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xilinx_timer: Fixed deadlock issue

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The timer was deadlocking when the interval was set too low. It would cause a
flood of timer events and the CPU would halt indefinately. This is a known issue
and theres a generic workaround in place in ptimer on ptimer_set_limit(),
however the Xilinx timer uses ptimer_set_count() instead of set_limit. Changed
the call to set_count() to an equivalent call of set_limit() instead, which
brings the workaround into play.

Signed-off-by: Peter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
This commit is contained in:
Peter A. G. Crosthwaite 2012-06-16 15:20:59 +10:00 committed by Edgar E. Iglesias
parent fc3511d4d8
commit 7798a8828a
1 changed files with 1 additions and 1 deletions
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2
hw/xilinx_timer.c
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@ -136,7 +136,7 @@ static void timer_enable(struct xlx_timer *xt)
count = xt->regs[R_TLR];
else
count = ~0 - xt->regs[R_TLR];
ptimer_set_count(xt->ptimer, count);
ptimer_set_limit(xt->ptimer, count, 1);
ptimer_run(xt->ptimer, 1);
}