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intel_idle: correct BXT support

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Commit 5dcef69486 ("intel_idle: add BXT support") added an 8-element
lookup array with just a 2-bit value used for lookups. As per the SDM
that bit field is really 3 bits wide. While this is supposedly benign
here, future re-use of the code for other CPUs might expose the issue.

Signed-off-by: Jan Beulich <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Jan Beulich authored and Rafael J. Wysocki committed 2016-07-09 01:05:30 +02:00
1 parent 3451ab3ebf
commit bef4509625
1 file changed
+1 -1
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drivers/idle/intel_idle.c
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@@ -1190,7 +1190,7 @@ static unsigned long long irtl_2_usec(unsigned long long irtl)
if (!irtl)
return 0;
ns = irtl_ns_units[(irtl >> 10) & 0x3];
ns = irtl_ns_units[(irtl >> 10) & 0x7];
return div64_u64((irtl & 0x3FF) * ns, 1000);
}