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Commit | Line | Data |
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1da177e4 LT |
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. | |
6 | ||
7 | --------------------------- | |
8 | ||
1ebfd79e PM |
9 | What: /sys/devices/.../power/state |
10 | dev->power.power_state | |
11 | dpm_runtime_{suspend,resume)() | |
12 | When: July 2007 | |
13 | Why: Broken design for runtime control over driver power states, confusing | |
14 | driver-internal runtime power management with: mechanisms to support | |
15 | system-wide sleep state transitions; event codes that distinguish | |
16 | different phases of swsusp "sleep" transitions; and userspace policy | |
17 | inputs. This framework was never widely used, and most attempts to | |
18 | use it were broken. Drivers should instead be exposing domain-specific | |
19 | interfaces either to kernel or to userspace. | |
20 | Who: Pavel Machek <pavel@suse.cz> | |
21 | ||
22 | --------------------------- | |
23 | ||
98e7f294 AB |
24 | What: RAW driver (CONFIG_RAW_DRIVER) |
25 | When: December 2005 | |
26 | Why: declared obsolete since kernel 2.6.3 | |
27 | O_DIRECT can be used instead | |
28 | Who: Adrian Bunk <bunk@stusta.de> | |
29 | ||
30 | --------------------------- | |
31 | ||
a1446c7f | 32 | What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN |
d0aef39f | 33 | When: November 2006 |
a1446c7f JM |
34 | Why: Deprecated in favour of the new ioctl-based rawiso interface, which is |
35 | more efficient. You should really be using libraw1394 for raw1394 | |
36 | access anyway. | |
d0aef39f | 37 | Who: Jody McIntyre <scjody@modernduck.com> |
937df8df GC |
38 | |
39 | --------------------------- | |
40 | ||
875c296b | 41 | What: Video4Linux API 1 ioctls and video_decoder.h from Video devices. |
48c06d5e | 42 | When: December 2006 |
875c296b MCC |
43 | Why: V4L1 AP1 was replaced by V4L2 API. during migration from 2.4 to 2.6 |
44 | series. The old API have lots of drawbacks and don't provide enough | |
45 | means to work with all video and audio standards. The newer API is | |
46 | already available on the main drivers and should be used instead. | |
47 | Newer drivers should use v4l_compat_translate_ioctl function to handle | |
48 | old calls, replacing to newer ones. | |
49 | Decoder iocts are using internally to allow video drivers to | |
50 | communicate with video decoders. This should also be improved to allow | |
51 | V4L2 calls being translated into compatible internal ioctls. | |
52 | Who: Mauro Carvalho Chehab <mchehab@brturbo.com.br> | |
53 | ||
54 | --------------------------- | |
55 | ||
bf45d9b0 DB |
56 | What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl]) |
57 | When: November 2005 | |
58 | Files: drivers/pcmcia/: pcmcia_ioctl.c | |
59 | Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a | |
60 | normal hotpluggable bus, and with it using the default kernel | |
61 | infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA | |
62 | control ioctl needed by cardmgr and cardctl from pcmcia-cs is | |
63 | unnecessary, and makes further cleanups and integration of the | |
64 | PCMCIA subsystem into the Linux kernel device driver model more | |
65 | difficult. The features provided by cardmgr and cardctl are either | |
66 | handled by the kernel itself now or are available in the new | |
67 | pcmciautils package available at | |
68 | http://kernel.org/pub/linux/utils/kernel/pcmcia/ | |
69 | Who: Dominik Brodowski <linux@brodo.de> | |
7af4cc3f HW |
70 | |
71 | --------------------------- | |
72 | ||
ac515898 CH |
73 | What: remove EXPORT_SYMBOL(kernel_thread) |
74 | When: August 2006 | |
75 | Files: arch/*/kernel/*_ksyms.c | |
76 | Why: kernel_thread is a low-level implementation detail. Drivers should | |
77 | use the <linux/kthread.h> API instead which shields them from | |
78 | implementation details and provides a higherlevel interface that | |
79 | prevents bugs and code duplication | |
80 | Who: Christoph Hellwig <hch@lst.de> | |
81 | ||
82 | --------------------------- | |
83 | ||
a9df3d0f IM |
84 | What: CONFIG_FORCED_INLINING |
85 | When: June 2006 | |
86 | Why: Config option is there to see if gcc is good enough. (in january | |
87 | 2006). If it is, the behavior should just be the default. If it's not, | |
88 | the option should just go away entirely. | |
89 | Who: Arjan van de Ven | |
90 | ||
91 | --------------------------- | |
92 | ||
c0d3c0c0 AB |
93 | What: eepro100 network driver |
94 | When: January 2007 | |
95 | Why: replaced by the e100 driver | |
96 | Who: Adrian Bunk <bunk@stusta.de> | |
3c9b3a85 JG |
97 | |
98 | --------------------------- | |
99 | ||
1e5f5e5c AB |
100 | What: drivers depending on OSS_OBSOLETE_DRIVER |
101 | When: options in 2.6.20, code in 2.6.22 | |
102 | Why: OSS drivers with ALSA replacements | |
103 | Who: Adrian Bunk <bunk@stusta.de> | |
104 | ||
105 | --------------------------- | |
106 | ||
051d9897 RK |
107 | What: pci_module_init(driver) |
108 | When: January 2007 | |
109 | Why: Is replaced by pci_register_driver(pci_driver). | |
110 | Who: Richard Knutsson <ricknu-0@student.ltu.se> and Greg Kroah-Hartman <gregkh@suse.de> | |
c5e3fbf2 JD |
111 | |
112 | --------------------------- | |
113 | ||
7d99b7d6 TG |
114 | What: Usage of invalid timevals in setitimer |
115 | When: March 2007 | |
116 | Why: POSIX requires to validate timevals in the setitimer call. This | |
117 | was never done by Linux. The invalid (e.g. negative timevals) were | |
118 | silently converted to more or less random timeouts and intervals. | |
119 | Until the removal a per boot limited number of warnings is printed | |
120 | and the timevals are sanitized. | |
121 | ||
122 | Who: Thomas Gleixner <tglx@linutronix.de> | |
123 | ||
124 | --------------------------- | |
125 | ||
c5e3fbf2 JD |
126 | What: I2C interface of the it87 driver |
127 | When: January 2007 | |
128 | Why: The ISA interface is faster and should be always available. The I2C | |
129 | probing is also known to cause trouble in at least one case (see | |
130 | bug #5889.) | |
131 | Who: Jean Delvare <khali@linux-fr.org> | |
fa675765 GKH |
132 | |
133 | --------------------------- | |
134 | ||
f71d20e9 AV |
135 | What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports |
136 | (temporary transition config option provided until then) | |
137 | The transition config option will also be removed at the same time. | |
138 | When: before 2.6.19 | |
139 | Why: Unused symbols are both increasing the size of the kernel binary | |
140 | and are often a sign of "wrong API" | |
141 | Who: Arjan van de Ven <arjan@linux.intel.com> | |
142 | ||
143 | --------------------------- | |
144 | ||
fa675765 GKH |
145 | What: mount/umount uevents |
146 | When: February 2007 | |
147 | Why: These events are not correct, and do not properly let userspace know | |
148 | when a file system has been mounted or unmounted. Userspace should | |
149 | poll the /proc/mounts file instead to detect this properly. | |
150 | Who: Greg Kroah-Hartman <gregkh@suse.de> | |
cf028d17 RB |
151 | |
152 | --------------------------- | |
153 | ||
b87ba0a3 | 154 | What: USB driver API moves to EXPORT_SYMBOL_GPL |
a2ffd275 | 155 | When: February 2008 |
b87ba0a3 GKH |
156 | Files: include/linux/usb.h, drivers/usb/core/driver.c |
157 | Why: The USB subsystem has changed a lot over time, and it has been | |
158 | possible to create userspace USB drivers using usbfs/libusb/gadgetfs | |
159 | that operate as fast as the USB bus allows. Because of this, the USB | |
160 | subsystem will not be allowing closed source kernel drivers to | |
161 | register with it, after this grace period is over. If anyone needs | |
162 | any help in converting their closed source drivers over to use the | |
163 | userspace filesystems, please contact the | |
164 | linux-usb-devel@lists.sourceforge.net mailing list, and the developers | |
165 | there will be glad to help you out. | |
166 | Who: Greg Kroah-Hartman <gregkh@suse.de> | |
167 | ||
168 | --------------------------- | |
93fac704 NP |
169 | |
170 | What: find_trylock_page | |
171 | When: January 2007 | |
172 | Why: The interface no longer has any callers left in the kernel. It | |
173 | is an odd interface (compared with other find_*_page functions), in | |
174 | that it does not take a refcount to the page, only the page lock. | |
175 | It should be replaced with find_get_page or find_lock_page if possible. | |
176 | This feature removal can be reevaluated if users of the interface | |
177 | cannot cleanly use something else. | |
178 | Who: Nick Piggin <npiggin@suse.de> | |
179 | ||
180 | --------------------------- | |
127fe6af | 181 | |
6e213616 TG |
182 | What: Interrupt only SA_* flags |
183 | When: Januar 2007 | |
184 | Why: The interrupt related SA_* flags are replaced by IRQF_* to move them | |
185 | out of the signal namespace. | |
186 | ||
187 | Who: Thomas Gleixner <tglx@linutronix.de> | |
188 | ||
189 | --------------------------- | |
5a017483 JD |
190 | |
191 | What: i2c-ite and i2c-algo-ite drivers | |
192 | When: September 2006 | |
193 | Why: These drivers never compiled since they were added to the kernel | |
194 | tree 5 years ago. This feature removal can be reevaluated if | |
195 | someone shows interest in the drivers, fixes them and takes over | |
196 | maintenance. | |
197 | http://marc.theaimsgroup.com/?l=linux-mips&m=115040510817448 | |
198 | Who: Jean Delvare <khali@linux-fr.org> | |
199 | ||
200 | --------------------------- | |
10ea6ac8 PM |
201 | |
202 | What: Bridge netfilter deferred IPv4/IPv6 output hook calling | |
203 | When: January 2007 | |
204 | Why: The deferred output hooks are a layering violation causing unusual | |
205 | and broken behaviour on bridge devices. Examples of things they | |
206 | break include QoS classifation using the MARK or CLASSIFY targets, | |
207 | the IPsec policy match and connection tracking with VLANs on a | |
208 | bridge. Their only use is to enable bridge output port filtering | |
209 | within iptables with the physdev match, which can also be done by | |
210 | combining iptables and ebtables using netfilter marks. Until it | |
211 | will get removed the hook deferral is disabled by default and is | |
212 | only enabled when needed. | |
213 | ||
214 | Who: Patrick McHardy <kaber@trash.net> | |
215 | ||
216 | --------------------------- | |
080f22c0 | 217 | |
d81d9d6b | 218 | What: PHYSDEVPATH, PHYSDEVBUS, PHYSDEVDRIVER in the uevent environment |
acbd39fb | 219 | When: October 2008 |
d81d9d6b KS |
220 | Why: The stacking of class devices makes these values misleading and |
221 | inconsistent. | |
222 | Class devices should not carry any of these properties, and bus | |
223 | devices have SUBSYTEM and DRIVER as a replacement. | |
224 | Who: Kay Sievers <kay.sievers@suse.de> | |
225 | ||
226 | --------------------------- | |
6c805d2c JD |
227 | |
228 | What: i2c-isa | |
229 | When: December 2006 | |
230 | Why: i2c-isa is a non-sense and doesn't fit in the device driver | |
231 | model. Drivers relying on it are better implemented as platform | |
232 | drivers. | |
233 | Who: Jean Delvare <khali@linux-fr.org> | |
234 | ||
235 | --------------------------- | |
31e7e1a8 | 236 | |
a3c47977 PM |
237 | What: IPv4 only connection tracking/NAT/helpers |
238 | When: 2.6.22 | |
239 | Why: The new layer 3 independant connection tracking replaces the old | |
240 | IPv4 only version. After some stabilization of the new code the | |
241 | old one will be removed. | |
242 | Who: Patrick McHardy <kaber@trash.net> | |
243 | ||
244 | --------------------------- |