diff options
Diffstat (limited to 'drivers/base/platform.c')
-rw-r--r-- | drivers/base/platform.c | 110 |
1 files changed, 29 insertions, 81 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index f699fab..c6c933f 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -192,13 +192,13 @@ int platform_device_add_resources(struct platform_device *pdev, { struct resource *r; - r = kmalloc(sizeof(struct resource) * num, GFP_KERNEL); + r = kmemdup(res, sizeof(struct resource) * num, GFP_KERNEL); if (r) { - memcpy(r, res, sizeof(struct resource) * num); pdev->resource = r; pdev->num_resources = num; + return 0; } - return r ? 0 : -ENOMEM; + return -ENOMEM; } EXPORT_SYMBOL_GPL(platform_device_add_resources); @@ -345,108 +345,56 @@ void platform_device_unregister(struct platform_device *pdev) EXPORT_SYMBOL_GPL(platform_device_unregister); /** - * platform_device_register_simple - add a platform-level device and its resources - * @name: base name of the device we're adding - * @id: instance id - * @res: set of resources that needs to be allocated for the device - * @num: number of resources - * - * This function creates a simple platform device that requires minimal - * resource and memory management. Canned release function freeing memory - * allocated for the device allows drivers using such devices to be - * unloaded without waiting for the last reference to the device to be - * dropped. - * - * This interface is primarily intended for use with legacy drivers which - * probe hardware directly. Because such drivers create sysfs device nodes - * themselves, rather than letting system infrastructure handle such device - * enumeration tasks, they don't fully conform to the Linux driver model. - * In particular, when such drivers are built as modules, they can't be - * "hotplugged". + * platform_device_register_resndata - add a platform-level device with + * resources and platform-specific data * - * Returns &struct platform_device pointer on success, or ERR_PTR() on error. - */ -struct platform_device *platform_device_register_simple(const char *name, - int id, - const struct resource *res, - unsigned int num) -{ - struct platform_device *pdev; - int retval; - - pdev = platform_device_alloc(name, id); - if (!pdev) { - retval = -ENOMEM; - goto error; - } - - if (num) { - retval = platform_device_add_resources(pdev, res, num); - if (retval) - goto error; - } - - retval = platform_device_add(pdev); - if (retval) - goto error; - - return pdev; - -error: - platform_device_put(pdev); - return ERR_PTR(retval); -} -EXPORT_SYMBOL_GPL(platform_device_register_simple); - -/** - * platform_device_register_data - add a platform-level device with platform-specific data * @parent: parent device for the device we're adding * @name: base name of the device we're adding * @id: instance id + * @res: set of resources that needs to be allocated for the device + * @num: number of resources * @data: platform specific data for this platform device * @size: size of platform specific data * - * This function creates a simple platform device that requires minimal - * resource and memory management. Canned release function freeing memory - * allocated for the device allows drivers using such devices to be - * unloaded without waiting for the last reference to the device to be - * dropped. - * * Returns &struct platform_device pointer on success, or ERR_PTR() on error. */ -struct platform_device *platform_device_register_data( +struct platform_device *__init_or_module platform_device_register_resndata( struct device *parent, const char *name, int id, + const struct resource *res, unsigned int num, const void *data, size_t size) { + int ret = -ENOMEM; struct platform_device *pdev; - int retval; pdev = platform_device_alloc(name, id); - if (!pdev) { - retval = -ENOMEM; - goto error; - } + if (!pdev) + goto err; pdev->dev.parent = parent; - if (size) { - retval = platform_device_add_data(pdev, data, size); - if (retval) - goto error; + if (res) { + ret = platform_device_add_resources(pdev, res, num); + if (ret) + goto err; } - retval = platform_device_add(pdev); - if (retval) - goto error; + if (data) { + ret = platform_device_add_data(pdev, data, size); + if (ret) + goto err; + } - return pdev; + ret = platform_device_add(pdev); + if (ret) { +err: + platform_device_put(pdev); + return ERR_PTR(ret); + } -error: - platform_device_put(pdev); - return ERR_PTR(retval); + return pdev; } -EXPORT_SYMBOL_GPL(platform_device_register_data); +EXPORT_SYMBOL_GPL(platform_device_register_resndata); static int platform_drv_probe(struct device *_dev) { |