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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-06 11:36:30 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-06 11:36:30 -0700
commitab69bcd66fb4be64edfc767365cb9eb084961246 (patch)
treef7623585aee58978fc7814460fff517ec39138f2 /drivers/base
parentc513b67e68787eceafeede32bcd0edbee45c0006 (diff)
parent6937e8f8c0135f2325194c372ada6dc655499992 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (28 commits) driver core: device_rename's new_name can be const sysfs: Remove owner field from sysfs struct attribute powerpc/pci: Remove owner field from attribute initialization in PCI bridge init regulator: Remove owner field from attribute initialization in regulator core driver leds: Remove owner field from attribute initialization in bd2802 driver scsi: Remove owner field from attribute initialization in ARCMSR driver scsi: Remove owner field from attribute initialization in LPFC driver cgroupfs: create /sys/fs/cgroup to mount cgroupfs on Driver core: Add BUS_NOTIFY_BIND_DRIVER driver core: fix memory leak on one error path in bus_register() debugfs: no longer needs to depend on SYSFS sysfs: Fix one more signature discrepancy between sysfs implementation and docs. sysfs: fix discrepancies between implementation and documentation dcdbas: remove a redundant smi_data_buf_free in dcdbas_exit dmi-id: fix a memory leak in dmi_id_init error path sysfs: sysfs_chmod_file's attr can be const firmware: Update hotplug script Driver core: move platform device creation helpers to .init.text (if MODULE=n) Driver core: reduce duplicated code for platform_device creation Driver core: use kmemdup in platform_device_add_resources ...
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/bus.c2
-rw-r--r--drivers/base/core.c2
-rw-r--r--drivers/base/dd.c4
-rw-r--r--drivers/base/dma-coherent.c2
-rw-r--r--drivers/base/firmware_class.c262
-rw-r--r--drivers/base/platform.c110
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)
{