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@@ -259,3 +259,25 @@ Why: The new layer 3 independant connection tracking replaces the old
259Who: Patrick McHardy <kaber@trash.net> 259Who: Patrick McHardy <kaber@trash.net>
260 260
261--------------------------- 261---------------------------
262
263What: ACPI hooks (X86_SPEEDSTEP_CENTRINO_ACPI) in speedstep-centrino driver
264When: December 2006
265Why: Speedstep-centrino driver with ACPI hooks and acpi-cpufreq driver are
266 functionally very much similar. They talk to ACPI in same way. Only
267 difference between them is the way they do frequency transitions.
268 One uses MSRs and the other one uses IO ports. Functionaliy of
269 speedstep_centrino with ACPI hooks is now merged into acpi-cpufreq.
270 That means one common driver will support all Intel Enhanced Speedstep
271 capable CPUs. That means less confusion over name of
272 speedstep-centrino driver (with that driver supposed to be used on
273 non-centrino platforms). That means less duplication of code and
274 less maintenance effort and no possibility of these two drivers
275 going out of sync.
276 Current users of speedstep_centrino with ACPI hooks are requested to
277 switch over to acpi-cpufreq driver. speedstep-centrino will continue
278 to work using older non-ACPI static table based scheme even after this
279 date.
280
281Who: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
282
283---------------------------