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592a607bbc
linux/drivers/macintosh
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Benjamin Herrenschmidt 592a607bbc [POWERPC] Disable G5 NAP mode during SMU commands on U3 
It appears that with the U3 northbridge, if the processor is in NAP
mode the whole time while waiting for an SMU command to complete,
then the SMU will fail.  It could be related to the weird backward
mechanism the SMU uses to get to system memory via i2c to the
northbridge that doesn't operate properly when the said bridge is
in napping along with the CPU.  That is on U3 at least, U4 doesn't
seem to be affected.

This didn't show before NO_HZ as the timer wakeup was enough to make
it work it seems, but that is no longer the case.

This fixes it by disabling NAP mode on those machines while
an SMU command is in flight.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-08 19:52:35 +11:00
..
adb-iop.c [POWERPC] Remove old includes from arch/ppc 2007-08-22 22:39:35 -05:00
adb.c ADB: Add missing #include <linux/platform_device.h> 2008-02-04 07:51:23 -08:00
adbhid.c macintosh: fix fabrication of caplock key events 2008-01-14 08:52:22 -08:00
ans-lcd.c [POWERPC] Copy over headers from arch/ppc to arch/powerpc that we need 2007-08-22 22:43:29 -05:00
ans-lcd.h [POWERPC] Copy over headers from arch/ppc to arch/powerpc that we need 2007-08-22 22:43:29 -05:00
apm_emu.c [POWERPC] apm_emu: Use generic apm-emulation 2007-05-02 16:42:19 +10:00
Kconfig Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2007-10-12 21:27:47 -04:00
mac_hid.c get rid of input BIT* duplicate defines 2007-10-19 11:53:42 -07:00
macio_asic.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
macio_sysfs.c [POWERPC] macintosh: Use common modalias generation for macio_sysfs 2007-05-07 20:31:15 +10:00
macio-adb.c [POWERPC] Remove find_compatible_devices 2007-04-24 22:08:57 +10:00
Makefile [POWERPC] Xserve cpu-meter driver 2006-12-04 20:39:30 +11:00
mediabay.c ppc: fix #ifdef-s in mediabay driver (take 2) 2008-02-06 02:57:50 +01:00
nvram.c [PATCH] mark struct file_operations const 4 2007-02-12 09:48:45 -08:00
rack-meter.c [POWERPC] Clean up duplicate includes in drivers/macintosh/ 2007-07-22 21:31:00 +10:00
smu.c [POWERPC] Disable G5 NAP mode during SMU commands on U3 2008-02-08 19:52:35 +11:00
therm_adt746x.c [POWERPC] therm_adt746x: Eliminate some build warnings 2008-01-17 14:57:31 +11:00
therm_pm72.c [POWERPC] therm_pm72: Suppress some compile warnings 2008-01-17 14:57:12 +11:00
therm_pm72.h
therm_windtunnel.c Merge branch 'linux-2.6' 2008-01-31 11:25:51 +11:00
via-cuda.c CUDA ADB fixes 2007-05-04 17:59:07 -07:00
via-macii.c mac68k: macii adb comment correction 2008-02-05 09:44:24 -08:00
via-maciisi.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
via-pmu68k.c remove dead code in via-pmu68k 2007-08-22 19:52:45 -07:00
via-pmu-backlight.c [POWERPC] Fix for via-pmu based backlight control 2007-12-21 22:14:07 +11:00
via-pmu-event.c
via-pmu-event.h
via-pmu-led.c [POWERPC] via-pmu: remove LED sleep notifier 2007-05-08 11:54:19 +10:00
via-pmu.c Merge branch 'linux-2.6' 2008-01-31 11:25:51 +11:00
windfarm_core.c [POWERPC] windfarm: Fix windfarm thread freezer interaction 2007-11-08 14:15:34 +11:00
windfarm_cpufreq_clamp.c
windfarm_lm75_sensor.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
windfarm_max6690_sensor.c [POWERPC] Rename device_is_compatible to of_device_is_compatible 2007-05-07 20:31:14 +10:00
windfarm_pid.c
windfarm_pid.h
windfarm_pm81.c [PATCH] powerpc: windfarm shall request it's sub modules 2006-11-15 19:57:12 -08:00
windfarm_pm91.c [PATCH] powerpc: windfarm shall request it's sub modules 2006-11-15 19:57:12 -08:00
windfarm_pm112.c [PATCH] powerpc: windfarm shall request it's sub modules 2006-11-15 19:57:12 -08:00
windfarm_smu_controls.c [POWERPC] Rename device_is_compatible to of_device_is_compatible 2007-05-07 20:31:14 +10:00
windfarm_smu_sat.c [POWERPC] Comment out a currently unused function 2007-08-17 11:01:59 +10:00
windfarm_smu_sensors.c [POWERPC] Rename get_property to of_get_property: partial drivers 2007-04-27 15:51:56 +10:00
windfarm.h