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0213df7431
linux/arch/i386/kernel
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Dave Jones 0213df7431 [PATCH] cpufreq: fix pending powernow timer stuck condition 
AMD recently discovered that on some hardware, there is a race condition
possible when a C-state change request goes onto the bus at the same
time as a P-state change request.

Both requests happen, but the southbridge hardware only acknowledges the
C-state change.  The PowerNow! driver is then stuck in a loop, waiting
for the P-state change acknowledgement.  The driver eventually times
out, but can no longer perform P-state changes.

It turns out the solution is to resend the P-state change, which the
southbridge will acknowledge normally.

Thanks to Johannes Winkelmann for reporting this and testing the fix.

Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-21 14:28:58 -07:00
..
acpi [PATCH] i386: include linux/irq.h rather than asm/hw_irq.h 2005-09-30 10:58:37 -07:00
cpu [PATCH] cpufreq: fix pending powernow timer stuck condition 2005-10-21 14:28:58 -07:00
timers [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
apic.c [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
apm.c [PATCH] APM: Remove redundant call to set_cpus_allowed 2005-07-26 14:35:45 -07:00
asm-offsets.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bootflag.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpuid.c [PATCH] class: convert arch/* to use the new class api instead of class_simple 2005-06-20 15:15:09 -07:00
crash.c [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
dmi_scan.c [PATCH] fix: dmi_check_system 2005-09-07 16:57:44 -07:00
doublefault.c [PATCH] i386: inline assembler: cleanup and encapsulate descriptor and task register management 2005-09-05 00:06:11 -07:00
early_printk.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
efi_stub.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
efi.c [PATCH] i386: inline assembler: cleanup and encapsulate descriptor and task register management 2005-09-05 00:06:11 -07:00
entry.S [PATCH] i386: Don't miss pending signals returning to user mode after signal processing 2005-09-12 07:52:16 -07:00
head.S kbuild: full dependency check on asm-offsets.h 2005-09-09 19:28:28 +02:00
i386_ksyms.c [PATCH] Remove i386_ksyms.c, almost. 2005-06-23 09:45:11 -07:00
i387.c x86: make restore_fpu() use alternative assembler instructions 2005-07-22 16:06:16 -04:00
i8237.c [PATCH] ISA DMA suspend for i386 2005-09-05 00:06:14 -07:00
i8259.c [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
init_task.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
io_apic.c [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
ioport.c [PATCH] x86: make IOPL explicit 2005-09-05 00:06:12 -07:00
irq.c [PATCH] cpu state clean after hot remove 2005-06-25 16:24:30 -07:00
kprobes.c [PATCH] kprobes: fix bug when probed on task and isr functions 2005-09-07 16:58:01 -07:00
ldt.c [PATCH] x86: introduce a write acessor for updating the current LDT 2005-09-05 00:06:13 -07:00
machine_kexec.c [PATCH] x86: more asm cleanups 2005-09-05 00:06:12 -07:00
Makefile Merge linux-2.6 with linux-acpi-2.6 2005-09-08 01:45:47 -04:00
mca.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
microcode.c [PATCH] i386: cleanup serialize msr 2005-09-05 00:06:11 -07:00
module.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mpparse.c [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
msr.c [PATCH] x86: more asm cleanups 2005-09-05 00:06:12 -07:00
nmi.c [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
numaq.c [PATCH] re-disable TSC on NUMAQ 2005-07-28 21:46:05 -07:00
pci-dma.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
process.c [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
ptrace.c [PATCH] i386: seccomp fix for auditing/ptrace 2005-09-09 13:57:30 -07:00
quirks.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
reboot_fixups.c [PATCH] x86 reboot: Add reboot fixup for gx1/cs5530a 2005-05-01 08:58:49 -07:00
reboot.c [PATCH] arch/i386: Replace custom macro with isdigit() 2005-09-13 08:22:33 -07:00
relocate_kernel.S [PATCH] kexec: x86 kexec core 2005-06-25 16:24:49 -07:00
scx200.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
semaphore.c [PATCH] unify x86/x86-64 semaphore code 2005-09-05 00:06:14 -07:00
setup.c [PATCH] Even more fallout from ATI Xpress timer workaround 2005-09-13 15:07:06 -07:00
sigframe.h [PATCH] __user annotations for pointers in i386 sigframe 2005-09-09 10:31:59 -07:00
signal.c [PATCH] i386: fix stack alignment for signal handlers 2005-10-10 08:45:06 -07:00
smp.c [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
smpboot.c [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
srat.c [PATCH] x86-64: Use ACPI PXM to parse PCI<->node assignments 2005-09-12 10:49:57 -07:00
summit.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sys_i386.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
syscall_table.S [PATCH] remove sys_set_zone_reclaim() 2005-08-01 10:03:56 -07:00
sysenter.c [PATCH] sep initializing rework 2005-06-25 16:24:29 -07:00
time_hpet.c [PATCH] CPU hotplug: fix hpet sectioning 2005-06-25 16:24:28 -07:00
time.c [PATCH] timer initialization cleanup: DEFINE_TIMER 2005-09-09 14:03:48 -07:00
trampoline.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
traps.c [PATCH] useless includes of linux/irq.h in arch/i386 2005-09-26 18:29:50 -07:00
vm86.c [PATCH] i386: inline assembler: cleanup and encapsulate descriptor and task register management 2005-09-05 00:06:11 -07:00
vmlinux.lds.S [PATCH] i386 / uml: add dwarf sections to static link script 2005-09-10 12:00:17 -07:00
vsyscall-int80.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vsyscall-note.S [PATCH] i386 vDSO: add PT_NOTE segment 2005-04-16 15:24:48 -07:00
vsyscall-sigreturn.S kbuild: full dependency check on asm-offsets.h 2005-09-09 19:28:28 +02:00
vsyscall-sysenter.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vsyscall.lds.S kbuild: full dependency check on asm-offsets.h 2005-09-09 19:28:28 +02:00
vsyscall.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00