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Benjamin Herrenschmidt 0086b5ec78 [PATCH] ppc32: Fix nasty sleep/wakeup problem ... Despite all the care lately in making the powermac sleep/wakeup as robust as possible, there is still a nasty related to the use of cpufreq on PMU based machines. Unfortunately, it affects paulus old powerbook so I have to fix it :) We didn't manage to understand what is precisely going on, it leads to memory corruption and might have to do with RAM not beeing properly refreshed when a cpufreq transition is done right before the sleep. The best workaround (and less intrusive at this point) we could come up with is included in this patch. We basically do _not_ force a switch to high speed on suspend anymore (that is what is causing the problem) on those machines. We still force a speed switch on wakeup (since we don't know what speed we are coming back from sleep at, and that seems to work fine). Since, during this short interval, the actual CPU speed might be incorrect, we also hack around by multiplying loops_per_jiffy by 2 (max speed factor on those machines) during early wakeup stage to make sure udelay's during that time aren't too short. For after 2.6.12, we'll change udelay implementation to use the CPU timebase (which is always constant) instead like we do on ppc64 and thus get rid of all those problems. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		20 years ago
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Kconfig	Linux-2.6.12-rc2	20 years ago
Makefile	Linux-2.6.12-rc2	20 years ago
adb-iop.c	Linux-2.6.12-rc2	20 years ago
adb.c	Linux-2.6.12-rc2	20 years ago
adbhid.c	[PATCH] macintosh/adbhid.c: adb buttons support for aluminium PowerBook G4	20 years ago
ans-lcd.c	Linux-2.6.12-rc2	20 years ago
apm_emu.c	Linux-2.6.12-rc2	20 years ago
mac_hid.c	Linux-2.6.12-rc2	20 years ago
macio-adb.c	Linux-2.6.12-rc2	20 years ago
macio_asic.c	[PATCH] fix u32 vs. pm_message_t in drivers/macintosh	20 years ago
macserial.c	Linux-2.6.12-rc2	20 years ago
macserial.h	Linux-2.6.12-rc2	20 years ago
mediabay.c	[PATCH] fix u32 vs. pm_message_t in drivers/macintosh	20 years ago
nvram.c	Linux-2.6.12-rc2	20 years ago
smu.c	Linux-2.6.12-rc2	20 years ago
therm_adt746x.c	[PATCH] therm_adt746x: show correct sensor locations	20 years ago
therm_pm72.c	Linux-2.6.12-rc2	20 years ago
therm_pm72.h	Linux-2.6.12-rc2	20 years ago
therm_windtunnel.c	Linux-2.6.12-rc2	20 years ago
via-cuda.c	Linux-2.6.12-rc2	20 years ago
via-macii.c	Linux-2.6.12-rc2	20 years ago
via-maciisi.c	Linux-2.6.12-rc2	20 years ago
via-pmu.c	[PATCH] ppc32: Fix nasty sleep/wakeup problem	20 years ago
via-pmu68k.c	Linux-2.6.12-rc2	20 years ago