---------------------------
+What: x86 floppy disable_hlt
+When: 2012
+Why: ancient workaround of dubious utility clutters the
+ code used by everybody else.
+Who: Len Brown <len.brown@intel.com>
+
+---------------------------
+
+What: CONFIG_APM_CPU_IDLE, and its ability to call APM BIOS in idle
+When: 2012
+Why: This optional sub-feature of APM is of dubious reliability,
+ and ancient APM laptops are likely better served by calling HLT.
+ Deleting CONFIG_APM_CPU_IDLE allows x86 to stop exporting
+ the pm_idle function pointer to modules.
+Who: Len Brown <len.brown@intel.com>
+
+----------------------------
+
+What: x86_32 "no-hlt" cmdline param
+When: 2012
+Why: remove a branch from idle path, simplify code used by everybody.
+ This option disabled the use of HLT in idle and machine_halt()
+ for hardware that was flakey 15-years ago. Today we have
+ "idle=poll" that removed HLT from idle, and so if such a machine
+ is still running the upstream kernel, "idle=poll" is likely sufficient.
+Who: Len Brown <len.brown@intel.com>
+
+----------------------------
+
+What: x86 "idle=mwait" cmdline param
+When: 2012
+Why: simplify x86 idle code
+Who: Len Brown <len.brown@intel.com>
+
+----------------------------
+
What: PRISM54
When: 2.6.34
---------------------------
-What: AR9170USB
-When: 2.6.40
-
-Why: This driver is deprecated and the firmware is no longer
- maintained. The replacement driver "carl9170" has been
- around for a while, so the devices are still supported.
-
-Who: Christian Lamparter <chunkeey@googlemail.com>
-
----------------------------
-
What: IRQF_SAMPLE_RANDOM
Check: IRQF_SAMPLE_RANDOM
When: July 2009
What: CONFIG_ACPI_PROCFS_POWER
When: 2.6.39
Why: sysfs I/F for ACPI power devices, including AC and Battery,
- has been working in upstream kenrel since 2.6.24, Sep 2007.
+ has been working in upstream kernel since 2.6.24, Sep 2007.
In 2.6.37, we make the sysfs I/F always built in and this option
disabled by default.
Remove this option and the ACPI power procfs interface in 2.6.39.
---------------------------
-What: /sys/o2cb symlink
-When: January 2010
-Why: /sys/fs/o2cb is the proper location for this information - /sys/o2cb
- exists as a symlink for backwards compatibility for old versions of
- ocfs2-tools. 2 years should be sufficient time to phase in new versions
- which know to look in /sys/fs/o2cb.
-Who: ocfs2-devel@oss.oracle.com
-
----------------------------
-
What: Ability for non root users to shm_get hugetlb pages based on mlock
resource limits
When: 2.6.31
----------------------------
-What: capifs
-When: February 2011
-Files: drivers/isdn/capi/capifs.*
-Why: udev fully replaces this special file system that only contains CAPI
- NCCI TTY device nodes. User space (pppdcapiplugin) works without
- noticing the difference.
-Who: Jan Kiszka <jan.kiszka@web.de>
-
-----------------------------
-
What: KVM paravirt mmu host support
When: January 2011
Why: The paravirt mmu host support is slower than non-paravirt mmu, both
----------------------------
-What: The acpi_sleep=s4_nonvs command line option
-When: 2.6.37
-Files: arch/x86/kernel/acpi/sleep.c
-Why: superseded by acpi_sleep=nonvs
-Who: Rafael J. Wysocki <rjw@sisk.pl>
-
-----------------------------
-
What: PCI DMA unmap state API
When: August 2012
Why: PCI DMA unmap state API (include/linux/pci-dma.h) was replaced
----------------------------
-What: namespace cgroup (ns_cgroup)
-When: 2.6.38
-Why: The ns_cgroup leads to some problems:
- * cgroup creation is out-of-control
- * cgroup name can conflict when pids are looping
- * it is not possible to have a single process handling
- a lot of namespaces without falling in a exponential creation time
- * we may want to create a namespace without creating a cgroup
-
- The ns_cgroup is replaced by a compatibility flag 'clone_children',
- where a newly created cgroup will copy the parent cgroup values.
- The userspace has to manually create a cgroup and add a task to
- the 'tasks' file.
-Who: Daniel Lezcano <daniel.lezcano@free.fr>
-
-----------------------------
-
What: iwlwifi disable_hw_scan module parameters
When: 2.6.40
Why: Hareware scan is the prefer method for iwlwifi devices for
Who: Jean Delvare <khali@linux-fr.org>
----------------------------
+
+What: Support for UVCIOC_CTRL_ADD in the uvcvideo driver
+When: 2.6.42
+Why: The information passed to the driver by this ioctl is now queried
+ dynamically from the device.
+Who: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+
+----------------------------
+
+What: Support for UVCIOC_CTRL_MAP_OLD in the uvcvideo driver
+When: 2.6.42
+Why: Used only by applications compiled against older driver versions.
+ Superseded by UVCIOC_CTRL_MAP which supports V4L2 menu controls.
+Who: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+
+----------------------------
+
+What: Support for UVCIOC_CTRL_GET and UVCIOC_CTRL_SET in the uvcvideo driver
+When: 2.6.42
+Why: Superseded by the UVCIOC_CTRL_QUERY ioctl.
+Who: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+
+----------------------------
git.openpandora.org / pandora-kernel.git / blobdiff