Chris Wright wrote:
* Zachary Amsden ([email protected]) wrote:
Yes, but unfortunately that is a nop:
/*
* Avoid unnecessary state transitions, as it confuses
* Geode / Cyrix based boxen.
*/
case CLOCK_EVT_MODE_SHUTDOWN:
if (evt->mode == CLOCK_EVT_MODE_UNUSED)
break;
case CLOCK_EVT_MODE_UNUSED:
if (evt->mode == CLOCK_EVT_MODE_SHUTDOWN)
break;
This one should be fallthrough case during exchange (mode == PERIODIC)
Yes, seems PERIODIC->SHUTDOWN should do the right thing.
case CLOCK_EVT_MODE_ONESHOT:
/* One shot setup */
outb_p(0x38, PIT_MODE);
So switching from PIT to VMI does not disable PIT timer interrupts.
Thus I have to keep this part of the patch.
Since I misread the code, I can drop this now.
Oh, I was looking at this (x86_64 work I have here):
case CLOCK_EVT_MODE_SHUTDOWN:
case CLOCK_EVT_MODE_UNUSED:
outb_p(0x30, PIT_MODE);
outb_p(0, PIT_CH0); /* LSB */
outb_p(0, PIT_CH0); /* MSB */
break;
That's mode 0, not mode 5, but I think the end result is the same.
Yes, mode 0, 4, 5 all should behave similarly.
Zach
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