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[PATCH] Correct bound checking from the value returned from _PPC method.

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processor_perflib.c::acpi_processor_ppc_notifier() check if the value
returned by the processor's _PPC method is 0 and return failed if so.
This is wrong since 0 indicate that the bios think the processor can go
to the highest frequency.  This patch for example fix the HP NX 6125 to
allow its highest frequency to be available.

Signed-off-by: Bruno Ducrot <ducrot@poupinou.org>
Cc: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Dave Jones 2006-11-22 20:42:01 -05:00 committed by Linus Torvalds
parent 5261d661b4
commit 0916bd3ebb
1 changed files with 1 additions and 3 deletions
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4
drivers/acpi/processor_perflib.c
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@ -83,10 +83,8 @@ static int acpi_processor_ppc_notifier(struct notifier_block *nb,
goto out; goto out;
ppc = (unsigned int)pr->performance_platform_limit; ppc = (unsigned int)pr->performance_platform_limit;
if (!ppc)
goto out;
if (ppc > pr->performance->state_count) if (ppc >= pr->performance->state_count)
goto out; goto out;
cpufreq_verify_within_limits(policy, 0, cpufreq_verify_within_limits(policy, 0,