diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/bus.c | 2 | ||||
| -rw-r--r-- | drivers/base/core.c | 2 | ||||
| -rw-r--r-- | drivers/base/dd.c | 4 | ||||
| -rw-r--r-- | drivers/base/dma-coherent.c | 2 | ||||
| -rw-r--r-- | drivers/base/firmware_class.c | 262 | ||||
| -rw-r--r-- | drivers/base/platform.c | 110 |
6 files changed, 160 insertions, 222 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 12eec3f633b1..eb1b7fa20dce 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -945,8 +945,8 @@ bus_devices_fail: bus_remove_file(bus, &bus_attr_uevent); bus_uevent_fail: kset_unregister(&bus->p->subsys); - kfree(bus->p); out: + kfree(bus->p); bus->p = NULL; return retval; } diff --git a/drivers/base/core.c b/drivers/base/core.c index f8e72724dd4b..d1b2c9adc271 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -1599,7 +1599,7 @@ EXPORT_SYMBOL_GPL(device_destroy); * on the same device to ensure that new_name is valid and * won't conflict with other devices. */ -int device_rename(struct device *dev, char *new_name) +int device_rename(struct device *dev, const char *new_name) { char *old_class_name = NULL; char *new_class_name = NULL; diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 503c2620bbcc..da57ee9d63fe 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -51,6 +51,10 @@ static int driver_sysfs_add(struct device *dev) { int ret; + if (dev->bus) + blocking_notifier_call_chain(&dev->bus->p->bus_notifier, + BUS_NOTIFY_BIND_DRIVER, dev); + ret = sysfs_create_link(&dev->driver->p->kobj, &dev->kobj, kobject_name(&dev->kobj)); if (ret == 0) { diff --git a/drivers/base/dma-coherent.c b/drivers/base/dma-coherent.c index d4d8ce53886a..f369e2795985 100644 --- a/drivers/base/dma-coherent.c +++ b/drivers/base/dma-coherent.c @@ -8,7 +8,7 @@ struct dma_coherent_mem { void *virt_base; - u32 device_base; + dma_addr_t device_base; int size; int flags; unsigned long *bitmap; diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index 3f093b0dd217..c8a44f5e0584 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -87,29 +87,32 @@ static DEFINE_MUTEX(fw_lock); struct firmware_priv { struct completion completion; - struct bin_attribute attr_data; struct firmware *fw; unsigned long status; struct page **pages; int nr_pages; int page_array_size; struct timer_list timeout; + struct device dev; bool nowait; char fw_id[]; }; -static void -fw_load_abort(struct firmware_priv *fw_priv) +static struct firmware_priv *to_firmware_priv(struct device *dev) +{ + return container_of(dev, struct firmware_priv, dev); +} + +static void fw_load_abort(struct firmware_priv *fw_priv) { set_bit(FW_STATUS_ABORT, &fw_priv->status); wmb(); complete(&fw_priv->completion); } -static ssize_t -firmware_timeout_show(struct class *class, - struct class_attribute *attr, - char *buf) +static ssize_t firmware_timeout_show(struct class *class, + struct class_attribute *attr, + char *buf) { return sprintf(buf, "%d\n", loading_timeout); } @@ -127,14 +130,14 @@ firmware_timeout_show(struct class *class, * * Note: zero means 'wait forever'. **/ -static ssize_t -firmware_timeout_store(struct class *class, - struct class_attribute *attr, - const char *buf, size_t count) +static ssize_t firmware_timeout_store(struct class *class, + struct class_attribute *attr, + const char *buf, size_t count) { loading_timeout = simple_strtol(buf, NULL, 10); if (loading_timeout < 0) loading_timeout = 0; + return count; } @@ -146,21 +149,20 @@ static struct class_attribute firmware_class_attrs[] = { static void fw_dev_release(struct device *dev) { - struct firmware_priv *fw_priv = dev_get_drvdata(dev); + struct firmware_priv *fw_priv = to_firmware_priv(dev); int i; for (i = 0; i < fw_priv->nr_pages; i++) __free_page(fw_priv->pages[i]); kfree(fw_priv->pages); kfree(fw_priv); - kfree(dev); module_put(THIS_MODULE); } static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env) { - struct firmware_priv *fw_priv = dev_get_drvdata(dev); + struct firmware_priv *fw_priv = to_firmware_priv(dev); if (add_uevent_var(env, "FIRMWARE=%s", fw_priv->fw_id)) return -ENOMEM; @@ -182,8 +184,9 @@ static struct class firmware_class = { static ssize_t firmware_loading_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct firmware_priv *fw_priv = dev_get_drvdata(dev); + struct firmware_priv *fw_priv = to_firmware_priv(dev); int loading = test_bit(FW_STATUS_LOADING, &fw_priv->status); + return sprintf(buf, "%d\n", loading); } @@ -219,7 +222,7 @@ static ssize_t firmware_loading_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct firmware_priv *fw_priv = dev_get_drvdata(dev); + struct firmware_priv *fw_priv = to_firmware_priv(dev); int loading = simple_strtol(buf, NULL, 10); int i; @@ -277,13 +280,12 @@ static ssize_t firmware_loading_store(struct device *dev, static DEVICE_ATTR(loading, 0644, firmware_loading_show, firmware_loading_store); -static ssize_t -firmware_data_read(struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, char *buffer, loff_t offset, - size_t count) +static ssize_t firmware_data_read(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buffer, loff_t offset, size_t count) { struct device *dev = to_dev(kobj); - struct firmware_priv *fw_priv = dev_get_drvdata(dev); + struct firmware_priv *fw_priv = to_firmware_priv(dev); struct firmware *fw; ssize_t ret_count; @@ -322,8 +324,7 @@ out: return ret_count; } -static int -fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size) +static int fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size) { int pages_needed = ALIGN(min_size, PAGE_SIZE) >> PAGE_SHIFT; @@ -373,13 +374,12 @@ fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size) * Data written to the 'data' attribute will be later handed to * the driver as a firmware image. **/ -static ssize_t -firmware_data_write(struct file* filp, struct kobject *kobj, - struct bin_attribute *bin_attr, char *buffer, - loff_t offset, size_t count) +static ssize_t firmware_data_write(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buffer, loff_t offset, size_t count) { struct device *dev = to_dev(kobj); - struct firmware_priv *fw_priv = dev_get_drvdata(dev); + struct firmware_priv *fw_priv = to_firmware_priv(dev); struct firmware *fw; ssize_t retval; @@ -420,116 +420,103 @@ out: return retval; } -static struct bin_attribute firmware_attr_data_tmpl = { - .attr = {.name = "data", .mode = 0644}, +static struct bin_attribute firmware_attr_data = { + .attr = { .name = "data", .mode = 0644 }, .size = 0, .read = firmware_data_read, .write = firmware_data_write, }; -static void -firmware_class_timeout(u_long data) +static void firmware_class_timeout(u_long data) { struct firmware_priv *fw_priv = (struct firmware_priv *) data; + fw_load_abort(fw_priv); } -static int fw_register_device(struct device **dev_p, const char *fw_name, - struct device *device) +static struct firmware_priv * +fw_create_instance(struct firmware *firmware, const char *fw_name, + struct device *device, bool uevent, bool nowait) { - int retval; - struct firmware_priv *fw_priv = - kzalloc(sizeof(*fw_priv) + strlen(fw_name) + 1 , GFP_KERNEL); - struct device *f_dev = kzalloc(sizeof(*f_dev), GFP_KERNEL); - - *dev_p = NULL; + struct firmware_priv *fw_priv; + struct device *f_dev; + int error; - if (!fw_priv || !f_dev) { + fw_priv = kzalloc(sizeof(*fw_priv) + strlen(fw_name) + 1 , GFP_KERNEL); + if (!fw_priv) { dev_err(device, "%s: kmalloc failed\n", __func__); - retval = -ENOMEM; - goto error_kfree; + error = -ENOMEM; + goto err_out; } + fw_priv->fw = firmware; + fw_priv->nowait = nowait; strcpy(fw_priv->fw_id, fw_name); init_completion(&fw_priv->completion); - fw_priv->attr_data = firmware_attr_data_tmpl; - fw_priv->timeout.function = firmware_class_timeout; - fw_priv->timeout.data = (u_long) fw_priv; - init_timer(&fw_priv->timeout); + setup_timer(&fw_priv->timeout, + firmware_class_timeout, (u_long) fw_priv); + f_dev = &fw_priv->dev; + + device_initialize(f_dev); dev_set_name(f_dev, "%s", dev_name(device)); f_dev->parent = device; f_dev->class = &firmware_class; - dev_set_drvdata(f_dev, fw_priv); - dev_set_uevent_suppress(f_dev, 1); - retval = device_register(f_dev); - if (retval) { - dev_err(device, "%s: device_register failed\n", __func__); - put_device(f_dev); - return retval; - } - *dev_p = f_dev; - return 0; - -error_kfree: - kfree(f_dev); - kfree(fw_priv); - return retval; -} -static int fw_setup_device(struct firmware *fw, struct device **dev_p, - const char *fw_name, struct device *device, - int uevent, bool nowait) -{ - struct device *f_dev; - struct firmware_priv *fw_priv; - int retval; - - *dev_p = NULL; - retval = fw_register_device(&f_dev, fw_name, device); - if (retval) - goto out; + dev_set_uevent_suppress(f_dev, true); /* Need to pin this module until class device is destroyed */ __module_get(THIS_MODULE); - fw_priv = dev_get_drvdata(f_dev); - - fw_priv->nowait = nowait; + error = device_add(f_dev); + if (error) { + dev_err(device, "%s: device_register failed\n", __func__); + goto err_put_dev; + } - fw_priv->fw = fw; - sysfs_bin_attr_init(&fw_priv->attr_data); - retval = sysfs_create_bin_file(&f_dev->kobj, &fw_priv->attr_data); - if (retval) { + error = device_create_bin_file(f_dev, &firmware_attr_data); + if (error) { dev_err(device, "%s: sysfs_create_bin_file failed\n", __func__); - goto error_unreg; + goto err_del_dev; } - retval = device_create_file(f_dev, &dev_attr_loading); - if (retval) { + error = device_create_file(f_dev, &dev_attr_loading); + if (error) { dev_err(device, "%s: device_create_file failed\n", __func__); - goto error_unreg; + goto err_del_bin_attr; } if (uevent) - dev_set_uevent_suppress(f_dev, 0); - *dev_p = f_dev; - goto out; + dev_set_uevent_suppress(f_dev, false); + + return fw_priv; + +err_del_bin_attr: + device_remove_bin_file(f_dev, &firmware_attr_data); +err_del_dev: + device_del(f_dev); +err_put_dev: + put_device(f_dev); +err_out: + return ERR_PTR(error); +} + +static void fw_destroy_instance(struct firmware_priv *fw_priv) +{ + struct device *f_dev = &fw_priv->dev; -error_unreg: + device_remove_file(f_dev, &dev_attr_loading); + device_remove_bin_file(f_dev, &firmware_attr_data); device_unregister(f_dev); -out: - return retval; } -static int -_request_firmware(const struct firmware **firmware_p, const char *name, - struct device *device, int uevent, bool nowait) +static int _request_firmware(const struct firmware **firmware_p, + const char *name, struct device *device, + bool uevent, bool nowait) { - struct device *f_dev; struct firmware_priv *fw_priv; struct firmware *firmware; - int retval; + int retval = 0; if (!firmware_p) return -EINVAL; @@ -550,41 +537,40 @@ _request_firmware(const struct firmware **firmware_p, const char *name, if (uevent) dev_dbg(device, "firmware: requesting %s\n", name); - retval = fw_setup_device(firmware, &f_dev, name, device, - uevent, nowait); - if (retval) - goto error_kfree_fw; - - fw_priv = dev_get_drvdata(f_dev); + fw_priv = fw_create_instance(firmware, name, device, uevent, nowait); + if (IS_ERR(fw_priv)) { + retval = PTR_ERR(fw_priv); + goto out; + } if (uevent) { - if (loading_timeout > 0) { - fw_priv->timeout.expires = jiffies + loading_timeout * HZ; - add_timer(&fw_priv->timeout); - } + if (loading_timeout > 0) + mod_timer(&fw_priv->timeout, + round_jiffies_up(jiffies + + loading_timeout * HZ)); + + kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD); + } + + wait_for_completion(&fw_priv->completion); - 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); - } else - wait_for_completion(&fw_priv->completion); + set_bit(FW_STATUS_DONE, &fw_priv->status); + del_timer_sync(&fw_priv->timeout); mutex_lock(&fw_lock); - if (!fw_priv->fw->size || test_bit(FW_STATUS_ABORT, &fw_priv->status)) { + if (!fw_priv->fw->size || test_bit(FW_STATUS_ABORT, &fw_priv->status)) retval = -ENOENT; - release_firmware(fw_priv->fw); - *firmware_p = NULL; - } fw_priv->fw = NULL; mutex_unlock(&fw_lock); - device_unregister(f_dev); - goto out; -error_kfree_fw: - kfree(firmware); - *firmware_p = NULL; + fw_destroy_instance(fw_priv); + out: + if (retval) { + release_firmware(firmware); + firmware_p = NULL; + } + return retval; } @@ -635,23 +621,24 @@ struct firmware_work { int uevent; }; -static int -request_firmware_work_func(void *arg) +static int request_firmware_work_func(void *arg) { struct firmware_work *fw_work = arg; const struct firmware *fw; int ret; + if (!arg) { WARN_ON(1); return 0; } - ret = _request_firmware(&fw, fw_work->name, fw_work->device, - fw_work->uevent, true); + ret = _request_firmware(&fw, fw_work->name, fw_work->device, + fw_work->uevent, true); fw_work->cont(fw, fw_work->context); module_put(fw_work->module); kfree(fw_work); + return ret; } @@ -679,34 +666,33 @@ request_firmware_nowait( void (*cont)(const struct firmware *fw, void *context)) { struct task_struct *task; - struct firmware_work *fw_work = kmalloc(sizeof (struct firmware_work), - gfp); + struct firmware_work *fw_work; + fw_work = kzalloc(sizeof (struct firmware_work), gfp); if (!fw_work) return -ENOMEM; + + fw_work->module = module; + fw_work->name = name; + fw_work->device = device; + fw_work->context = context; + fw_work->cont = cont; + fw_work->uevent = uevent; + if (!try_module_get(module)) { kfree(fw_work); return -EFAULT; } - *fw_work = (struct firmware_work) { - .module = module, - .name = name, - .device = device, - .context = context, - .cont = cont, - .uevent = uevent, - }; - task = kthread_run(request_firmware_work_func, fw_work, "firmware/%s", name); - if (IS_ERR(task)) { fw_work->cont(NULL, fw_work->context); module_put(fw_work->module); kfree(fw_work); return PTR_ERR(task); } + return 0; } diff --git a/drivers/base/platform.c b/drivers/base/platform.c index f699fabf403b..c6c933f58102 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) { |