Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Pavel Machek | 1ebfd79 | 2006-08-30 13:50:27 -0700 | [diff] [blame] | 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 | |
Adrian Bunk | 98e7f29 | 2005-06-25 14:59:37 -0700 | [diff] [blame] | 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 | |
Jody McIntyre | a1446c7 | 2005-05-16 21:53:59 -0700 | [diff] [blame] | 32 | What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN |
Stefan Richter | 9868e0e | 2006-11-20 00:05:05 +0100 | [diff] [blame] | 33 | When: June 2007 |
| 34 | Why: Deprecated in favour of the more efficient and robust rawiso interface. |
| 35 | Affected are applications which use the deprecated part of libraw1394 |
| 36 | (raw1394_iso_write, raw1394_start_iso_write, raw1394_start_iso_rcv, |
| 37 | raw1394_stop_iso_rcv) or bypass libraw1394. |
| 38 | Who: Dan Dennedy <dan@dennedy.org>, Stefan Richter <stefanr@s5r6.in-berlin.de> |
Grant Coady | 937df8d | 2005-05-12 11:59:29 +1000 | [diff] [blame] | 39 | |
| 40 | --------------------------- |
| 41 | |
Stefan Richter | 861646f | 2006-11-20 00:07:26 +0100 | [diff] [blame] | 42 | What: dv1394 driver (CONFIG_IEEE1394_DV1394) |
| 43 | When: June 2007 |
| 44 | Why: Replaced by raw1394 + userspace libraries, notably libiec61883. This |
| 45 | shift of application support has been indicated on www.linux1394.org |
| 46 | and developers' mailinglists for quite some time. Major applications |
| 47 | have been converted, with the exception of ffmpeg and hence xine. |
| 48 | Piped output of dvgrab2 is a partial equivalent to dv1394. |
| 49 | Who: Dan Dennedy <dan@dennedy.org>, Stefan Richter <stefanr@s5r6.in-berlin.de> |
| 50 | |
| 51 | --------------------------- |
| 52 | |
Stefan Richter | e9429df | 2006-11-19 23:03:09 +0100 | [diff] [blame] | 53 | What: ieee1394 core's unused exports (CONFIG_IEEE1394_EXPORT_FULL_API) |
| 54 | When: January 2007 |
Stefan Richter | 3015c73 | 2006-11-24 20:19:09 +0100 | [diff] [blame] | 55 | Why: There are no projects known to use these exported symbols, except |
| 56 | dfg1394 (uses one symbol whose functionality is core-internal now). |
Stefan Richter | e9429df | 2006-11-19 23:03:09 +0100 | [diff] [blame] | 57 | Who: Stefan Richter <stefanr@s5r6.in-berlin.de> |
| 58 | |
| 59 | --------------------------- |
| 60 | |
Stefan Richter | 4e834da | 2006-11-19 23:04:31 +0100 | [diff] [blame] | 61 | What: ieee1394's *_oui sysfs attributes (CONFIG_IEEE1394_OUI_DB) |
| 62 | When: January 2007 |
| 63 | Files: drivers/ieee1394/: oui.db, oui2c.sh |
| 64 | Why: big size, little value |
| 65 | Who: Stefan Richter <stefanr@s5r6.in-berlin.de> |
Grant Coady | 937df8d | 2005-05-12 11:59:29 +1000 | [diff] [blame] | 66 | |
| 67 | --------------------------- |
| 68 | |
Mauro Carvalho Chehab | 875c296 | 2005-11-08 21:38:53 -0800 | [diff] [blame] | 69 | What: Video4Linux API 1 ioctls and video_decoder.h from Video devices. |
Mauro Carvalho Chehab | 48c06d5 | 2006-09-06 09:29:00 -0300 | [diff] [blame] | 70 | When: December 2006 |
Mauro Carvalho Chehab | 875c296 | 2005-11-08 21:38:53 -0800 | [diff] [blame] | 71 | Why: V4L1 AP1 was replaced by V4L2 API. during migration from 2.4 to 2.6 |
| 72 | series. The old API have lots of drawbacks and don't provide enough |
| 73 | means to work with all video and audio standards. The newer API is |
| 74 | already available on the main drivers and should be used instead. |
| 75 | Newer drivers should use v4l_compat_translate_ioctl function to handle |
| 76 | old calls, replacing to newer ones. |
| 77 | Decoder iocts are using internally to allow video drivers to |
| 78 | communicate with video decoders. This should also be improved to allow |
| 79 | V4L2 calls being translated into compatible internal ioctls. |
| 80 | Who: Mauro Carvalho Chehab <mchehab@brturbo.com.br> |
| 81 | |
| 82 | --------------------------- |
| 83 | |
Dominik Brodowski | bf45d9b0 | 2005-07-07 17:58:58 -0700 | [diff] [blame] | 84 | What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl]) |
| 85 | When: November 2005 |
| 86 | Files: drivers/pcmcia/: pcmcia_ioctl.c |
| 87 | Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a |
| 88 | normal hotpluggable bus, and with it using the default kernel |
| 89 | infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA |
| 90 | control ioctl needed by cardmgr and cardctl from pcmcia-cs is |
| 91 | unnecessary, and makes further cleanups and integration of the |
| 92 | PCMCIA subsystem into the Linux kernel device driver model more |
| 93 | difficult. The features provided by cardmgr and cardctl are either |
| 94 | handled by the kernel itself now or are available in the new |
| 95 | pcmciautils package available at |
| 96 | http://kernel.org/pub/linux/utils/kernel/pcmcia/ |
| 97 | Who: Dominik Brodowski <linux@brodo.de> |
Harald Welte | 7af4cc3 | 2005-08-09 19:44:15 -0700 | [diff] [blame] | 98 | |
| 99 | --------------------------- |
| 100 | |
Christoph Hellwig | ac51589 | 2006-03-24 03:18:22 -0800 | [diff] [blame] | 101 | What: remove EXPORT_SYMBOL(kernel_thread) |
| 102 | When: August 2006 |
| 103 | Files: arch/*/kernel/*_ksyms.c |
| 104 | Why: kernel_thread is a low-level implementation detail. Drivers should |
| 105 | use the <linux/kthread.h> API instead which shields them from |
| 106 | implementation details and provides a higherlevel interface that |
| 107 | prevents bugs and code duplication |
| 108 | Who: Christoph Hellwig <hch@lst.de> |
| 109 | |
| 110 | --------------------------- |
| 111 | |
Ingo Molnar | a9df3d0 | 2006-01-14 13:21:33 -0800 | [diff] [blame] | 112 | What: CONFIG_FORCED_INLINING |
| 113 | When: June 2006 |
| 114 | Why: Config option is there to see if gcc is good enough. (in january |
| 115 | 2006). If it is, the behavior should just be the default. If it's not, |
| 116 | the option should just go away entirely. |
| 117 | Who: Arjan van de Ven |
| 118 | |
| 119 | --------------------------- |
| 120 | |
Bunk | c0d3c0c | 2006-02-07 01:43:31 -0500 | [diff] [blame] | 121 | What: eepro100 network driver |
| 122 | When: January 2007 |
| 123 | Why: replaced by the e100 driver |
| 124 | Who: Adrian Bunk <bunk@stusta.de> |
Jeff Garzik | 3c9b3a8 | 2006-02-07 01:47:12 -0500 | [diff] [blame] | 125 | |
| 126 | --------------------------- |
| 127 | |
Adrian Bunk | 1e5f5e5 | 2006-08-31 21:27:46 -0700 | [diff] [blame] | 128 | What: drivers depending on OSS_OBSOLETE_DRIVER |
| 129 | When: options in 2.6.20, code in 2.6.22 |
| 130 | Why: OSS drivers with ALSA replacements |
| 131 | Who: Adrian Bunk <bunk@stusta.de> |
| 132 | |
| 133 | --------------------------- |
| 134 | |
Richard Knutsson | 051d989 | 2005-12-03 02:34:12 +0100 | [diff] [blame] | 135 | What: pci_module_init(driver) |
| 136 | When: January 2007 |
| 137 | Why: Is replaced by pci_register_driver(pci_driver). |
| 138 | Who: Richard Knutsson <ricknu-0@student.ltu.se> and Greg Kroah-Hartman <gregkh@suse.de> |
Jean Delvare | c5e3fbf | 2006-01-18 22:39:48 +0100 | [diff] [blame] | 139 | |
| 140 | --------------------------- |
| 141 | |
Thomas Gleixner | 7d99b7d | 2006-03-25 03:06:35 -0800 | [diff] [blame] | 142 | What: Usage of invalid timevals in setitimer |
| 143 | When: March 2007 |
| 144 | Why: POSIX requires to validate timevals in the setitimer call. This |
| 145 | was never done by Linux. The invalid (e.g. negative timevals) were |
| 146 | silently converted to more or less random timeouts and intervals. |
| 147 | Until the removal a per boot limited number of warnings is printed |
| 148 | and the timevals are sanitized. |
| 149 | |
| 150 | Who: Thomas Gleixner <tglx@linutronix.de> |
| 151 | |
| 152 | --------------------------- |
| 153 | |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 154 | What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports |
| 155 | (temporary transition config option provided until then) |
| 156 | The transition config option will also be removed at the same time. |
| 157 | When: before 2.6.19 |
| 158 | Why: Unused symbols are both increasing the size of the kernel binary |
| 159 | and are often a sign of "wrong API" |
| 160 | Who: Arjan van de Ven <arjan@linux.intel.com> |
| 161 | |
| 162 | --------------------------- |
| 163 | |
Greg Kroah-Hartman | fa67576 | 2006-02-22 09:39:02 -0800 | [diff] [blame] | 164 | What: mount/umount uevents |
| 165 | When: February 2007 |
| 166 | Why: These events are not correct, and do not properly let userspace know |
| 167 | when a file system has been mounted or unmounted. Userspace should |
| 168 | poll the /proc/mounts file instead to detect this properly. |
| 169 | Who: Greg Kroah-Hartman <gregkh@suse.de> |
Ralf Baechle | cf028d1 | 2006-03-02 16:50:12 +0000 | [diff] [blame] | 170 | |
| 171 | --------------------------- |
| 172 | |
Greg Kroah-Hartman | b87ba0a | 2006-03-20 13:17:13 -0800 | [diff] [blame] | 173 | What: USB driver API moves to EXPORT_SYMBOL_GPL |
Matt LaPlante | a2ffd27 | 2006-10-03 22:49:15 +0200 | [diff] [blame] | 174 | When: February 2008 |
Greg Kroah-Hartman | b87ba0a | 2006-03-20 13:17:13 -0800 | [diff] [blame] | 175 | Files: include/linux/usb.h, drivers/usb/core/driver.c |
| 176 | Why: The USB subsystem has changed a lot over time, and it has been |
| 177 | possible to create userspace USB drivers using usbfs/libusb/gadgetfs |
| 178 | that operate as fast as the USB bus allows. Because of this, the USB |
| 179 | subsystem will not be allowing closed source kernel drivers to |
| 180 | register with it, after this grace period is over. If anyone needs |
| 181 | any help in converting their closed source drivers over to use the |
| 182 | userspace filesystems, please contact the |
| 183 | linux-usb-devel@lists.sourceforge.net mailing list, and the developers |
| 184 | there will be glad to help you out. |
| 185 | Who: Greg Kroah-Hartman <gregkh@suse.de> |
| 186 | |
| 187 | --------------------------- |
Nick Piggin | 93fac70 | 2006-03-31 02:29:56 -0800 | [diff] [blame] | 188 | |
| 189 | What: find_trylock_page |
| 190 | When: January 2007 |
| 191 | Why: The interface no longer has any callers left in the kernel. It |
| 192 | is an odd interface (compared with other find_*_page functions), in |
| 193 | that it does not take a refcount to the page, only the page lock. |
| 194 | It should be replaced with find_get_page or find_lock_page if possible. |
| 195 | This feature removal can be reevaluated if users of the interface |
| 196 | cannot cleanly use something else. |
| 197 | Who: Nick Piggin <npiggin@suse.de> |
| 198 | |
| 199 | --------------------------- |
Ralf Baechle | 127fe6a | 2006-06-28 12:28:27 +0100 | [diff] [blame] | 200 | |
Thomas Gleixner | 6e21361 | 2006-07-01 19:29:03 -0700 | [diff] [blame] | 201 | What: Interrupt only SA_* flags |
| 202 | When: Januar 2007 |
| 203 | Why: The interrupt related SA_* flags are replaced by IRQF_* to move them |
| 204 | out of the signal namespace. |
| 205 | |
| 206 | Who: Thomas Gleixner <tglx@linutronix.de> |
| 207 | |
| 208 | --------------------------- |
Jean Delvare | 5a01748 | 2006-07-01 17:13:37 +0200 | [diff] [blame] | 209 | |
Kay Sievers | d81d9d6 | 2006-08-13 06:17:09 +0200 | [diff] [blame] | 210 | What: PHYSDEVPATH, PHYSDEVBUS, PHYSDEVDRIVER in the uevent environment |
Dominik Brodowski | acbd39f | 2006-09-30 22:41:43 -0400 | [diff] [blame] | 211 | When: October 2008 |
Kay Sievers | d81d9d6 | 2006-08-13 06:17:09 +0200 | [diff] [blame] | 212 | Why: The stacking of class devices makes these values misleading and |
| 213 | inconsistent. |
| 214 | Class devices should not carry any of these properties, and bus |
| 215 | devices have SUBSYTEM and DRIVER as a replacement. |
| 216 | Who: Kay Sievers <kay.sievers@suse.de> |
| 217 | |
| 218 | --------------------------- |
Jean Delvare | 6c805d2 | 2006-08-13 23:45:52 +0200 | [diff] [blame] | 219 | |
| 220 | What: i2c-isa |
| 221 | When: December 2006 |
| 222 | Why: i2c-isa is a non-sense and doesn't fit in the device driver |
| 223 | model. Drivers relying on it are better implemented as platform |
| 224 | drivers. |
| 225 | Who: Jean Delvare <khali@linux-fr.org> |
| 226 | |
| 227 | --------------------------- |
Jeff Garzik | 31e7e1a | 2006-10-03 01:13:54 -0700 | [diff] [blame] | 228 | |
David Brownell | b119dc3 | 2007-01-04 13:07:04 +0100 | [diff] [blame^] | 229 | What: i2c_adapter.dev |
| 230 | i2c_adapter.list |
| 231 | When: July 2007 |
| 232 | Why: Superfluous, given i2c_adapter.class_dev: |
| 233 | * The "dev" was a stand-in for the physical device node that legacy |
| 234 | drivers would not have; but now it's almost always present. Any |
| 235 | remaining legacy drivers must upgrade (they now trigger warnings). |
| 236 | * The "list" duplicates class device children. |
| 237 | The delay in removing this is so upgraded lm_sensors and libsensors |
| 238 | can get deployed. (Removal causes minor changes in the sysfs layout, |
| 239 | notably the location of the adapter type name and parenting the i2c |
| 240 | client hardware directly from their controller.) |
| 241 | Who: Jean Delvare <khali@linux-fr.org>, |
| 242 | David Brownell <dbrownell@users.sourceforge.net> |
| 243 | |
| 244 | --------------------------- |
| 245 | |
Patrick McHardy | a3c4797 | 2006-12-02 22:11:01 -0800 | [diff] [blame] | 246 | What: IPv4 only connection tracking/NAT/helpers |
| 247 | When: 2.6.22 |
| 248 | Why: The new layer 3 independant connection tracking replaces the old |
| 249 | IPv4 only version. After some stabilization of the new code the |
| 250 | old one will be removed. |
| 251 | Who: Patrick McHardy <kaber@trash.net> |
Jeff Garzik | 31e7e1a | 2006-10-03 01:13:54 -0700 | [diff] [blame] | 252 | |
| 253 | --------------------------- |
Venkatesh Pallipadi | 83d0515 | 2006-10-03 12:34:28 -0700 | [diff] [blame] | 254 | |
| 255 | What: ACPI hooks (X86_SPEEDSTEP_CENTRINO_ACPI) in speedstep-centrino driver |
| 256 | When: December 2006 |
| 257 | Why: Speedstep-centrino driver with ACPI hooks and acpi-cpufreq driver are |
| 258 | functionally very much similar. They talk to ACPI in same way. Only |
| 259 | difference between them is the way they do frequency transitions. |
| 260 | One uses MSRs and the other one uses IO ports. Functionaliy of |
| 261 | speedstep_centrino with ACPI hooks is now merged into acpi-cpufreq. |
| 262 | That means one common driver will support all Intel Enhanced Speedstep |
| 263 | capable CPUs. That means less confusion over name of |
| 264 | speedstep-centrino driver (with that driver supposed to be used on |
| 265 | non-centrino platforms). That means less duplication of code and |
| 266 | less maintenance effort and no possibility of these two drivers |
| 267 | going out of sync. |
| 268 | Current users of speedstep_centrino with ACPI hooks are requested to |
| 269 | switch over to acpi-cpufreq driver. speedstep-centrino will continue |
| 270 | to work using older non-ACPI static table based scheme even after this |
| 271 | date. |
| 272 | |
| 273 | Who: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> |
| 274 | |
| 275 | --------------------------- |