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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/platform.c
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/platform.c')
-rw-r--r--drivers/base/platform.c110
1 files changed, 29 insertions, 81 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index f699fabf403..c6c933f5810 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)
{