user/sven/linux.git/include/linux/of_device.h, branch v3.4.44

Merge tag 'device-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2012-03-24T17:41:37Z

Pull avoidance patches from Paul Gortmaker: "Nearly every subsystem has some kind of header with a proto like: void foo(struct device *dev); and yet there is no reason for most of these guys to care about the sub fields within the device struct. This allows us to significantly reduce the scope of headers including headers. For this instance, a reduction of about 40% is achieved by replacing the include with the simple fact that the device is some kind of a struct. Unlike the much larger module.h cleanup, this one is simply two commits. One to fix the implicit users, and then one to delete the device.h includes from the linux/include/ dir wherever possible." * tag 'device-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: device.h: audit and cleanup users in main include dir device.h: cleanup users outside of linux/include (C files)

device.h: audit and cleanup users in main include dir

2012-03-16T14:38:24Z

The header includes a lot of stuff, and it in turn gets a lot of use just for the basic "struct device" which appears so often. Clean up the users as follows: 1) For those headers only needing "struct device" as a pointer in fcn args, replace the include with exactly that. 2) For headers not really using anything from device.h, simply delete the include altogether. 3) For headers relying on getting device.h implicitly before being included themselves, now explicitly include device.h 4) For files in which doing #1 or #2 uncovers an implicit dependency on some other header, fix by explicitly adding the required header(s). Any C files that were implicitly relying on device.h to be present have already been dealt with in advance. Total removals from #1 and #2: 51. Total additions coming from #3: 9. Total other implicit dependencies from #4: 7. As of 3.3-rc1, there were 110, so a net removal of 42 gives about a 38% reduction in device.h presence in include/* Signed-off-by: Paul Gortmaker

drivercore: Output common devicetree information in uevent

2012-02-01T21:26:30Z

When userspace needs to find a specific device, it currently isn't easy to resolve a /sys/devices/ path from a specific device tree node. Nor is it easy to obtain the compatible list for devices. This patch generalizes the code that inserts OF_* values into the uevent device attribute so that any device that is attached to an OF node will have that information exported to userspace. Without this patch only platform devices and some powerpc-specific busses have access to this data. The original function also creates a MODALIAS property for the compatible list, but that code has not been generalized into the common case because it has the potential to break module loading on a lot of bus types. Bus types are still responsible for their own MODALIAS properties. Boot tested on ARM and compile tested on PowerPC and SPARC. Signed-off-by: Grant Likely Acked-by: Greg Kroah-Hartman Cc: Tobias Klauser Cc: Frederic Lambert Cc: Rob Herring Cc: Mark Brown Cc: "David S. Miller" Cc: Benjamin Herrenschmidt

drivercore: revert addition of of_match to struct device

2011-05-18T18:32:23Z

Commit b826291c, "drivercore/dt: add a match table pointer to struct device" added an of_match pointer to struct device to cache the of_match_table entry discovered at driver match time. This was unsafe because matching is not an atomic operation with probing a driver. If two or more drivers are attempted to be matched to a driver at the same time, then the cached matching entry pointer could get overwritten. This patch reverts the of_match cache pointer and reworks all users to call of_match_device() directly instead. Signed-off-by: Grant Likely

of: fix race when matching drivers

2011-05-18T16:19:36Z

If two drivers are probing devices at the same time, both will write their match table result to the dev->of_match cache at the same time. Only write the result if the device matches. In a thread titled "SBus devices sometimes detected, sometimes not", Meelis reported his SBus hme was not detected about 50% of the time. From the debug suggested by Grant it was obvious another driver matched some devices between the call to match the hme and the hme discovery failling. Reported-by: Meelis Roos Signed-off-by: Milton Miller [grant.likely: modified to only call of_match_device() once] Signed-off-by: Grant Likely

drivercore/dt: add a match table pointer to struct device

2011-02-28T08:36:38Z

Add a new .of_match field to struct device which points at the matching device driver .of_match_table entry when a device is probed via the device tree Signed-off-by: Grant Likely Acked-by: Greg Kroah-Hartman

of/device: Rework to use common platform_device_alloc() for allocating devices

2010-10-21T17:10:10Z

The current code allocates and manages platform_devices created from the device tree manually. It also uses an unsafe shortcut for allocating the platform_device and the resource table at the same time. (which I added in the last rework; sorry). This patch refactors the code to use platform_device_alloc() for allocating new devices. This reduces the amount of custom code implemented by of_platform, eliminates the unsafe alloc trick, and has the side benefit of letting the platform_bus code manage freeing the device data and resources when the device is freed. Signed-off-by: Grant Likely Cc: Benjamin Herrenschmidt Cc: Greg Kroah-Hartman Cc: "David S. Miller" Cc: Michal Simek

of/device: Replace struct of_device with struct platform_device

2010-08-06T15:25:50Z

of_device is just an alias for platform_device, so remove it entirely. Also replace to_of_device() with to_platform_device() and update comment blocks. This patch was initially generated from the following semantic patch, and then edited by hand to pick up the bits that coccinelle didn't catch. @@ @@ -struct of_device +struct platform_device Signed-off-by: Grant Likely Reviewed-by: David S. Miller

of/device: Make of_device_make_bus_id() usable by other code.

2010-07-30T06:03:58Z

The AMBA bus should also use of_device_make_bus_id() when populating device out of device tree data. This patch makes the function non-static, and adds a suitable prototype in of_device.h Signed-off-by: Grant Likely

of/device: Replace of_device with platform_device in includes and core code

2010-07-24T15:58:21Z

of_device is currently just an #define alias to platform_device until it gets removed entirely. This patch removes references to it from the include directories and the core drivers/of code. Signed-off-by: Grant Likely Acked-by: David S. Miller