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 ---------------------------
11 Files: fs/devfs/*, include/linux/devfs_fs*.h and assorted devfs
12 function calls throughout the kernel tree
13 Why: It has been unmaintained for a number of years, has unfixable
14 races, contains a naming policy within the kernel that is
15 against the LSB, and can be replaced by using udev.
16 Who: Greg Kroah-Hartman <greg@kroah.com>
18 ---------------------------
20 What: ACPI S4bios support
22 Why: Noone uses it, and it probably does not work, anyway. swsusp is
23 faster, more reliable, and people are actually using it.
24 Who: Pavel Machek <pavel@suse.cz>
26 ---------------------------
28 What: PCI Name Database (CONFIG_PCI_NAMES)
30 Why: It bloats the kernel unnecessarily, and is handled by userspace better
31 (pciutils supports it.) Will eliminate the need to try to keep the
32 pci.ids file in sync with the sf.net database all of the time.
33 Who: Greg Kroah-Hartman <gregkh@suse.de>
35 ---------------------------
37 What: io_remap_page_range() (macro or function)
39 Why: Replaced by io_remap_pfn_range() which allows more memory space
40 addressabilty (by using a pfn) and supports sparc & sparc64
41 iospace as part of the pfn.
42 Who: Randy Dunlap <rddunlap@osdl.org>
44 ---------------------------
46 What: RAW driver (CONFIG_RAW_DRIVER)
48 Why: declared obsolete since kernel 2.6.3
49 O_DIRECT can be used instead
50 Who: Adrian Bunk <bunk@stusta.de>
52 ---------------------------
54 What: register_ioctl32_conversion() / unregister_ioctl32_conversion()
56 Why: Replaced by ->compat_ioctl in file_operations and other method
58 Who: Andi Kleen <ak@muc.de>, Christoph Hellwig <hch@lst.de>
60 ---------------------------
62 What: RCU API moves to EXPORT_SYMBOL_GPL
64 Files: include/linux/rcupdate.h, kernel/rcupdate.c
65 Why: Outside of Linux, the only implementations of anything even
66 vaguely resembling RCU that I am aware of are in DYNIX/ptx,
67 VM/XA, Tornado, and K42. I do not expect anyone to port binary
68 drivers or kernel modules from any of these, since the first two
69 are owned by IBM and the last two are open-source research OSes.
70 So these will move to GPL after a grace period to allow
71 people, who might be using implementations that I am not aware
72 of, to adjust to this upcoming change.
73 Who: Paul E. McKenney <paulmck@us.ibm.com>
75 ---------------------------
77 What: remove verify_area()
79 Files: Various uaccess.h headers.
80 Why: Deprecated and redundant. access_ok() should be used instead.
81 Who: Jesper Juhl <juhl-lkml@dif.dk>
83 ---------------------------
85 What: IEEE1394 Audio and Music Data Transmission Protocol driver,
86 Connection Management Procedures driver
88 Files: drivers/ieee1394/{amdtp,cmp}*
89 Why: These are incomplete, have never worked, and are better implemented
90 in userland via raw1394 (see http://freebob.sourceforge.net/ for
92 Who: Jody McIntyre <scjody@steamballoon.com>
94 ---------------------------
96 What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN
98 Why: Deprecated in favour of the new ioctl-based rawiso interface, which is
99 more efficient. You should really be using libraw1394 for raw1394
101 Who: Jody McIntyre <scjody@steamballoon.com>
103 ---------------------------
105 What: register_serial/unregister_serial
107 Why: This interface does not allow serial ports to be registered against
108 a struct device, and as such does not allow correct power management
109 of such ports. 8250-based ports should use serial8250_register_port
110 and serial8250_unregister_port, or platform devices instead.
111 Who: Russell King <rmk@arm.linux.org.uk>
113 ---------------------------
115 What: i2c sysfs name change: in1_ref, vid deprecated in favour of cpu0_vid
117 Files: drivers/i2c/chips/adm1025.c, drivers/i2c/chips/adm1026.c
118 Why: Match the other drivers' name for the same function, duplicate names
119 will be available until removal of old names.
120 Who: Grant Coady <gcoady@gmail.com>
122 ---------------------------
124 What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl])
126 Files: drivers/pcmcia/: pcmcia_ioctl.c
127 Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a
128 normal hotpluggable bus, and with it using the default kernel
129 infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA
130 control ioctl needed by cardmgr and cardctl from pcmcia-cs is
131 unnecessary, and makes further cleanups and integration of the
132 PCMCIA subsystem into the Linux kernel device driver model more
133 difficult. The features provided by cardmgr and cardctl are either
134 handled by the kernel itself now or are available in the new
135 pcmciautils package available at
136 http://kernel.org/pub/linux/utils/kernel/pcmcia/
137 Who: Dominik Brodowski <linux@brodo.de>