diff options
Diffstat (limited to 'drivers/base/firmware_class.c')
| -rw-r--r-- | drivers/base/firmware_class.c | 133 |
1 files changed, 64 insertions, 69 deletions
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index 5d6c011183f5..4bad2870c485 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -16,10 +16,13 @@ #include <linux/interrupt.h> #include <linux/bitops.h> #include <linux/mutex.h> +#include <linux/kthread.h> #include <linux/firmware.h> #include "base.h" +#define to_dev(obj) container_of(obj, struct device, kobj) + MODULE_AUTHOR("Manuel Estrada Sainz <ranty@debian.org>"); MODULE_DESCRIPTION("Multi purpose firmware loading support"); MODULE_LICENSE("GPL"); @@ -85,12 +88,12 @@ firmware_timeout_store(struct class *class, const char *buf, size_t count) static CLASS_ATTR(timeout, 0644, firmware_timeout_show, firmware_timeout_store); -static void fw_class_dev_release(struct class_device *class_dev); +static void fw_dev_release(struct device *dev); -static int firmware_class_uevent(struct class_device *class_dev, char **envp, - int num_envp, char *buffer, int buffer_size) +static int firmware_uevent(struct device *dev, char **envp, int num_envp, + char *buffer, int buffer_size) { - struct firmware_priv *fw_priv = class_get_devdata(class_dev); + struct firmware_priv *fw_priv = dev_get_drvdata(dev); int i = 0, len = 0; if (!test_bit(FW_STATUS_READY, &fw_priv->status)) @@ -109,21 +112,21 @@ static int firmware_class_uevent(struct class_device *class_dev, char **envp, static struct class firmware_class = { .name = "firmware", - .uevent = firmware_class_uevent, - .release = fw_class_dev_release, + .dev_uevent = firmware_uevent, + .dev_release = fw_dev_release, }; -static ssize_t -firmware_loading_show(struct class_device *class_dev, char *buf) +static ssize_t firmware_loading_show(struct device *dev, + struct device_attribute *attr, char *buf) { - struct firmware_priv *fw_priv = class_get_devdata(class_dev); + struct firmware_priv *fw_priv = dev_get_drvdata(dev); int loading = test_bit(FW_STATUS_LOADING, &fw_priv->status); return sprintf(buf, "%d\n", loading); } /** * firmware_loading_store - set value in the 'loading' control file - * @class_dev: class_device pointer + * @dev: device pointer * @buf: buffer to scan for loading control value * @count: number of bytes in @buf * @@ -133,11 +136,11 @@ firmware_loading_show(struct class_device *class_dev, char *buf) * 0: Conclude the load and hand the data to the driver code. * -1: Conclude the load with an error and discard any written data. **/ -static ssize_t -firmware_loading_store(struct class_device *class_dev, - const char *buf, size_t count) +static ssize_t firmware_loading_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) { - struct firmware_priv *fw_priv = class_get_devdata(class_dev); + struct firmware_priv *fw_priv = dev_get_drvdata(dev); int loading = simple_strtol(buf, NULL, 10); switch (loading) { @@ -173,15 +176,14 @@ firmware_loading_store(struct class_device *class_dev, return count; } -static CLASS_DEVICE_ATTR(loading, 0644, - firmware_loading_show, firmware_loading_store); +static DEVICE_ATTR(loading, 0644, firmware_loading_show, firmware_loading_store); static ssize_t firmware_data_read(struct kobject *kobj, char *buffer, loff_t offset, size_t count) { - struct class_device *class_dev = to_class_dev(kobj); - struct firmware_priv *fw_priv = class_get_devdata(class_dev); + struct device *dev = to_dev(kobj); + struct firmware_priv *fw_priv = dev_get_drvdata(dev); struct firmware *fw; ssize_t ret_count = count; @@ -233,7 +235,7 @@ fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size) /** * firmware_data_write - write method for firmware - * @kobj: kobject for the class_device + * @kobj: kobject for the device * @buffer: buffer being written * @offset: buffer offset for write in total data store area * @count: buffer size @@ -245,8 +247,8 @@ static ssize_t firmware_data_write(struct kobject *kobj, char *buffer, loff_t offset, size_t count) { - struct class_device *class_dev = to_class_dev(kobj); - struct firmware_priv *fw_priv = class_get_devdata(class_dev); + struct device *dev = to_dev(kobj); + struct firmware_priv *fw_priv = dev_get_drvdata(dev); struct firmware *fw; ssize_t retval; @@ -279,13 +281,12 @@ static struct bin_attribute firmware_attr_data_tmpl = { .write = firmware_data_write, }; -static void -fw_class_dev_release(struct class_device *class_dev) +static void fw_dev_release(struct device *dev) { - struct firmware_priv *fw_priv = class_get_devdata(class_dev); + struct firmware_priv *fw_priv = dev_get_drvdata(dev); kfree(fw_priv); - kfree(class_dev); + kfree(dev); module_put(THIS_MODULE); } @@ -297,26 +298,23 @@ firmware_class_timeout(u_long data) fw_load_abort(fw_priv); } -static inline void -fw_setup_class_device_id(struct class_device *class_dev, struct device *dev) +static inline void fw_setup_device_id(struct device *f_dev, struct device *dev) { /* XXX warning we should watch out for name collisions */ - strlcpy(class_dev->class_id, dev->bus_id, BUS_ID_SIZE); + strlcpy(f_dev->bus_id, dev->bus_id, BUS_ID_SIZE); } -static int -fw_register_class_device(struct class_device **class_dev_p, - const char *fw_name, struct device *device) +static int fw_register_device(struct device **dev_p, const char *fw_name, + struct device *device) { int retval; struct firmware_priv *fw_priv = kzalloc(sizeof(*fw_priv), GFP_KERNEL); - struct class_device *class_dev = kzalloc(sizeof(*class_dev), - GFP_KERNEL); + struct device *f_dev = kzalloc(sizeof(*f_dev), GFP_KERNEL); - *class_dev_p = NULL; + *dev_p = NULL; - if (!fw_priv || !class_dev) { + if (!fw_priv || !f_dev) { printk(KERN_ERR "%s: kmalloc failed\n", __FUNCTION__); retval = -ENOMEM; goto error_kfree; @@ -330,55 +328,54 @@ fw_register_class_device(struct class_device **class_dev_p, fw_priv->timeout.data = (u_long) fw_priv; init_timer(&fw_priv->timeout); - fw_setup_class_device_id(class_dev, device); - class_dev->dev = device; - class_dev->class = &firmware_class; - class_set_devdata(class_dev, fw_priv); - retval = class_device_register(class_dev); + fw_setup_device_id(f_dev, device); + f_dev->parent = device; + f_dev->class = &firmware_class; + dev_set_drvdata(f_dev, fw_priv); + retval = device_register(f_dev); if (retval) { - printk(KERN_ERR "%s: class_device_register failed\n", + printk(KERN_ERR "%s: device_register failed\n", __FUNCTION__); goto error_kfree; } - *class_dev_p = class_dev; + *dev_p = f_dev; return 0; error_kfree: kfree(fw_priv); - kfree(class_dev); + kfree(f_dev); return retval; } -static int -fw_setup_class_device(struct firmware *fw, struct class_device **class_dev_p, - const char *fw_name, struct device *device, int uevent) +static int fw_setup_device(struct firmware *fw, struct device **dev_p, + const char *fw_name, struct device *device, + int uevent) { - struct class_device *class_dev; + struct device *f_dev; struct firmware_priv *fw_priv; int retval; - *class_dev_p = NULL; - retval = fw_register_class_device(&class_dev, fw_name, device); + *dev_p = NULL; + retval = fw_register_device(&f_dev, fw_name, device); if (retval) goto out; /* Need to pin this module until class device is destroyed */ __module_get(THIS_MODULE); - fw_priv = class_get_devdata(class_dev); + fw_priv = dev_get_drvdata(f_dev); fw_priv->fw = fw; - retval = sysfs_create_bin_file(&class_dev->kobj, &fw_priv->attr_data); + retval = sysfs_create_bin_file(&f_dev->kobj, &fw_priv->attr_data); if (retval) { printk(KERN_ERR "%s: sysfs_create_bin_file failed\n", __FUNCTION__); goto error_unreg; } - retval = class_device_create_file(class_dev, - &class_device_attr_loading); + retval = device_create_file(f_dev, &dev_attr_loading); if (retval) { - printk(KERN_ERR "%s: class_device_create_file failed\n", + printk(KERN_ERR "%s: device_create_file failed\n", __FUNCTION__); goto error_unreg; } @@ -387,11 +384,11 @@ fw_setup_class_device(struct firmware *fw, struct class_device **class_dev_p, set_bit(FW_STATUS_READY, &fw_priv->status); else set_bit(FW_STATUS_READY_NOHOTPLUG, &fw_priv->status); - *class_dev_p = class_dev; + *dev_p = f_dev; goto out; error_unreg: - class_device_unregister(class_dev); + device_unregister(f_dev); out: return retval; } @@ -400,7 +397,7 @@ static int _request_firmware(const struct firmware **firmware_p, const char *name, struct device *device, int uevent) { - struct class_device *class_dev; + struct device *f_dev; struct firmware_priv *fw_priv; struct firmware *firmware; int retval; @@ -416,12 +413,11 @@ _request_firmware(const struct firmware **firmware_p, const char *name, goto out; } - retval = fw_setup_class_device(firmware, &class_dev, name, device, - uevent); + retval = fw_setup_device(firmware, &f_dev, name, device, uevent); if (retval) goto error_kfree_fw; - fw_priv = class_get_devdata(class_dev); + fw_priv = dev_get_drvdata(f_dev); if (uevent) { if (loading_timeout > 0) { @@ -429,7 +425,7 @@ _request_firmware(const struct firmware **firmware_p, const char *name, add_timer(&fw_priv->timeout); } - kobject_uevent(&class_dev->kobj, KOBJ_ADD); + kobject_uevent(&f_dev->kobj, KOBJ_ADD); wait_for_completion(&fw_priv->completion); set_bit(FW_STATUS_DONE, &fw_priv->status); del_timer_sync(&fw_priv->timeout); @@ -444,7 +440,7 @@ _request_firmware(const struct firmware **firmware_p, const char *name, } fw_priv->fw = NULL; mutex_unlock(&fw_lock); - class_device_unregister(class_dev); + device_unregister(f_dev); goto out; error_kfree_fw: @@ -511,7 +507,6 @@ request_firmware_work_func(void *arg) WARN_ON(1); return 0; } - daemonize("%s/%s", "firmware", fw_work->name); ret = _request_firmware(&fw, fw_work->name, fw_work->device, fw_work->uevent); if (ret < 0) @@ -546,9 +541,9 @@ request_firmware_nowait( const char *name, struct device *device, void *context, void (*cont)(const struct firmware *fw, void *context)) { + struct task_struct *task; struct firmware_work *fw_work = kmalloc(sizeof (struct firmware_work), GFP_ATOMIC); - int ret; if (!fw_work) return -ENOMEM; @@ -566,14 +561,14 @@ request_firmware_nowait( .uevent = uevent, }; - ret = kernel_thread(request_firmware_work_func, fw_work, - CLONE_FS | CLONE_FILES); + task = kthread_run(request_firmware_work_func, fw_work, + "firmware/%s", name); - if (ret < 0) { + if (IS_ERR(task)) { fw_work->cont(NULL, fw_work->context); module_put(fw_work->module); kfree(fw_work); - return ret; + return PTR_ERR(task); } return 0; } @@ -602,7 +597,7 @@ firmware_class_exit(void) class_unregister(&firmware_class); } -module_init(firmware_class_init); +fs_initcall(firmware_class_init); module_exit(firmware_class_exit); EXPORT_SYMBOL(release_firmware); |