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ARM: hw/exynos4210_mct.c: Fix a bug which hangs Linux kernel. 

After some long period of time Linux kernel hanged due to
ptimer_get_count may return 0 before timer interrupt occurs,
thus, causing FRC to jump back in time

Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Stanislav Vorobiov 2012-07-04 10:43:30 +00:00 committed by Peter Maydell
parent 71ea2e0161
commit 2e2aafc0f6
1 changed files with 0 additions and 4 deletions
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hw/exynos4210_mct.c
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@ -376,10 +376,6 @@ static uint64_t exynos4210_gfrc_get_count(Exynos4210MCTGT *s)
{ {
uint64_t count = 0; uint64_t count = 0;
count = ptimer_get_count(s->ptimer_frc); count = ptimer_get_count(s->ptimer_frc);
if (!count) {
/* Timer event was generated and s->reg.cnt holds adequate value */
return s->reg.cnt;
}
count = s->count - count; count = s->count - count;
return s->reg.cnt + count; return s->reg.cnt + count;
} }