linux-toradex.git/include/linux/device.h, branch v2.6.13-rc7

[ACPI] merge acpi-2.6.12 branch into latest Linux 2.6.13-rc...

2005-07-12T21:21:56+00:00

Signed-off-by: Len Brown

[ACPI] Bind PCI devices with ACPI devices

2005-07-12T03:28:24+00:00

Implement the framework for binding physical devices
with ACPI devices. A physical bus like PCI bus
should create a 'acpi_bus_type', with:

.find_device:
        For device which has parent such as normal PCI devices.

.find_bridge:
        It's for special devices, such as PCI root bridge
	or IDE controller.  Such devices generally haven't a
	parent or ->bus. We use the special method
	to get an ACPI handle.

Uses new field in struct device: firmware_data

http://bugzilla.kernel.org/show_bug.cgi?id=4277

Signed-off-by: David Shaohua Li 
Signed-off-by: Len Brown

[PATCH] driver core: change bus_rescan_devices to return void

2005-06-30T05:48:04+00:00

No one was looking at the return value of bus_rescan_devices, and it
really wasn't anything that anyone in the kernel would ever care about.
So change it which enabled some counting code to be removed also.

Signed-off-by: Greg Kroah-Hartman

[PATCH] driver core: add bus_find_device & driver_find_device functions

2005-06-30T05:48:03+00:00

Add bus_find_device() and driver_find_device() which allow searching for a
device in the bus's resp. the driver's klist and obtain a reference on it.

Signed-off-by: Cornelia Huck 
Signed-off-by: Greg Kroah-Hartman

[PATCH] Driver core: change device_attribute callbacks

2005-06-20T22:15:31+00:00

This patch adds the device_attribute paramerter to the
device_attribute store and show sysfs callback functions, and passes a
reference to the attribute when the callbacks are called.

Signed-off-by: Yani Ioannou 
Signed-off-by: Greg Kroah-Hartman

[PATCH] Driver Core: fix bk-driver-core kills ppc64

2005-06-20T22:15:27+00:00

There's no check to see if the device is already bound to a driver, which
could do bad things.  The first thing to go wrong is that it will try to match
a driver with a device already bound to one.  In some cases (it appears with
USB with drivers/usb/core/usb.c::usb_match_id()), some drivers will match a
device based on the class type, so it would be common (especially for HID
devices) to match a device that is already bound.

The fun comes when ->probe() is called, it fails, then
driver_probe_device() does this:

	dev->driver = NULL;

Later on, that pointer could be be dereferenced without checking and cause
hell to break loose.

This problem could be nasty. It's very hardware dependent, since some
devices could have a different set of matching qualifiers than others.

Now, I don't quite see exactly where/how you were getting that crash.
You're dereferencing bad memory, but I'm not sure which pointer was bad
and where it came from, but it could have come from a couple of different
places.

The patch below will hopefully fix it all up for you. It's against
2.6.12-rc2-mm1, and does the following:

- Move logic to driver_probe_device() and comments uncommon returns:
  1 - If device is bound
  0 - If device not bound, and no error
  error - If there was an error.

- Move locking to caller of that function, since we want to lock a
  device for the entire time we're trying to bind it to a driver (to
  prevent against a driver being loaded at the same time).

- Update __device_attach() and __driver_attach() to do that locking.

- Check if device is already bound in __driver_attach()

- Update the converse device_release_driver() so it locks the device
  around all of the operations.

- Mark driver_probe_device() as static and remove export. It's an
  internal function, it should stay that way, and there are no other
  callers. If there is ever a need to export it, we can audit it as
  necessary.

Signed-off-by: Andrew Morton

[PATCH] Use a klist for device child lists.

2005-06-20T22:15:23+00:00

- Use klist iterator in device_for_each_child(), making it safe to use for
  removing devices.
- Remove unused list_to_dev() function.
- Kills all usage of devices_subsys.rwsem.

Signed-off-by: Patrick Mochel 
Signed-off-by: Greg Kroah-Hartman

[PATCH] Remove struct device::driver_list.

2005-06-20T22:15:18+00:00

Signed-off-by: Patrick Mochel 
Signed-off-by: Greg Kroah-Hartman

[PATCH] Remove struct device::bus_list.

2005-06-20T22:15:18+00:00

Signed-off-by: Patrick Mochel 
Signed-off-by: Greg Kroah-Hartman

[PATCH] Remove the unused device_find().

2005-06-20T22:15:16+00:00

Signed-off-by: Patrick Mochel 
Signed-off-by: Greg Kroah-Hartman