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authorTejun Heo <htejun@gmail.com>2007-01-20 08:00:26 +0100
committerJeff Garzik <jeff@garzik.org>2007-02-09 23:39:36 +0100
commit9ac7849e35f705830f7b016ff272b0ff1f7ff759 (patch)
tree7f17cdff87e154937a15cc2ec8da9b4e6018ce8e /drivers/base/base.h
parentfix CONFIG_SATA_SIS=y compile error (diff)
downloadlinux-9ac7849e35f705830f7b016ff272b0ff1f7ff759.tar.xz
linux-9ac7849e35f705830f7b016ff272b0ff1f7ff759.zip
devres: device resource management
Implement device resource management, in short, devres. A device driver can allocate arbirary size of devres data which is associated with a release function. On driver detach, release function is invoked on the devres data, then, devres data is freed. devreses are typed by associated release functions. Some devreses are better represented by single instance of the type while others need multiple instances sharing the same release function. Both usages are supported. devreses can be grouped using devres group such that a device driver can easily release acquired resources halfway through initialization or selectively release resources (e.g. resources for port 1 out of 4 ports). This patch adds devres core including documentation and the following managed interfaces. * alloc/free : devm_kzalloc(), devm_kzfree() * IO region : devm_request_region(), devm_release_region() * IRQ : devm_request_irq(), devm_free_irq() * DMA : dmam_alloc_coherent(), dmam_free_coherent(), dmam_declare_coherent_memory(), dmam_pool_create(), dmam_pool_destroy() * PCI : pcim_enable_device(), pcim_pin_device(), pci_is_managed() * iomap : devm_ioport_map(), devm_ioport_unmap(), devm_ioremap(), devm_ioremap_nocache(), devm_iounmap(), pcim_iomap_table(), pcim_iomap(), pcim_iounmap() Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/base/base.h')
-rw-r--r--drivers/base/base.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/base/base.h b/drivers/base/base.h
index d26644a59537..de7e1442ce60 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -44,3 +44,4 @@ struct class_device_attribute *to_class_dev_attr(struct attribute *_attr)
extern char *make_class_name(const char *name, struct kobject *kobj);
+extern void devres_release_all(struct device *dev);