linux/drivers/base/devres.c, branch v2.6.32

devres: WARN() and return, don't crash on device_del() of uninitialized device

2009-07-12T20:02:09Z

I just debugged an obscure crash caused by a device_del() of a all NULL'd out struct device (in usb-serial) and found that a patch like this one would have saved me time (in addition to improved chances of a bug report from users hitting similar driver bugs). [akpm@linux-foundation.org: cleanup] Signed-off-by: Benjamin Herrenschmidt Cc: Kay Sievers Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

Driver core: fix devres_release_all() return value

2007-07-11T23:09:02Z

Every file should include the headers containing the prototypes for it's global functions. Since the GNU C compiler is now able to detect that the function prototype of devres_release_all() in the header and the actual function disagree regarding the return value, this patch also fixes this bug. Signed-off-by: Adrian Bunk Acked-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman

devres: kernel-doc and DocBook

2007-05-09T05:02:59Z

Make devres.c ready for adding to DocBook. Add devres.c to DocBook. Signed-off-by: Randy Dunlap Signed-off-by: Adrian Bunk

devres: device resource management

2007-02-09T22:39:36Z

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 Signed-off-by: Jeff Garzik