On Tue, 4 May 2004, Randy.Dunlap wrote:
On Tue, 4 May 2004 11:58:35 -0400 (EDT) Alan Stern wrote:
| > == after hot-un-plug ==
| > | > HC status
| > usbcmd = 0008 Maxp32 EGSM
| > usbstat = 0020 HCHalted
| > usbint = 000f
| > usbfrnum = (0)264
| > flbaseadd = 2b998264
| > sof = 40
| > stat1 = 0080
| > stat2 = 0080
| > Frame List
| > Skeleton QH's
| | Again, normal.
Sorry for the late reply, but why is HCHalted (above) normal?
Looks like the HCD or controller hit a problem.
Of course, it could be my problem...
No, it is normal. When no devices are attached the driver halts the controller to reduce PCI utilization and avoid DMA activity, thereby permitting improved power management.
Then is it safe to assume, the controller starts _itself_ up when it detects a change in one of its busses?
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