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36 Why: Superceded by parameter "workarounds".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: remove EXPORT_SYMBOL(insert_resource)
60 Files: kernel/resource.c
61 Why: No modular usage in the kernel.
62 Who: Adrian Bunk <bunk@stusta.de>
64 ---------------------------
66 What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl])
68 Files: drivers/pcmcia/: pcmcia_ioctl.c
69 Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a
70 normal hotpluggable bus, and with it using the default kernel
71 infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA
72 control ioctl needed by cardmgr and cardctl from pcmcia-cs is
73 unnecessary, and makes further cleanups and integration of the
74 PCMCIA subsystem into the Linux kernel device driver model more
75 difficult. The features provided by cardmgr and cardctl are either
76 handled by the kernel itself now or are available in the new
77 pcmciautils package available at
78 http://kernel.org/pub/linux/utils/kernel/pcmcia/
79 Who: Dominik Brodowski <linux@brodo.de>
81 ---------------------------
83 What: ip_queue and ip6_queue (old ipv4-only and ipv6-only netfilter queue)
85 Why: This interface has been obsoleted by the new layer3-independent
86 "nfnetlink_queue". The Kernel interface is compatible, so the old
87 ip[6]tables "QUEUE" targets still work and will transparently handle
88 all packets into nfnetlink queue number 0. Userspace users will have
89 to link against API-compatible library on top of libnfnetlink_queue
90 instead of the current 'libipq'.
91 Who: Harald Welte <laforge@netfilter.org>
93 ---------------------------
95 What: remove EXPORT_SYMBOL(kernel_thread)
97 Files: arch/*/kernel/*_ksyms.c
98 Why: kernel_thread is a low-level implementation detail. Drivers should
99 use the <linux/kthread.h> API instead which shields them from
100 implementation details and provides a higherlevel interface that
101 prevents bugs and code duplication
102 Who: Christoph Hellwig <hch@lst.de>
104 ---------------------------
106 What: CONFIG_FORCED_INLINING
108 Why: Config option is there to see if gcc is good enough. (in january
109 2006). If it is, the behavior should just be the default. If it's not,
110 the option should just go away entirely.
111 Who: Arjan van de Ven
113 ---------------------------
115 What: START_ARRAY ioctl for md
117 Files: drivers/md/md.c
118 Why: Not reliable by design - can fail when most needed.
120 Who: NeilBrown <neilb@suse.de>
122 ---------------------------
124 What: eepro100 network driver
126 Why: replaced by the e100 driver
127 Who: Adrian Bunk <bunk@stusta.de>
129 ---------------------------
131 What: pci_module_init(driver)
133 Why: Is replaced by pci_register_driver(pci_driver).
134 Who: Richard Knutsson <ricknu-0@student.ltu.se> and Greg Kroah-Hartman <gregkh@suse.de>
136 ---------------------------
138 What: Usage of invalid timevals in setitimer
140 Why: POSIX requires to validate timevals in the setitimer call. This
141 was never done by Linux. The invalid (e.g. negative timevals) were
142 silently converted to more or less random timeouts and intervals.
143 Until the removal a per boot limited number of warnings is printed
144 and the timevals are sanitized.
146 Who: Thomas Gleixner <tglx@linutronix.de>
148 ---------------------------
150 What: I2C interface of the it87 driver
152 Why: The ISA interface is faster and should be always available. The I2C
153 probing is also known to cause trouble in at least one case (see
155 Who: Jean Delvare <khali@linux-fr.org>
157 ---------------------------
159 What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports
160 (temporary transition config option provided until then)
161 The transition config option will also be removed at the same time.
163 Why: Unused symbols are both increasing the size of the kernel binary
164 and are often a sign of "wrong API"
165 Who: Arjan van de Ven <arjan@linux.intel.com>
167 ---------------------------
169 What: mount/umount uevents
171 Why: These events are not correct, and do not properly let userspace know
172 when a file system has been mounted or unmounted. Userspace should
173 poll the /proc/mounts file instead to detect this properly.
174 Who: Greg Kroah-Hartman <gregkh@suse.de>
176 ---------------------------
178 What: USB driver API moves to EXPORT_SYMBOL_GPL
180 Files: include/linux/usb.h, drivers/usb/core/driver.c
181 Why: The USB subsystem has changed a lot over time, and it has been
182 possible to create userspace USB drivers using usbfs/libusb/gadgetfs
183 that operate as fast as the USB bus allows. Because of this, the USB
184 subsystem will not be allowing closed source kernel drivers to
185 register with it, after this grace period is over. If anyone needs
186 any help in converting their closed source drivers over to use the
187 userspace filesystems, please contact the
188 linux-usb-devel@lists.sourceforge.net mailing list, and the developers
189 there will be glad to help you out.
190 Who: Greg Kroah-Hartman <gregkh@suse.de>
192 ---------------------------
194 What: find_trylock_page
196 Why: The interface no longer has any callers left in the kernel. It
197 is an odd interface (compared with other find_*_page functions), in
198 that it does not take a refcount to the page, only the page lock.
199 It should be replaced with find_get_page or find_lock_page if possible.
200 This feature removal can be reevaluated if users of the interface
201 cannot cleanly use something else.
202 Who: Nick Piggin <npiggin@suse.de>
204 ---------------------------
206 What: Support for the MIPS EV96100 evaluation board
208 Why: Does no longer build since at least November 15, 2003, apparently
210 Who: Ralf Baechle <ralf@linux-mips.org>
212 ---------------------------
214 What: Support for the Momentum / PMC-Sierra Jaguar ATX evaluation board
216 Why: Does no longer build since quite some time, and was never popular,
217 due to the platform being replaced by successor models. Apparently
218 no user base left. It also is one of the last users of
220 Who: Ralf Baechle <ralf@linux-mips.org>
222 ---------------------------
224 What: Support for the Momentum Ocelot, Ocelot 3, Ocelot C and Ocelot G
226 Why: Some do no longer build and apparently there is no user base left
228 Who: Ralf Baechle <ralf@linux-mips.org>
230 ---------------------------
232 What: Support for MIPS Technologies' Altas and SEAD evaluation board
234 Why: Some do no longer build and apparently there is no user base left
235 for these platforms. Hardware out of production since several years.
236 Who: Ralf Baechle <ralf@linux-mips.org>
238 ---------------------------
240 What: Support for the IT8172-based platforms, ITE 8172G and Globespan IVR
242 Why: Code does no longer build since at least 2.6.0, apparently there is
243 no user base left for these platforms. Hardware out of production
244 since several years and hardly a trace of the manufacturer left on
246 Who: Ralf Baechle <ralf@linux-mips.org>
248 ---------------------------
250 What: Interrupt only SA_* flags
252 Why: The interrupt related SA_* flags are replaced by IRQF_* to move them
253 out of the signal namespace.
255 Who: Thomas Gleixner <tglx@linutronix.de>
257 ---------------------------