diff options
Diffstat (limited to 'drivers/base/platform.c')
| -rw-r--r-- | drivers/base/platform.c | 98 |
1 files changed, 47 insertions, 51 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 456594bd97bc..4fa954b07ac4 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -10,6 +10,7 @@ * information. */ +#include <linux/string.h> #include <linux/platform_device.h> #include <linux/module.h> #include <linux/init.h> @@ -17,6 +18,7 @@ #include <linux/bootmem.h> #include <linux/err.h> #include <linux/slab.h> +#include <linux/pm_runtime.h> #include "base.h" @@ -212,14 +214,13 @@ EXPORT_SYMBOL_GPL(platform_device_add_resources); int platform_device_add_data(struct platform_device *pdev, const void *data, size_t size) { - void *d; + void *d = kmemdup(data, size, GFP_KERNEL); - d = kmalloc(size, GFP_KERNEL); if (d) { - memcpy(d, data, size); pdev->dev.platform_data = d; + return 0; } - return d ? 0 : -ENOMEM; + return -ENOMEM; } EXPORT_SYMBOL_GPL(platform_device_add_data); @@ -520,11 +521,15 @@ int __init_or_module platform_driver_probe(struct platform_driver *drv, { int retval, code; + /* make sure driver won't have bind/unbind attributes */ + drv->driver.suppress_bind_attrs = true; + /* temporary section violation during probe() */ drv->probe = probe; retval = code = platform_driver_register(drv); - /* Fixup that section violation, being paranoid about code scanning + /* + * Fixup that section violation, being paranoid about code scanning * the list of drivers in order to probe new devices. Check to see * if the probe was successful, and make sure any forced probes of * new devices fail. @@ -625,30 +630,6 @@ static int platform_legacy_suspend(struct device *dev, pm_message_t mesg) return ret; } -static int platform_legacy_suspend_late(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 && pdrv->suspend_late) - ret = pdrv->suspend_late(pdev, mesg); - - return ret; -} - -static int platform_legacy_resume_early(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 && pdrv->resume_early) - ret = pdrv->resume_early(pdev); - - return ret; -} - static int platform_legacy_resume(struct device *dev) { struct platform_driver *pdrv = to_platform_driver(dev->driver); @@ -680,6 +661,13 @@ static void platform_pm_complete(struct device *dev) drv->pm->complete(dev); } +#else /* !CONFIG_PM_SLEEP */ + +#define platform_pm_prepare NULL +#define platform_pm_complete NULL + +#endif /* !CONFIG_PM_SLEEP */ + #ifdef CONFIG_SUSPEND static int platform_pm_suspend(struct device *dev) @@ -711,8 +699,6 @@ static int platform_pm_suspend_noirq(struct device *dev) if (drv->pm) { if (drv->pm->suspend_noirq) ret = drv->pm->suspend_noirq(dev); - } else { - ret = platform_legacy_suspend_late(dev, PMSG_SUSPEND); } return ret; @@ -747,8 +733,6 @@ static int platform_pm_resume_noirq(struct device *dev) if (drv->pm) { if (drv->pm->resume_noirq) ret = drv->pm->resume_noirq(dev); - } else { - ret = platform_legacy_resume_early(dev); } return ret; @@ -794,8 +778,6 @@ static int platform_pm_freeze_noirq(struct device *dev) if (drv->pm) { if (drv->pm->freeze_noirq) ret = drv->pm->freeze_noirq(dev); - } else { - ret = platform_legacy_suspend_late(dev, PMSG_FREEZE); } return ret; @@ -830,8 +812,6 @@ static int platform_pm_thaw_noirq(struct device *dev) if (drv->pm) { if (drv->pm->thaw_noirq) ret = drv->pm->thaw_noirq(dev); - } else { - ret = platform_legacy_resume_early(dev); } return ret; @@ -866,8 +846,6 @@ static int platform_pm_poweroff_noirq(struct device *dev) if (drv->pm) { if (drv->pm->poweroff_noirq) ret = drv->pm->poweroff_noirq(dev); - } else { - ret = platform_legacy_suspend_late(dev, PMSG_HIBERNATE); } return ret; @@ -902,8 +880,6 @@ static int platform_pm_restore_noirq(struct device *dev) if (drv->pm) { if (drv->pm->restore_noirq) ret = drv->pm->restore_noirq(dev); - } else { - ret = platform_legacy_resume_early(dev); } return ret; @@ -922,7 +898,32 @@ static int platform_pm_restore_noirq(struct device *dev) #endif /* !CONFIG_HIBERNATION */ -static struct dev_pm_ops platform_dev_pm_ops = { +#ifdef CONFIG_PM_RUNTIME + +int __weak platform_pm_runtime_suspend(struct device *dev) +{ + return -ENOSYS; +}; + +int __weak platform_pm_runtime_resume(struct device *dev) +{ + return -ENOSYS; +}; + +int __weak platform_pm_runtime_idle(struct device *dev) +{ + return -ENOSYS; +}; + +#else /* !CONFIG_PM_RUNTIME */ + +#define platform_pm_runtime_suspend NULL +#define platform_pm_runtime_resume NULL +#define platform_pm_runtime_idle NULL + +#endif /* !CONFIG_PM_RUNTIME */ + +static const struct dev_pm_ops platform_dev_pm_ops = { .prepare = platform_pm_prepare, .complete = platform_pm_complete, .suspend = platform_pm_suspend, @@ -937,22 +938,17 @@ static struct dev_pm_ops platform_dev_pm_ops = { .thaw_noirq = platform_pm_thaw_noirq, .poweroff_noirq = platform_pm_poweroff_noirq, .restore_noirq = platform_pm_restore_noirq, + .runtime_suspend = platform_pm_runtime_suspend, + .runtime_resume = platform_pm_runtime_resume, + .runtime_idle = platform_pm_runtime_idle, }; -#define PLATFORM_PM_OPS_PTR (&platform_dev_pm_ops) - -#else /* !CONFIG_PM_SLEEP */ - -#define PLATFORM_PM_OPS_PTR NULL - -#endif /* !CONFIG_PM_SLEEP */ - struct bus_type platform_bus_type = { .name = "platform", .dev_attrs = platform_dev_attrs, .match = platform_match, .uevent = platform_uevent, - .pm = PLATFORM_PM_OPS_PTR, + .pm = &platform_dev_pm_ops, }; EXPORT_SYMBOL_GPL(platform_bus_type); |