hpet: fix the possibility of insane return value of hpet_calibrate() against SMI

hpet_calibrate() has a possibility of miss-calibration due to SMI.  If SMI
interrupts in the while loop of calibration, then return value will be
big.  This change calibrates until stabilizing by the return value with a
small value.

[[email protected]: trivial style tweaks]
Signed-off-by: Yasunori Goto <[email protected]>
Acked-by: Clemens Ladisch <[email protected]>
Acked-by: Vojtech Pavlik <[email protected]>
Cc: Robert Picco <[email protected]>
Cc: Venkatesh Pallipadi <[email protected]>
Cc: Ingo Molnar <[email protected]>
Acked-by: Paul Gortmaker <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions