linux/drivers/base/bus.c, branch v3.9

Driver core: treat unregistered bus_types as having no devices

2013-02-04T01:55:29Z

A bus_type has a list of devices (klist_devices), but the list and the subsys_private structure that contains it are not initialized until the bus_type is registered with bus_register(). The panic/reboot path has fixups that look up devices in pci_bus_type. If we panic before registering pci_bus_type, the bus_type exists but the list does not, so mach_reboot_fixups() trips over a null pointer and panics again: mach_reboot_fixups pci_get_device .. bus_find_device(&pci_bus_type, ...) bus->p is NULL Joonsoo reported a problem when panicking before PCI was initialized. I think this patch should be sufficient to replace the patch he posted here: https://lkml.org/lkml/2012/12/28/75 ("[PATCH] x86, reboot: skip reboot_fixups in early boot phase") Reported-by: Joonsoo Kim Signed-off-by: Bjorn Helgaas Cc: stable Signed-off-by: Greg Kroah-Hartman

driver core: fix possible missing of device probe

2013-01-17T21:02:11Z

Inside bus_add_driver(), one device might be added(device_add()) into the bus or probed which is triggered by deferred probe just after completing of driver_attach() and before 'klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers)', so the device won't be probed by this driver. This patch moves the below line 'klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers)' before driver_attach() inside bus_add_driver() to fix the problem. Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman

driver core: remove CONFIG_HOTPLUG ifdefs

2012-11-28T18:33:03Z

Remove conditional code based on CONFIG_HOTPLUG being false. It's always on now in preparation of it going away as an option. Signed-off-by: Bill Pemberton Signed-off-by: Greg Kroah-Hartman

driver core: move uevent call to driver_register

2012-07-17T01:04:25Z

Device driver attribute groups are created after userspace is notified via an add event. Fix this by moving the kobject_uevent call to driver_register after the attribute groups are added. Signed-off-by: Sebastian Ott Signed-off-by: Greg Kroah-Hartman

Revert "driver core: check start node in klist_iter_init_node"

2012-04-20T02:17:30Z

This reverts commit a15d49fd3094cff90e5410ca454a870e0a722fe1 as that patch broke the build. Cc: Hannes Reinecke Reported-by: Stephen Rothwell Signed-off-by: Greg Kroah-Hartman

driver core: check start node in klist_iter_init_node

2012-04-18T22:39:52Z

klist_iter_init_node() takes a node as a start argument. However, this node might not be valid anymore. This patch updates the klist_iter_init_node() and dependent functions to return an error if so. All calling functions have been audited to check for a return code here. Signed-off-by: Hannes Reinecke Cc: Greg Kroah-Hartmann Cc: Kay Sievers Cc: Stable Kernel Cc: Linux Kernel Signed-off-by: Greg Kroah-Hartman

drivers/base/bus.c: local variables should not be exposed globally

2012-04-18T22:39:52Z

The variable 'system_kset' is only referenced in this file and should be marked static to prevent it from being exposed globally. This quiets the sparse waring: warning: symbol 'system_kset' was not declared. Should it be static? Also, remove the comment since drivers/base/sys.c has now been deleted. Signed-off-by: H Hartley Sweeten Cc: Greg Kroah-Hartman Signed-off-by: Greg Kroah-Hartman

Merge 3.3-rc2 into the driver-core-next branch.

2012-02-02T19:24:44Z

This was done to resolve a merge and build problem with the drivers/acpi/processor_driver.c file. Reported-by: Stephen Rothwell Signed-off-by: Greg Kroah-Hartman

driver-core: Fix possible null reference in subsys_interface_unregister

2012-01-24T23:59:19Z

Check if the sif is not NULL before de-referencing it Signed-off-by: Jonghwan Choi Signed-off-by: Greg Kroah-Hartman

kernel-doc: fix new warnings in driver-core

2012-01-23T16:44:53Z

Fix new kernel-doc warnings: Warning(drivers/base/bus.c:925): No description found for parameter 'key' Warning(drivers/base/bus.c:1241): No description found for parameter 'subsys' Warning(drivers/base/bus.c:1241): No description found for parameter 'groups' Signed-off-by: Randy Dunlap Cc: Greg Kroah-Hartman Signed-off-by: Linus Torvalds