mirror of
https://github.com/adulau/aha.git
synced 2024-12-30 20:56:23 +00:00
326 lines
12 KiB
Text
326 lines
12 KiB
Text
The following is a list of files and features that are going to be
|
|
removed in the kernel source tree. Every entry should contain what
|
|
exactly is going away, why it is happening, and who is going to be doing
|
|
the work. When the feature is removed from the kernel, it should also
|
|
be removed from this file.
|
|
|
|
---------------------------
|
|
|
|
What: /sys/devices/.../power/state
|
|
dev->power.power_state
|
|
dpm_runtime_{suspend,resume)()
|
|
When: July 2007
|
|
Why: Broken design for runtime control over driver power states, confusing
|
|
driver-internal runtime power management with: mechanisms to support
|
|
system-wide sleep state transitions; event codes that distinguish
|
|
different phases of swsusp "sleep" transitions; and userspace policy
|
|
inputs. This framework was never widely used, and most attempts to
|
|
use it were broken. Drivers should instead be exposing domain-specific
|
|
interfaces either to kernel or to userspace.
|
|
Who: Pavel Machek <pavel@suse.cz>
|
|
|
|
---------------------------
|
|
|
|
What: RAW driver (CONFIG_RAW_DRIVER)
|
|
When: December 2005
|
|
Why: declared obsolete since kernel 2.6.3
|
|
O_DIRECT can be used instead
|
|
Who: Adrian Bunk <bunk@stusta.de>
|
|
|
|
---------------------------
|
|
|
|
What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN
|
|
When: June 2007
|
|
Why: Deprecated in favour of the more efficient and robust rawiso interface.
|
|
Affected are applications which use the deprecated part of libraw1394
|
|
(raw1394_iso_write, raw1394_start_iso_write, raw1394_start_iso_rcv,
|
|
raw1394_stop_iso_rcv) or bypass libraw1394.
|
|
Who: Dan Dennedy <dan@dennedy.org>, Stefan Richter <stefanr@s5r6.in-berlin.de>
|
|
|
|
---------------------------
|
|
|
|
What: dv1394 driver (CONFIG_IEEE1394_DV1394)
|
|
When: June 2007
|
|
Why: Replaced by raw1394 + userspace libraries, notably libiec61883. This
|
|
shift of application support has been indicated on www.linux1394.org
|
|
and developers' mailinglists for quite some time. Major applications
|
|
have been converted, with the exception of ffmpeg and hence xine.
|
|
Piped output of dvgrab2 is a partial equivalent to dv1394.
|
|
Who: Dan Dennedy <dan@dennedy.org>, Stefan Richter <stefanr@s5r6.in-berlin.de>
|
|
|
|
---------------------------
|
|
|
|
What: Video4Linux API 1 ioctls and video_decoder.h from Video devices.
|
|
When: December 2006
|
|
Why: V4L1 AP1 was replaced by V4L2 API. during migration from 2.4 to 2.6
|
|
series. The old API have lots of drawbacks and don't provide enough
|
|
means to work with all video and audio standards. The newer API is
|
|
already available on the main drivers and should be used instead.
|
|
Newer drivers should use v4l_compat_translate_ioctl function to handle
|
|
old calls, replacing to newer ones.
|
|
Decoder iocts are using internally to allow video drivers to
|
|
communicate with video decoders. This should also be improved to allow
|
|
V4L2 calls being translated into compatible internal ioctls.
|
|
Who: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
|
|
|
|
---------------------------
|
|
|
|
What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl])
|
|
When: November 2005
|
|
Files: drivers/pcmcia/: pcmcia_ioctl.c
|
|
Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a
|
|
normal hotpluggable bus, and with it using the default kernel
|
|
infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA
|
|
control ioctl needed by cardmgr and cardctl from pcmcia-cs is
|
|
unnecessary, and makes further cleanups and integration of the
|
|
PCMCIA subsystem into the Linux kernel device driver model more
|
|
difficult. The features provided by cardmgr and cardctl are either
|
|
handled by the kernel itself now or are available in the new
|
|
pcmciautils package available at
|
|
http://kernel.org/pub/linux/utils/kernel/pcmcia/
|
|
Who: Dominik Brodowski <linux@brodo.de>
|
|
|
|
---------------------------
|
|
|
|
What: remove EXPORT_SYMBOL(kernel_thread)
|
|
When: August 2006
|
|
Files: arch/*/kernel/*_ksyms.c
|
|
Why: kernel_thread is a low-level implementation detail. Drivers should
|
|
use the <linux/kthread.h> API instead which shields them from
|
|
implementation details and provides a higherlevel interface that
|
|
prevents bugs and code duplication
|
|
Who: Christoph Hellwig <hch@lst.de>
|
|
|
|
---------------------------
|
|
|
|
What: CONFIG_FORCED_INLINING
|
|
When: June 2006
|
|
Why: Config option is there to see if gcc is good enough. (in january
|
|
2006). If it is, the behavior should just be the default. If it's not,
|
|
the option should just go away entirely.
|
|
Who: Arjan van de Ven
|
|
|
|
---------------------------
|
|
|
|
What: eepro100 network driver
|
|
When: January 2007
|
|
Why: replaced by the e100 driver
|
|
Who: Adrian Bunk <bunk@stusta.de>
|
|
|
|
---------------------------
|
|
|
|
What: drivers depending on OSS_OBSOLETE_DRIVER
|
|
When: options in 2.6.20, code in 2.6.22
|
|
Why: OSS drivers with ALSA replacements
|
|
Who: Adrian Bunk <bunk@stusta.de>
|
|
|
|
---------------------------
|
|
|
|
What: pci_module_init(driver)
|
|
When: January 2007
|
|
Why: Is replaced by pci_register_driver(pci_driver).
|
|
Who: Richard Knutsson <ricknu-0@student.ltu.se> and Greg Kroah-Hartman <gregkh@suse.de>
|
|
|
|
---------------------------
|
|
|
|
What: Usage of invalid timevals in setitimer
|
|
When: March 2007
|
|
Why: POSIX requires to validate timevals in the setitimer call. This
|
|
was never done by Linux. The invalid (e.g. negative timevals) were
|
|
silently converted to more or less random timeouts and intervals.
|
|
Until the removal a per boot limited number of warnings is printed
|
|
and the timevals are sanitized.
|
|
|
|
Who: Thomas Gleixner <tglx@linutronix.de>
|
|
|
|
---------------------------
|
|
|
|
What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports
|
|
(temporary transition config option provided until then)
|
|
The transition config option will also be removed at the same time.
|
|
When: before 2.6.19
|
|
Why: Unused symbols are both increasing the size of the kernel binary
|
|
and are often a sign of "wrong API"
|
|
Who: Arjan van de Ven <arjan@linux.intel.com>
|
|
|
|
---------------------------
|
|
|
|
What: mount/umount uevents
|
|
When: February 2007
|
|
Why: These events are not correct, and do not properly let userspace know
|
|
when a file system has been mounted or unmounted. Userspace should
|
|
poll the /proc/mounts file instead to detect this properly.
|
|
Who: Greg Kroah-Hartman <gregkh@suse.de>
|
|
|
|
---------------------------
|
|
|
|
What: USB driver API moves to EXPORT_SYMBOL_GPL
|
|
When: February 2008
|
|
Files: include/linux/usb.h, drivers/usb/core/driver.c
|
|
Why: The USB subsystem has changed a lot over time, and it has been
|
|
possible to create userspace USB drivers using usbfs/libusb/gadgetfs
|
|
that operate as fast as the USB bus allows. Because of this, the USB
|
|
subsystem will not be allowing closed source kernel drivers to
|
|
register with it, after this grace period is over. If anyone needs
|
|
any help in converting their closed source drivers over to use the
|
|
userspace filesystems, please contact the
|
|
linux-usb-devel@lists.sourceforge.net mailing list, and the developers
|
|
there will be glad to help you out.
|
|
Who: Greg Kroah-Hartman <gregkh@suse.de>
|
|
|
|
---------------------------
|
|
|
|
What: Interrupt only SA_* flags
|
|
When: Januar 2007
|
|
Why: The interrupt related SA_* flags are replaced by IRQF_* to move them
|
|
out of the signal namespace.
|
|
|
|
Who: Thomas Gleixner <tglx@linutronix.de>
|
|
|
|
---------------------------
|
|
|
|
What: PHYSDEVPATH, PHYSDEVBUS, PHYSDEVDRIVER in the uevent environment
|
|
When: October 2008
|
|
Why: The stacking of class devices makes these values misleading and
|
|
inconsistent.
|
|
Class devices should not carry any of these properties, and bus
|
|
devices have SUBSYTEM and DRIVER as a replacement.
|
|
Who: Kay Sievers <kay.sievers@suse.de>
|
|
|
|
---------------------------
|
|
|
|
What: i2c-isa
|
|
When: December 2006
|
|
Why: i2c-isa is a non-sense and doesn't fit in the device driver
|
|
model. Drivers relying on it are better implemented as platform
|
|
drivers.
|
|
Who: Jean Delvare <khali@linux-fr.org>
|
|
|
|
---------------------------
|
|
|
|
What: i2c_adapter.dev
|
|
i2c_adapter.list
|
|
When: July 2007
|
|
Why: Superfluous, given i2c_adapter.class_dev:
|
|
* The "dev" was a stand-in for the physical device node that legacy
|
|
drivers would not have; but now it's almost always present. Any
|
|
remaining legacy drivers must upgrade (they now trigger warnings).
|
|
* The "list" duplicates class device children.
|
|
The delay in removing this is so upgraded lm_sensors and libsensors
|
|
can get deployed. (Removal causes minor changes in the sysfs layout,
|
|
notably the location of the adapter type name and parenting the i2c
|
|
client hardware directly from their controller.)
|
|
Who: Jean Delvare <khali@linux-fr.org>,
|
|
David Brownell <dbrownell@users.sourceforge.net>
|
|
|
|
---------------------------
|
|
|
|
What: drivers depending on OBSOLETE_OSS
|
|
When: options in 2.6.22, code in 2.6.24
|
|
Why: OSS drivers with ALSA replacements
|
|
Who: Adrian Bunk <bunk@stusta.de>
|
|
|
|
---------------------------
|
|
|
|
What: IPv4 only connection tracking/NAT/helpers
|
|
When: 2.6.22
|
|
Why: The new layer 3 independant connection tracking replaces the old
|
|
IPv4 only version. After some stabilization of the new code the
|
|
old one will be removed.
|
|
Who: Patrick McHardy <kaber@trash.net>
|
|
|
|
---------------------------
|
|
|
|
What: ACPI hooks (X86_SPEEDSTEP_CENTRINO_ACPI) in speedstep-centrino driver
|
|
When: December 2006
|
|
Why: Speedstep-centrino driver with ACPI hooks and acpi-cpufreq driver are
|
|
functionally very much similar. They talk to ACPI in same way. Only
|
|
difference between them is the way they do frequency transitions.
|
|
One uses MSRs and the other one uses IO ports. Functionaliy of
|
|
speedstep_centrino with ACPI hooks is now merged into acpi-cpufreq.
|
|
That means one common driver will support all Intel Enhanced Speedstep
|
|
capable CPUs. That means less confusion over name of
|
|
speedstep-centrino driver (with that driver supposed to be used on
|
|
non-centrino platforms). That means less duplication of code and
|
|
less maintenance effort and no possibility of these two drivers
|
|
going out of sync.
|
|
Current users of speedstep_centrino with ACPI hooks are requested to
|
|
switch over to acpi-cpufreq driver. speedstep-centrino will continue
|
|
to work using older non-ACPI static table based scheme even after this
|
|
date.
|
|
|
|
Who: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
|
|
|
|
---------------------------
|
|
|
|
What: /sys/firmware/acpi/namespace
|
|
When: 2.6.21
|
|
Why: The ACPI namespace is effectively the symbol list for
|
|
the BIOS. The device names are completely arbitrary
|
|
and have no place being exposed to user-space.
|
|
|
|
For those interested in the BIOS ACPI namespace,
|
|
the BIOS can be extracted and disassembled with acpidump
|
|
and iasl as documented in the pmtools package here:
|
|
http://ftp.kernel.org/pub/linux/kernel/people/lenb/acpi/utils
|
|
Who: Len Brown <len.brown@intel.com>
|
|
|
|
---------------------------
|
|
|
|
What: ACPI procfs interface
|
|
When: July 2007
|
|
Why: After ACPI sysfs conversion, ACPI attributes will be duplicated
|
|
in sysfs and the ACPI procfs interface should be removed.
|
|
Who: Zhang Rui <rui.zhang@intel.com>
|
|
|
|
---------------------------
|
|
|
|
What: /proc/acpi/button
|
|
When: August 2007
|
|
Why: /proc/acpi/button has been replaced by events to the input layer
|
|
since 2.6.20.
|
|
Who: Len Brown <len.brown@intel.com>
|
|
|
|
---------------------------
|
|
|
|
What: sk98lin network driver
|
|
When: July 2007
|
|
Why: In kernel tree version of driver is unmaintained. Sk98lin driver
|
|
replaced by the skge driver.
|
|
Who: Stephen Hemminger <shemminger@osdl.org>
|
|
|
|
---------------------------
|
|
|
|
What: Compaq touchscreen device emulation
|
|
When: Oct 2007
|
|
Files: drivers/input/tsdev.c
|
|
Why: The code says it was obsolete when it was written in 2001.
|
|
tslib is a userspace library which does anything tsdev can do and
|
|
much more besides in userspace where this code belongs. There is no
|
|
longer any need for tsdev and applications should have converted to
|
|
use tslib by now.
|
|
The name "tsdev" is also extremely confusing and lots of people have
|
|
it loaded when they don't need/use it.
|
|
Who: Richard Purdie <rpurdie@rpsys.net>
|
|
|
|
---------------------------
|
|
|
|
What: Wireless extensions over netlink (CONFIG_NET_WIRELESS_RTNETLINK)
|
|
When: with the merge of wireless-dev, 2.6.22 or later
|
|
Why: The option/code is
|
|
* not enabled on most kernels
|
|
* not required by any userspace tools (except an experimental one,
|
|
and even there only for some parts, others use ioctl)
|
|
* pointless since wext is no longer evolving and the ioctl
|
|
interface needs to be kept
|
|
Who: Johannes Berg <johannes@sipsolutions.net>
|
|
|
|
---------------------------
|
|
|
|
What: i8xx_tco watchdog driver
|
|
When: in 2.6.22
|
|
Why: the i8xx_tco watchdog driver has been replaced by the iTCO_wdt
|
|
watchdog driver.
|
|
Who: Wim Van Sebroeck <wim@iguana.be>
|
|
|
|
---------------------------
|