From: Kristian Høgsberg Date: Wed, 21 Mar 2007 00:58:33 +0000 (-0400) Subject: firewire: Make use of struct device_type. X-Git-Tag: MMI-PSA29.97-13-9~43254^2~40 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=21351dbe4e61270f28cf61c685c745416554a4f1;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git firewire: Make use of struct device_type. The device_type struct is useful for setting attributes for a device and overriding .release and .uevent for a group of devices. This patch uses it this way to clean up the sysfs code a bit. Signed-off-by: Kristian Høgsberg Signed-off-by: Stefan Richter --- diff --git a/drivers/firewire/fw-device.c b/drivers/firewire/fw-device.c index a834221b7588..59451f524fc3 100644 --- a/drivers/firewire/fw-device.c +++ b/drivers/firewire/fw-device.c @@ -138,9 +138,6 @@ fw_unit_uevent(struct device *dev, char **envp, int num_envp, int length = 0; int i = 0; - if (!is_fw_unit(dev)) - goto out; - get_modalias(unit, modalias, sizeof modalias); if (add_uevent_var(envp, num_envp, &i, @@ -148,7 +145,6 @@ fw_unit_uevent(struct device *dev, char **envp, int num_envp, "MODALIAS=%s", modalias)) return -ENOMEM; - out: envp[i] = NULL; return 0; @@ -157,7 +153,6 @@ fw_unit_uevent(struct device *dev, char **envp, int num_envp, struct bus_type fw_bus_type = { .name = "firewire", .match = fw_unit_match, - .uevent = fw_unit_uevent, }; EXPORT_SYMBOL(fw_bus_type); @@ -199,8 +194,8 @@ int fw_device_enable_phys_dma(struct fw_device *device) EXPORT_SYMBOL(fw_device_enable_phys_dma); static ssize_t -show_modalias_attribute(struct device *dev, - struct device_attribute *attr, char *buf) +modalias_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct fw_unit *unit = fw_unit(dev); int length; @@ -211,41 +206,37 @@ show_modalias_attribute(struct device *dev, return length + 1; } -static struct device_attribute modalias_attribute = { - .attr = { .name = "modalias", .mode = S_IRUGO, }, - .show = show_modalias_attribute, -}; - static ssize_t -show_config_rom_attribute(struct device *dev, - struct device_attribute *attr, char *buf) +rom_index_show(struct device *dev, + struct device_attribute *attr, char *buf) { - struct fw_device *device = fw_device(dev); - - memcpy(buf, device->config_rom, device->config_rom_length * 4); + struct fw_device *device = fw_device(dev->parent); + struct fw_unit *unit = fw_unit(dev); - return device->config_rom_length * 4; + return snprintf(buf, PAGE_SIZE, "%d\n", + (int)(unit->directory - device->config_rom)); } -static struct device_attribute config_rom_attribute = { - .attr = {.name = "config_rom", .mode = S_IRUGO,}, - .show = show_config_rom_attribute, +static struct device_attribute fw_unit_attributes[] = { + __ATTR_RO(modalias), + __ATTR_RO(rom_index), + __ATTR_NULL, }; static ssize_t -show_rom_index_attribute(struct device *dev, - struct device_attribute *attr, char *buf) +config_rom_show(struct device *dev, + struct device_attribute *attr, char *buf) { - struct fw_device *device = fw_device(dev->parent); - struct fw_unit *unit = fw_unit(dev); + struct fw_device *device = fw_device(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", - (int)(unit->directory - device->config_rom)); + memcpy(buf, device->config_rom, device->config_rom_length * 4); + + return device->config_rom_length * 4; } -static struct device_attribute rom_index_attribute = { - .attr = { .name = "rom_index", .mode = S_IRUGO, }, - .show = show_rom_index_attribute, +static struct device_attribute fw_device_attributes[] = { + __ATTR_RO(config_rom), + __ATTR_NULL, }; struct read_quadlet_callback_data { @@ -370,9 +361,15 @@ static void fw_unit_release(struct device *dev) kfree(unit); } +static struct device_type fw_unit_type = { + .attrs = fw_unit_attributes, + .uevent = fw_unit_uevent, + .release = fw_unit_release, +}; + static int is_fw_unit(struct device *dev) { - return dev->release == fw_unit_release; + return dev->type == &fw_unit_type; } static void create_units(struct fw_device *device) @@ -397,7 +394,7 @@ static void create_units(struct fw_device *device) unit->directory = ci.p + value - 1; unit->device.bus = &fw_bus_type; - unit->device.release = fw_unit_release; + unit->device.type = &fw_unit_type; unit->device.parent = &device->device; snprintf(unit->device.bus_id, sizeof unit->device.bus_id, "%s.%d", device->device.bus_id, i++); @@ -406,27 +403,12 @@ static void create_units(struct fw_device *device) kfree(unit); continue; } - - if (device_create_file(&unit->device, &modalias_attribute) < 0) { - device_unregister(&unit->device); - kfree(unit); - } - - if (device_create_file(&unit->device, &rom_index_attribute) < 0) { - device_unregister(&unit->device); - kfree(unit); - } } } static int shutdown_unit(struct device *device, void *data) { - struct fw_unit *unit = fw_unit(device); - - if (is_fw_unit(device)) { - device_remove_file(&unit->device, &modalias_attribute); - device_unregister(&unit->device); - } + device_unregister(device); return 0; } @@ -456,11 +438,15 @@ static void fw_device_shutdown(struct work_struct *work) up_write(&fw_bus_type.subsys.rwsem); fw_device_cdev_remove(device); - device_remove_file(&device->device, &config_rom_attribute); device_for_each_child(&device->device, NULL, shutdown_unit); device_unregister(&device->device); } +static struct device_type fw_device_type = { + .attrs = fw_device_attributes, + .release = fw_device_release, +}; + /* These defines control the retry behavior for reading the config * rom. It shouldn't be necessary to tweak these; if the device * doesn't respond to a config rom read within 10 seconds, it's not @@ -507,7 +493,7 @@ static void fw_device_init(struct work_struct *work) goto error; device->device.bus = &fw_bus_type; - device->device.release = fw_device_release; + device->device.type = &fw_device_type; device->device.parent = device->card->device; device->device.devt = MKDEV(fw_cdev_major, minor); snprintf(device->device.bus_id, sizeof device->device.bus_id, @@ -518,11 +504,6 @@ static void fw_device_init(struct work_struct *work) goto error_with_cdev; } - if (device_create_file(&device->device, &config_rom_attribute) < 0) { - fw_error("Failed to create config rom file.\n"); - goto error_with_device; - } - create_units(device); /* Transition the device to running state. If it got pulled @@ -549,8 +530,6 @@ static void fw_device_init(struct work_struct *work) return; - error_with_device: - device_del(&device->device); error_with_cdev: down_write(&fw_bus_type.subsys.rwsem); idr_remove(&fw_device_idr, minor);