1 The following is a list of files and features that are going to be
2 removed in the kernel source tree. Every entry should contain what
3 exactly is going away, why it is happening, and who is going to be doing
4 the work. When the feature is removed from the kernel, it should also
5 be removed from this file.
7 ---------------------------
9 What: RAW driver (CONFIG_RAW_DRIVER)
11 Why: declared obsolete since kernel 2.6.3
12 O_DIRECT can be used instead
13 Who: Adrian Bunk <bunk@stusta.de>
15 ---------------------------
17 What: drivers that were depending on OBSOLETE_OSS_DRIVER
18 (config options already removed)
20 Why: OSS drivers with ALSA replacements
21 Who: Adrian Bunk <bunk@stusta.de>
23 ---------------------------
25 What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN
27 Why: Deprecated in favour of the new ioctl-based rawiso interface, which is
28 more efficient. You should really be using libraw1394 for raw1394
30 Who: Jody McIntyre <scjody@modernduck.com>
32 ---------------------------
34 What: sbp2: module parameter "force_inquiry_hack"
36 Why: Superceded by parameter "workarounds". Both parameters are meant to be
37 used ad-hoc and for single devices only, i.e. not in modprobe.conf,
38 therefore the impact of this feature replacement should be low.
39 Who: Stefan Richter <stefanr@s5r6.in-berlin.de>
41 ---------------------------
43 What: Video4Linux API 1 ioctls and video_decoder.h from Video devices.
45 Why: V4L1 AP1 was replaced by V4L2 API. during migration from 2.4 to 2.6
46 series. The old API have lots of drawbacks and don't provide enough
47 means to work with all video and audio standards. The newer API is
48 already available on the main drivers and should be used instead.
49 Newer drivers should use v4l_compat_translate_ioctl function to handle
50 old calls, replacing to newer ones.
51 Decoder iocts are using internally to allow video drivers to
52 communicate with video decoders. This should also be improved to allow
53 V4L2 calls being translated into compatible internal ioctls.
54 Who: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
56 ---------------------------
58 What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl])
60 Files: drivers/pcmcia/: pcmcia_ioctl.c
61 Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a
62 normal hotpluggable bus, and with it using the default kernel
63 infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA
64 control ioctl needed by cardmgr and cardctl from pcmcia-cs is
65 unnecessary, and makes further cleanups and integration of the
66 PCMCIA subsystem into the Linux kernel device driver model more
67 difficult. The features provided by cardmgr and cardctl are either
68 handled by the kernel itself now or are available in the new
69 pcmciautils package available at
70 http://kernel.org/pub/linux/utils/kernel/pcmcia/
71 Who: Dominik Brodowski <linux@brodo.de>
73 ---------------------------
75 What: ip_queue and ip6_queue (old ipv4-only and ipv6-only netfilter queue)
77 Why: This interface has been obsoleted by the new layer3-independent
78 "nfnetlink_queue". The Kernel interface is compatible, so the old
79 ip[6]tables "QUEUE" targets still work and will transparently handle
80 all packets into nfnetlink queue number 0. Userspace users will have
81 to link against API-compatible library on top of libnfnetlink_queue
82 instead of the current 'libipq'.
83 Who: Harald Welte <laforge@netfilter.org>
85 ---------------------------
87 What: remove EXPORT_SYMBOL(kernel_thread)
89 Files: arch/*/kernel/*_ksyms.c
90 Why: kernel_thread is a low-level implementation detail. Drivers should
91 use the <linux/kthread.h> API instead which shields them from
92 implementation details and provides a higherlevel interface that
93 prevents bugs and code duplication
94 Who: Christoph Hellwig <hch@lst.de>
96 ---------------------------
98 What: CONFIG_FORCED_INLINING
100 Why: Config option is there to see if gcc is good enough. (in january
101 2006). If it is, the behavior should just be the default. If it's not,
102 the option should just go away entirely.
103 Who: Arjan van de Ven
105 ---------------------------
107 What: START_ARRAY ioctl for md
109 Files: drivers/md/md.c
110 Why: Not reliable by design - can fail when most needed.
112 Who: NeilBrown <neilb@suse.de>
114 ---------------------------
116 What: eepro100 network driver
118 Why: replaced by the e100 driver
119 Who: Adrian Bunk <bunk@stusta.de>
121 ---------------------------
123 What: pci_module_init(driver)
125 Why: Is replaced by pci_register_driver(pci_driver).
126 Who: Richard Knutsson <ricknu-0@student.ltu.se> and Greg Kroah-Hartman <gregkh@suse.de>
128 ---------------------------
130 What: Usage of invalid timevals in setitimer
132 Why: POSIX requires to validate timevals in the setitimer call. This
133 was never done by Linux. The invalid (e.g. negative timevals) were
134 silently converted to more or less random timeouts and intervals.
135 Until the removal a per boot limited number of warnings is printed
136 and the timevals are sanitized.
138 Who: Thomas Gleixner <tglx@linutronix.de>
140 ---------------------------
142 What: I2C interface of the it87 driver
144 Why: The ISA interface is faster and should be always available. The I2C
145 probing is also known to cause trouble in at least one case (see
147 Who: Jean Delvare <khali@linux-fr.org>
149 ---------------------------
151 What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports
152 (temporary transition config option provided until then)
153 The transition config option will also be removed at the same time.
155 Why: Unused symbols are both increasing the size of the kernel binary
156 and are often a sign of "wrong API"
157 Who: Arjan van de Ven <arjan@linux.intel.com>
159 ---------------------------
161 What: mount/umount uevents
163 Why: These events are not correct, and do not properly let userspace know
164 when a file system has been mounted or unmounted. Userspace should
165 poll the /proc/mounts file instead to detect this properly.
166 Who: Greg Kroah-Hartman <gregkh@suse.de>
168 ---------------------------
170 What: USB driver API moves to EXPORT_SYMBOL_GPL
172 Files: include/linux/usb.h, drivers/usb/core/driver.c
173 Why: The USB subsystem has changed a lot over time, and it has been
174 possible to create userspace USB drivers using usbfs/libusb/gadgetfs
175 that operate as fast as the USB bus allows. Because of this, the USB
176 subsystem will not be allowing closed source kernel drivers to
177 register with it, after this grace period is over. If anyone needs
178 any help in converting their closed source drivers over to use the
179 userspace filesystems, please contact the
180 linux-usb-devel@lists.sourceforge.net mailing list, and the developers
181 there will be glad to help you out.
182 Who: Greg Kroah-Hartman <gregkh@suse.de>
184 ---------------------------
186 What: find_trylock_page
188 Why: The interface no longer has any callers left in the kernel. It
189 is an odd interface (compared with other find_*_page functions), in
190 that it does not take a refcount to the page, only the page lock.
191 It should be replaced with find_get_page or find_lock_page if possible.
192 This feature removal can be reevaluated if users of the interface
193 cannot cleanly use something else.
194 Who: Nick Piggin <npiggin@suse.de>
196 ---------------------------
198 What: Support for the MIPS EV96100 evaluation board
200 Why: Does no longer build since at least November 15, 2003, apparently
202 Who: Ralf Baechle <ralf@linux-mips.org>
204 ---------------------------
206 What: Support for the Momentum / PMC-Sierra Jaguar ATX evaluation board
208 Why: Does no longer build since quite some time, and was never popular,
209 due to the platform being replaced by successor models. Apparently
210 no user base left. It also is one of the last users of
212 Who: Ralf Baechle <ralf@linux-mips.org>
214 ---------------------------
216 What: Support for the Momentum Ocelot, Ocelot 3, Ocelot C and Ocelot G
218 Why: Some do no longer build and apparently there is no user base left
220 Who: Ralf Baechle <ralf@linux-mips.org>
222 ---------------------------
224 What: Support for MIPS Technologies' Altas and SEAD evaluation board
226 Why: Some do no longer build and apparently there is no user base left
227 for these platforms. Hardware out of production since several years.
228 Who: Ralf Baechle <ralf@linux-mips.org>
230 ---------------------------
232 What: Support for the IT8172-based platforms, ITE 8172G and Globespan IVR
234 Why: Code does no longer build since at least 2.6.0, apparently there is
235 no user base left for these platforms. Hardware out of production
236 since several years and hardly a trace of the manufacturer left on
238 Who: Ralf Baechle <ralf@linux-mips.org>
240 ---------------------------
242 What: Interrupt only SA_* flags
244 Why: The interrupt related SA_* flags are replaced by IRQF_* to move them
245 out of the signal namespace.
247 Who: Thomas Gleixner <tglx@linutronix.de>
249 ---------------------------
251 What: i2c-ite and i2c-algo-ite drivers
253 Why: These drivers never compiled since they were added to the kernel
254 tree 5 years ago. This feature removal can be reevaluated if
255 someone shows interest in the drivers, fixes them and takes over
257 http://marc.theaimsgroup.com/?l=linux-mips&m=115040510817448
258 Who: Jean Delvare <khali@linux-fr.org>
260 ---------------------------
262 What: Bridge netfilter deferred IPv4/IPv6 output hook calling
264 Why: The deferred output hooks are a layering violation causing unusual
265 and broken behaviour on bridge devices. Examples of things they
266 break include QoS classifation using the MARK or CLASSIFY targets,
267 the IPsec policy match and connection tracking with VLANs on a
268 bridge. Their only use is to enable bridge output port filtering
269 within iptables with the physdev match, which can also be done by
270 combining iptables and ebtables using netfilter marks. Until it
271 will get removed the hook deferral is disabled by default and is
272 only enabled when needed.
274 Who: Patrick McHardy <kaber@trash.net>
276 ---------------------------