diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/core.c | 3 | ||||
| -rw-r--r-- | drivers/base/memory.c | 3 | ||||
| -rw-r--r-- | drivers/base/platform.c | 46 |
3 files changed, 45 insertions, 7 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index 2db62d98e395..7bd9cd366d41 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -9,6 +9,7 @@ */ #include <linux/acpi.h> +#include <linux/cpufreq.h> #include <linux/device.h> #include <linux/err.h> #include <linux/fwnode.h> @@ -3179,6 +3180,8 @@ void device_shutdown(void) wait_for_device_probe(); device_block_probing(); + cpufreq_suspend(); + spin_lock(&devices_kset->list_lock); /* * Walk the devices list backward, shutting down each in turn. diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 6bea4f3f8040..55907c27075b 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -540,6 +540,9 @@ static ssize_t soft_offline_page_store(struct device *dev, pfn >>= PAGE_SHIFT; if (!pfn_valid(pfn)) return -ENXIO; + /* Only online pages can be soft-offlined (esp., not ZONE_DEVICE). */ + if (!pfn_to_online_page(pfn)) + return -EIO; ret = soft_offline_page(pfn_to_page(pfn), 0); return ret == 0 ? count : ret; } diff --git a/drivers/base/platform.c b/drivers/base/platform.c index b6c6c7d97d5b..b230beb6ccb4 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -241,12 +241,8 @@ struct resource *platform_get_resource_byname(struct platform_device *dev, } EXPORT_SYMBOL_GPL(platform_get_resource_byname); -/** - * platform_get_irq_byname - get an IRQ for a device by name - * @dev: platform device - * @name: IRQ name - */ -int platform_get_irq_byname(struct platform_device *dev, const char *name) +static int __platform_get_irq_byname(struct platform_device *dev, + const char *name) { struct resource *r; @@ -262,12 +258,48 @@ int platform_get_irq_byname(struct platform_device *dev, const char *name) if (r) return r->start; - dev_err(&dev->dev, "IRQ %s not found\n", name); return -ENXIO; } + +/** + * platform_get_irq_byname - get an IRQ for a device by name + * @dev: platform device + * @name: IRQ name + * + * Get an IRQ like platform_get_irq(), but then by name rather then by index. + * + * Return: IRQ number on success, negative error number on failure. + */ +int platform_get_irq_byname(struct platform_device *dev, const char *name) +{ + int ret; + + ret = __platform_get_irq_byname(dev, name); + if (ret < 0 && ret != -EPROBE_DEFER) + dev_err(&dev->dev, "IRQ %s not found\n", name); + + return ret; +} EXPORT_SYMBOL_GPL(platform_get_irq_byname); /** + * platform_get_irq_byname_optional - get an optional IRQ for a device by name + * @dev: platform device + * @name: IRQ name + * + * Get an optional IRQ by name like platform_get_irq_byname(). Except that it + * does not print an error message if an IRQ can not be obtained. + * + * Return: IRQ number on success, negative error number on failure. + */ +int platform_get_irq_byname_optional(struct platform_device *dev, + const char *name) +{ + return __platform_get_irq_byname(dev, name); +} +EXPORT_SYMBOL_GPL(platform_get_irq_byname_optional); + +/** * platform_add_devices - add a numbers of platform devices * @devs: array of platform devices to add * @num: number of platform devices in array |