that in some cases the device - may stay partly usable until this late. This "late" call may also - help when coping with hardware that behaves badly. + been abstracted into class.suspend(). The pm_message_t parameter is currently used to refine those semantics (described later). @@ -351,19 +335,11 @@ devices processing each phase's calls before the next phase begins. The phases are seen by driver notifications issued in this order: - 1 bus.resume_early(dev) is called with IRQs disabled, and with - only one CPU active. As with bus.suspend_late(), this method - won't be supported on busses that require IRQs in order to - interact with devices. - - This reverses the effects of bus.suspend_late(). - - 2 bus.resume(dev) is called next. This may be morphed into a device - driver call with bus-specific parameters; implementations may sleep. - - This reverses the effects of bus.suspend(). + 1 bus.resume(dev) reverses the effects of bus.suspend(). This may + be morphed into a device driver call with bus-specific parameters; + implementations may sleep. - 3 class.resume(dev) is called for devices associated with a class + 2 class.resume(dev) is called for devices associated with a class that has such a method. Implementations may sleep. This reverses the effects of class.suspend(), and would usually diff --git a/arch/alpha/include/asm/suspend.h b/arch/alpha/include/asm/suspend.h deleted file mode 100644 index c7042d57585..00000000000 --- a/arch/alpha/include/asm/suspend.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ALPHA_SUSPEND_H -#define __ALPHA_SUSPEND_H - -/* Dummy include. */ - -#endif /* __ALPHA_SUSPEND_H */ diff --git a/arch/arm/include/asm/suspend.h b/arch/arm/include/asm/suspend.h deleted file mode 100644 index cf0d0bdee74..00000000000 --- a/arch/arm/include/asm/suspend.h +++ /dev/null @@ -1,4 +0,0 @@ -#ifndef _ASMARM_SUSPEND_H -#define _ASMARM_SUSPEND_H - -#endif diff --git a/arch/ia64/include/asm/suspend.h b/arch/ia64/include/asm/suspend.h deleted file mode 100644 index b05bbb6074e..00000000000 --- a/arch/ia64/include/asm/suspend.h +++ /dev/null @@ -1 +0,0 @@ -/* dummy (must be non-empty to prevent prejudicial removal...) */ diff --git a/arch/m68k/include/asm/suspend.h b/arch/m68k/include/asm/suspend.h deleted file mode 100644 index 57b3ddb4d26..00000000000 --- a/arch/m68k/include/asm/suspend.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _M68K_SUSPEND_H -#define _M68K_SUSPEND_H - -/* Dummy include. */ - -#endif /* _M68K_SUSPEND_H */ diff --git a/arch/mips/include/asm/suspend.h b/arch/mips/include/asm/suspend.h deleted file mode 100644 index 2562f8f9be0..00000000000 --- a/arch/mips/include/asm/suspend.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_SUSPEND_H -#define __ASM_SUSPEND_H - -/* Somewhen... Maybe :-) */ - -#endif /* __ASM_SUSPEND_H */ diff --git a/arch/s390/include/asm/suspend.h b/arch/s390/include/asm/suspend.h deleted file mode 100644 index 1f34580e67a..00000000000 --- a/arch/s390/include/asm/suspend.h +++ /dev/null @@ -1,5 +0,0 @@ -#ifndef __ASM_S390_SUSPEND_H -#define __ASM_S390_SUSPEND_H - -#endif - diff --git a/arch/um/include/asm/suspend.h b/arch/um/include/asm/suspend.h deleted file mode 100644 index f4e8e007f46..00000000000 --- a/arch/um/include/asm/suspend.h +++ /dev/null @@ -1,4 +0,0 @@ -#ifndef __UM_SUSPEND_H -#define __UM_SUSPEND_H - -#endif diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index 7c243a2c511..ca93638ba43 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -104,7 +104,7 @@ int acpi_save_state_mem(void) initial_gs = per_cpu_offset(smp_processor_id()); #endif initial_code = (unsigned long)wakeup_long64; - saved_magic = 0x123456789abcdef0; + saved_magic = 0x123456789abcdef0L; #endif /* CONFIG_64BIT */ return 0; diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c index 49e0939bac4..79302e9a33a 100644 --- a/arch/x86/kernel/apm_32.c +++ b/arch/x86/kernel/apm_32.c @@ -1233,9 +1233,9 @@ static int suspend(int vetoable) int err; struct apm_user *as; - device_suspend(PMSG_SUSPEND); + dpm_suspend_start(PMSG_SUSPEND); - device_power_down(PMSG_SUSPEND); + dpm_suspend_noirq(PMSG_SUSPEND); local_irq_disable(); sysdev_suspend(PMSG_SUSPEND); @@ -1259,9 +1259,9 @@ static int suspend(int vetoable) sysdev_resume(); local_irq_enable(); - device_power_up(PMSG_RESUME); + dpm_resume_noirq(PMSG_RESUME); - device_resume(PMSG_RESUME); + dpm_resume_end(PMSG_RESUME); queue_event(APM_NORMAL_RESUME, NULL); spin_lock(&user_list_lock); for (as = user_list; as != NULL; as = as->next) { @@ -1277,7 +1277,7 @@ static void standby(void) { int err; - device_power_down(PMSG_SUSPEND); + dpm_suspend_noirq(PMSG_SUSPEND); local_irq_disable(); sysdev_suspend(PMSG_SUSPEND); @@ -1291,7 +1291,7 @@ static void standby(void) sysdev_resume(); local_irq_enable(); - device_power_up(PMSG_RESUME); + dpm_resume_noirq(PMSG_RESUME); } static apm_event_t get_event(void) @@ -1376,7 +1376,7 @@ static void check_events(void) ignore_bounce = 1; if ((event != APM_NORMAL_RESUME) || (ignore_normal_resume == 0)) { - device_resume(PMSG_RESUME); + dpm_resume_end(PMSG_RESUME); queue_event(event, NULL); } ignore_normal_resume = 0; diff --git a/arch/x86/power/Makefile b/arch/x86/power/Makefile index 58b32db3312..de2abbd0754 100644 --- a/arch/x86/power/Makefile +++ b/arch/x86/power/Makefile @@ -3,5 +3,5 @@ nostackp := $(call cc-option, -fno-stack-protector) CFLAGS_cpu_$(BITS).o := $(nostackp) -obj-$(CONFIG_PM_SLEEP) += cpu_$(BITS).o +obj-$(CONFIG_PM_SLEEP) += cpu.o obj-$(CONFIG_HIBERNATION) += hibernate_$(BITS).o hibernate_asm_$(BITS).o diff --git a/arch/x86/power/cpu_64.c b/arch/x86/power/cpu.c index 5343540f260..d277ef1eea5 100644 --- a/arch/x86/power/cpu_64.c +++ b/arch/x86/power/cpu.c @@ -1,5 +1,5 @@ /* - * Suspend and hibernation support for x86-64 + * Suspend support specific for i386/x86-64. * * Distribute under GPLv2 * @@ -8,18 +8,28 @@ * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org> */ -#include <linux/smp.h> #include <linux/suspend.h> -#include <asm/proto.h> -#include <asm/page.h> +#include <linux/smp.h> + #include <asm/pgtable.h> +#include <asm/proto.h> #include <asm/mtrr.h> +#include <asm/page.h> +#include <asm/mce.h> #include <asm/xcr.h> #include <asm/suspend.h> -static void fix_processor_context(void); +#ifdef CONFIG_X86_32 +static struct saved_context saved_context; +unsigned long saved_context_ebx; +unsigned long saved_context_esp, saved_context_ebp; +unsigned long saved_context_esi, saved_context_edi; +unsigned long saved_context_eflags; +#else +/* CONFIG_X86_64 */ struct saved_context saved_context; +#endif /** * __save_processor_state - save CPU registers before creating a @@ -38,19 +48,35 @@ struct saved_context saved_context; */ static void __save_processor_state(struct saved_context *ctxt) { +#ifdef CONFIG_X86_32 + mtrr_save_fixed_ranges(NULL); +#endif kernel_fpu_begin(); /* * descriptor tables */ +#ifdef CONFIG_X86_32 + store_gdt(&ctxt->gdt); + store_idt(&ctxt->idt); +#else +/* CONFIG_X86_64 */ store_gdt((struct desc_ptr *)&ctxt->gdt_limit); store_idt((struct desc_ptr *)&ctxt->idt_limit); +#endif store_tr(ctxt->tr); /* XMM0..XMM15 should be handled by kernel_fpu_begin(). */ /* * segment registers */ +#ifdef CONFIG_X86_32 + savesegment(es, ctxt->es); + savesegment(fs, ctxt->fs); + savesegment(gs, ctxt->gs); + savesegment(ss, ctxt->ss); +#else +/* CONFIG_X86_64 */ asm volatile ("movw %%ds, %0" : "=m" (ctxt->ds)); asm volatile ("movw %%es, %0" : "=m" (ctxt->es)); asm volatile ("movw %%fs, %0" : "=m" (ctxt->fs)); @@ -62,30 +88,87 @@ static void __save_processor_state(struct saved_context *ctxt) rdmsrl(MSR_KERNEL_GS_BASE, ctxt->gs_kernel_base); mtrr_save_fixed_ranges(NULL); + rdmsrl(MSR_EFER, ctxt->efer); +#endif + /* * control registers */ - rdmsrl(MSR_EFER, ctxt->efer); ctxt->cr0 = read_cr0(); ctxt->cr2 = read_cr2(); ctxt->cr3 = read_cr3(); +#ifdef CONFIG_X86_32 + ctxt->cr4 = read_cr4_safe(); +#else +/* CONFIG_X86_64 */ ctxt->cr4 = read_cr4(); ctxt->cr8 = read_cr8(); +#endif } +/* Needed by apm.c */ void save_processor_state(void) { __save_processor_state(&saved_context); } +#ifdef CONFIG_X86_32 +EXPORT_SYMBOL(save_processor_state); +#endif static void do_fpu_end(void) { /* - * Restore FPU regs if necessary + * Restore FPU regs if necessary. */ kernel_fpu_end(); } +static void fix_processor_context(void) +{ + int cpu = smp_processor_id(); + struct tss_struct *t = &per_cpu(init_tss, cpu); + + set_tss_desc(cpu, t); /* + * This just modifies memory; should not be + * necessary. But... This is necessary, because + * 386 hardware has concept of busy TSS or some + * similar stupidity. + */ + +#ifdef CONFIG_X86_64 + get_cpu_gdt_table(cpu)[GDT_ENTRY_TSS].type = 9; + + syscall_init(); /* This sets MSR_*STAR and related */ +#endif + load_TR_desc(); /* This does ltr */ + load_LDT(¤t->active_mm->context); /* This does lldt */ + + /* + * Now maybe reload the debug registers + */ + if (current->thread.debugreg7) { +#ifdef CONFIG_X86_32 + set_debugreg(current->thread.debugreg0, 0); + set_debugreg(current->thread.debugreg1, 1); + set_debugreg(current->thread.debugreg2, 2); + set_debugreg(current->thread.debugreg3, 3); + /* no 4 and 5 */ + set_debugreg(current->thread.debugreg6, 6); + set_debugreg(current->thread.debugreg7, 7); +#else + /* CONFIG_X86_64 */ + loaddebug(¤t->thread, 0); + loaddebug(¤t->thread, 1); + loaddebug(¤t->thread, 2); + loaddebug(¤t->thread, 3); + /* no 4 and 5 */ + loaddebug(¤t->thread, 6); + loaddebug(¤t->thread, 7); +#endif + } + +} + /** * __restore_processor_state - restore the contents of CPU registers saved * by __save_processor_state() @@ -96,9 +179,16 @@ static void __restore_processor_state(struct saved_context *ctxt) /* * control registers */ + /* cr4 was introduced in the Pentium CPU */ +#ifdef CONFIG_X86_32 + if (ctxt->cr4) + write_cr4(ctxt->cr4); +#else +/* CONFIG X86_64 */ wrmsrl(MSR_EFER, ctxt->efer); write_cr8(ctxt->cr8); write_cr4(ctxt->cr4); +#endif write_cr3(ctxt->cr3); write_cr2(ctxt->cr2); write_cr0(ctxt->cr0); @@ -107,13 +197,31 @@ static void __restore_processor_state(struct saved_context *ctxt) * now restore the descriptor tables to their proper values * ltr is done i fix_processor_context(). */ +#ifdef CONFIG_X86_32 + load_gdt(&ctxt->gdt); + load_idt(&ctxt->idt); +#else +/* CONFIG_X86_64 */ load_gdt((const struct desc_ptr *)&ctxt->gdt_limit); load_idt((const struct desc_ptr *)&ctxt->idt_limit); - +#endif /* * segment registers */ +#ifdef CONFIG_X86_32 + loadsegment(es, ctxt->es); + loadsegment(fs, ctxt->fs); + loadsegment(gs, ctxt->gs); + loadsegment(ss, ctxt->ss); + + /* + * sysenter MSRs + */ + if (boot_cpu_has(X86_FEATURE_SEP)) + enable_sep_cpu(); +#else +/* CONFIG_X86_64 */ asm volatile ("movw %0, %%ds" :: "r" (ctxt->ds)); asm volatile ("movw %0, %%es" :: "r" (ctxt->es)); asm volatile ("movw %0, %%fs" :: "r" (ctxt->fs)); @@ -123,6 +231,7 @@ static void __restore_processor_state(struct saved_context *ctxt) wrmsrl(MSR_FS_BASE, ctxt->fs_base); wrmsrl(MSR_GS_BASE, ctxt->gs_base); wrmsrl(MSR_KERNEL_GS_BASE, ctxt->gs_kernel_base); +#endif /* * restore XCR0 for xsave capable cpu's. @@ -134,41 +243,17 @@ static void __restore_processor_state(struct saved_context *ctxt) do_fpu_end(); mtrr_ap_init(); + +#ifdef CONFIG_X86_32 + mcheck_init(&boot_cpu_data); +#endif } +/* Needed by apm.c */ void restore_processor_state(void) { __restore_processor_state(&saved_context); } - -static void fix_processor_context(void) -{ - int cpu = smp_processor_id(); - struct tss_struct *t = &per_cpu(init_tss, cpu); - - /* - * This just modifies memory; should not be necessary. But... This - * is necessary, because 386 hardware has concept of busy TSS or some - * similar stupidity. - */ - set_tss_desc(cpu, t); - - get_cpu_gdt_table(cpu)[GDT_ENTRY_TSS].type = 9; - - syscall_init(); /* This sets MSR_*STAR and related */ - load_TR_desc(); /* This does ltr */ - load_LDT(¤t->active_mm->context); /* This does lldt */ - - /* - * Now maybe reload the debug registers - */ - if (current->thread.debugreg7){ - loaddebug(¤t->thread, 0); - loaddebug(¤t->thread, 1); - loaddebug(¤t->thread, 2); - loaddebug(¤t->thread, 3); - /* no 4 and 5 */ - loaddebug(¤t->thread, 6); - loaddebug(¤t->thread, 7); - } -} +#ifdef CONFIG_X86_32 +EXPORT_SYMBOL(restore_processor_state); +#endif diff --git a/arch/x86/power/cpu_32.c b/arch/x86/power/cpu_32.c deleted file mode 100644 index ce702c5b3a2..00000000000 --- a/arch/x86/power/cpu_32.c +++ /dev/null @@ -1,148 +0,0 @@ -/* - * Suspend support specific for i386. - * - * Distribute under GPLv2 - * - * Copyright (c) 2002 Pavel Machek <pavel@suse.cz> - * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org> - */ - -#include <linux/module.h> -#include <linux/suspend.h> -#include <asm/mtrr.h> -#include <asm/mce.h> -#include <asm/xcr.h> -#include <asm/suspend.h> - -static struct saved_context saved_context; - -unsigned long saved_context_ebx; -unsigned long saved_context_esp, saved_context_ebp; -unsigned long saved_context_esi, saved_context_edi; -unsigned long saved_context_eflags; - -static void __save_processor_state(struct saved_context *ctxt) -{ - mtrr_save_fixed_ranges(NULL); - kernel_fpu_begin(); - - /* - * descriptor tables - */ - store_gdt(&ctxt->gdt); - store_idt(&ctxt->idt); - store_tr(ctxt->tr); - - /* - * segment registers - */ - savesegment(es, ctxt->es); - savesegment(fs, ctxt->fs); - savesegment(gs, ctxt->gs); - savesegment(ss, ctxt->ss); - - /* - * control registers - */ - ctxt->cr0 = read_cr0(); - ctxt->cr2 = read_cr2(); - ctxt->cr3 = read_cr3(); - ctxt->cr4 = read_cr4_safe(); -} - -/* Needed by apm.c */ -void save_processor_state(void) -{ - __save_processor_state(&saved_context); -} -EXPORT_SYMBOL(save_processor_state); - -static void do_fpu_end(void) -{ - /* - * Restore FPU regs if necessary. - */ - kernel_fpu_end(); -} - -static void fix_processor_context(void) -{ - int cpu = smp_processor_id(); - struct tss_struct *t = &per_cpu(init_tss, cpu); - - set_tss_desc(cpu, t); /* - * This just modifies memory; should not be - * necessary. But... This is necessary, because - * 386 hardware has concept of busy TSS or some - * similar stupidity. - */ - - load_TR_desc(); /* This does ltr */ - load_LDT(¤t->active_mm->context); /* This does lldt */ - - /* - * Now maybe reload the debug registers - */ - if (current->thread.debugreg7) { - set_debugreg(current->thread.debugreg0, 0); - set_debugreg(current->thread.debugreg1, 1); - set_debugreg(current->thread.debugreg2, 2); - set_debugreg(current->thread.debugreg3, 3); - /* no 4 and 5 */ - set_debugreg(current->thread.debugreg6, 6); - set_debugreg(current->thread.debugreg7, 7); - } - -} - -static void __restore_processor_state(struct saved_context *ctxt) -{ - /* - * control registers - */ - /* cr4 was introduced in the Pentium CPU */ - if (ctxt->cr4) - write_cr4(ctxt->cr4); - write_cr3(ctxt->cr3); - write_cr2(ctxt->cr2); - write_cr0(ctxt->cr0); - - /* - * now restore the descriptor tables to their proper values - * ltr is done i fix_processor_context(). - */ - load_gdt(&ctxt->gdt); - load_idt(&ctxt->idt); - - /* - * segment registers - */ - loadsegment(es, ctxt->es); - loadsegment(fs, ctxt->fs); - loadsegment(gs, ctxt->gs); - loadsegment(ss, ctxt->ss); - - /* - * sysenter MSRs - */ - if (boot_cpu_has(X86_FEATURE_SEP)) - enable_sep_cpu(); - - /* - * restore XCR0 for xsave capable cpu's. - */ - if (cpu_has_xsave) - xsetbv(XCR_XFEATURE_ENABLED_MASK, pcntxt_mask); - - fix_processor_context(); - do_fpu_end(); - mtrr_ap_init(); - mcheck_init(&boot_cpu_data); -} - -/* Needed by apm.c */ -void restore_processor_state(void) -{ - __restore_processor_state(&saved_context); -} -EXPORT_SYMBOL(restore_processor_state); diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 8b4708e0624..ead3f64c41d 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -469,22 +469,6 @@ static void platform_drv_shutdown(struct device *_dev) drv->shutdown(dev); } -static int platform_drv_suspend(struct device *_dev, pm_message_t state) -{ - struct platform_driver *drv = to_platform_driver(_dev->driver); - struct platform_device *dev = to_platform_device(_dev); - - return drv->suspend(dev, state); -} - -static int platform_drv_resume(struct device *_dev) -{ - struct platform_driver *drv = to_platform_driver(_dev->driver); - struct platform_device *dev = to_platform_device(_dev); - - return drv->resume(dev); -} - /** * platform_driver_register * @drv: platform driver structure @@ -498,10 +482,10 @@ int platform_driver_register(struct platform_driver *drv) drv->driver.remove = platform_drv_remove; if (drv->shutdown) drv->driver.shutdown = platform_drv_shutdown; - if (drv->suspend) - drv->driver.suspend = platform_drv_suspend; - if (drv->resume) - drv->driver.resume = platform_drv_resume; + if (drv->suspend || drv->resume) + pr_warning("Platform driver '%s' needs updating - please use " + "dev_pm_ops\n", drv->driver.name); + return driver_register(&drv->driver); } EXPORT_SYMBOL_GPL(platform_driver_register); @@ -633,10 +617,12 @@ static int platform_match(struct device *dev, struct device_driver *drv) static int platform_legacy_suspend(struct device *dev, pm_message_t mesg) { + struct platform_driver *pdrv = to_platform_driver(dev->driver); + struct platform_device *pdev = to_platform_device(dev); int ret = 0; - if (dev->driver && dev->driver->suspend) - ret = dev->driver->suspend(dev, mesg); + if (dev->driver && pdrv->suspend) + ret = pdrv->suspend(pdev, mesg); return ret; } @@ -667,10 +653,12 @@ static int platform_legacy_resume_early(struct device *dev) static int platform_legacy_resume(struct device *dev) { + struct platform_driver *pdrv = to_platform_driver(dev->driver); + struct platform_device *pdev = to_platform_device(dev); int ret = 0; - if (dev->driver && dev->driver->resume) - ret = dev->driver->resume(dev); + if (dev->driver && pdrv->resume) + ret = pdrv->resume(pdev); return ret; } diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 3e4bc699bc0..fae72545898 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -315,13 +315,13 @@ static void pm_dev_err(struct device *dev, pm_message_t state, char *info, /*------------------------- Resume routines -------------------------*/ /** - * resume_device_noirq - Power on one device (early resume). + * device_resume_noirq - Power on one device (early resume). * @dev: Device. * @state: PM transition of the system being carried out. * * Must be called with interrupts disabled. */ -static int resume_device_noirq(struct device *dev, pm_message_t state) +static int device_resume_noirq(struct device *dev, pm_message_t state) { int error = 0; @@ -334,9 +334,6 @@ static int resume_device_noirq(struct device *dev, pm_message_t state) if (dev->bus->pm) { pm_dev_dbg(dev, state, "EARLY "); error = pm_noirq_op(dev, dev->bus->pm, state); - } else if (dev->bus->resume_early) { - pm_dev_dbg(dev, state, "legacy EARLY "); - error = dev->bus->resume_early(dev); } End: TRACE_RESUME(error); @@ -344,16 +341,16 @@ static int resume_device_noirq(struct device *dev, pm_message_t state) } /** - * dpm_power_up - Power on all regular (non-sysdev) devices. + * dpm_resume_noirq - Power on all regular (non-sysdev) devices. * @state: PM transition of the system being carried out. * - * Execute the appropriate "noirq resume" callback for all devices marked - * as DPM_OFF_IRQ. + * Call the "noirq" resume handlers for all devices marked as + * DPM_OFF_IRQ and enable device drivers to receive interrupts. * * Must be called under dpm_list_mtx. Device drivers should not receive * interrupts while it's being executed. */ -static void dpm_power_up(pm_message_t state) +void dpm_resume_noirq(pm_message_t state) { struct device *dev; @@ -363,33 +360,21 @@ static void dpm_power_up(pm_message_t state) int error; dev->power.status = DPM_OFF; - error = resume_device_noirq(dev, state); + error = device_resume_noirq(dev, state); if (error) pm_dev_err(dev, state, " early", error); } mutex_unlock(&dpm_list_mtx); -} - -/** - * device_power_up - Turn on all devices that need special attention. - * @state: PM transition of the system being carried out. - * - * Call the "early" resume handlers and enable device drivers to receive - * interrupts. - */ -void device_power_up(pm_message_t state) -{ - dpm_power_up(state); resume_device_irqs(); } -EXPORT_SYMBOL_GPL(device_power_up); +EXPORT_SYMBOL_GPL(dpm_resume_noirq); /** - * resume_device - Restore state for one device. + * device_resume - Restore state for one device. * @dev: Device. * @state: PM transition of the system being carried out. */ -static int resume_device(struct device *dev, pm_message_t state) +static int device_resume(struct device *dev, pm_message_t state) { int error = 0; @@ -414,9 +399,6 @@ static int resume_device(struct device *dev, pm_message_t state) if (dev->type->pm) { pm_dev_dbg(dev, state, "type "); error = pm_op(dev, dev->type->pm, state); - } else if (dev->type->resume) { - pm_dev_dbg(dev, state, "legacy type "); - error = dev->type->resume(dev); } if (error) goto End; @@ -462,7 +444,7 @@ static void dpm_resume(pm_message_t state) dev->power.status = DPM_RESUMING; mutex_unlock(&dpm_list_mtx); - error = resume_device(dev, state); + error = device_resume(dev, state); mutex_lock(&dpm_list_mtx); if (error) @@ -480,11 +462,11 @@ static void dpm_resume(pm_message_t state) } /** - * complete_device - Complete a PM transition for given device + * device_complete - Complete a PM transition for given device * @dev: Device. * @state: PM transition of the system being carried out. */ -static void complete_device(struct device *dev, pm_message_t state) +static void device_complete(struct device *dev, pm_message_t state) { down(&dev->sem); |