linux/drivers/base/class.c, branch v3.12.10

sysfs.h: remove attr_name() macro

2013-08-22T17:25:34Z

Gotta love a macro that doesn't reduce the typing you have to do. Also, only the driver core, and one network driver uses this. The driver core functions will be going away soon, and I'll convert the network driver soon to not need this as well, so delete it for now before anyone else gets some bright ideas and wants to use it. Signed-off-by: Greg Kroah-Hartman

driver-core: constify data for class_find_device()

2013-02-06T20:18:56Z

All in-kernel users of class_find_device() don't really need mutable data for match callback. In two places (kernel/power/suspend_test.c, drivers/scsi/osd/osd_uld.c) this patch changes match callbacks to use const search data. The const is propagated to rtc_class_open() and power_supply_get_by_name() parameters. Note that there's a dev reference leak in suspend_test.c that's not touched in this patch. Signed-off-by: Michał Mirosław Acked-by: Grant Likely Signed-off-by: Greg Kroah-Hartman

driver-core: implement 'sysdev' functionality for regular devices and buses

2011-12-14T22:29:38Z

All sysdev classes and sysdev devices will converted to regular devices and buses to properly hook userspace into the event processing. There is no interesting difference between a 'sysdev' and 'device' which would justify to roll an entire own subsystem with different userspace export semantics. Userspace relies on events and generic sysfs subsystem infrastructure from sysdev devices, which are currently not properly available. Every converted sysdev class will create a regular device with the class name in /sys/devices/system and all registered devices will becom a children of theses devices. For compatibility reasons, the sysdev class-wide attributes are created at this parent device. (Do not copy that logic for anything new, subsystem- wide properties belong to the subsystem, not to some fake parent device created in /sys/devices.) Every sysdev driver is implemented as a simple subsystem interface now, and no longer called a driver. After all sysdev classes are ported to regular driver core entities, the sysdev implementation will be entirely removed from the kernel. Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman

class: Implement support for class attrs in tagged sysfs directories.

2011-10-19T23:24:15Z

Signed-off-by: Eric W. Biederman Acked-by: Greg Kroah-Hartman Signed-off-by: David S. Miller

driver-core: merge private parts of class and bus

2010-11-17T22:21:08Z

As classes and busses are pretty much the same thing, and we want to merge them together into a 'subsystem' in the future, let us share the same private data parts to make that merge easier. Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman

driver core: fix whitespace in class_attr_string

2010-11-11T01:00:12Z

869dfc875e3 addded a long line and indented with spaces. Fix. Signed-off-by: Brandon Philips Signed-off-by: Greg Kroah-Hartman

SYSFS: Allow boot time switching between deprecated and modern sysfs layout

2010-10-22T17:16:43Z

I have some systems which need legacy sysfs due to old tools that are making assumptions that a directory can never be a symlink to another directory, and it's a big hazzle to compile separate kernels for them. This patch turns CONFIG_SYSFS_DEPRECATED into a run time option that can be switched on/off the kernel command line. This way the same binary can be used in both cases with just a option on the command line. The old CONFIG_SYSFS_DEPRECATED_V2 option is still there to set the default. I kept the weird name to not break existing config files. Also the compat code can be still completely disabled by undefining CONFIG_SYSFS_DEPRECATED_SWITCH -- just the optimizer takes care of this now instead of lots of ifdefs. This makes the code look nicer. v2: This is an updated version on top of Kay's patch to only handle the block devices. I tested it on my old systems and that seems to work. Cc: axboe@kernel.dk Signed-off-by: Andi Kleen Cc: Kay Sievers Signed-off-by: Greg Kroah-Hartman

driver core: remove CONFIG_SYSFS_DEPRECATED_V2 but keep it for block devices

2010-10-22T17:16:43Z

This patch removes the old CONFIG_SYSFS_DEPRECATED_V2 config option, but it keeps the logic around to handle block devices in the old manner as some people like to run new kernel versions on old (pre 2007/2008) distros. Signed-off-by: Kay Sievers Cc: Jens Axboe Cc: Stephen Hemminger Cc: "Eric W. Biederman" Cc: Alan Stern Cc: "James E.J. Bottomley" Cc: Andrew Morton Cc: Alexey Kuznetsov Cc: Randy Dunlap Cc: Tejun Heo Cc: "David S. Miller" Cc: Jaroslav Kysela Cc: Takashi Iwai Cc: Ingo Molnar Cc: Peter Zijlstra Cc: David Howells Signed-off-by: Greg Kroah-Hartman

kobj: Add basic infrastructure for dealing with namespaces.

2010-05-21T16:37:31Z

Move complete knowledge of namespaces into the kobject layer so we can use that information when reporting kobjects to userspace. Signed-off-by: Eric W. Biederman Signed-off-by: Greg Kroah-Hartman

driver-core: document ERR_PTR() return values

2010-03-19T14:12:21Z

A number of functions in the driver core return ERR_PTR() values on error. Document this in the kernel-doc of the functions. Signed-off-by: Jani Nikula Signed-off-by: Greg Kroah-Hartman