| [crisos] Problem with usbserial |
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- To: crisos@xxxxxxxxxxxxxxxxxxx
- Subject: [crisos] Problem with usbserial
- From: J S <sippis1976@xxxxxxxxx>
- Date: Thu, 2 Apr 2009 10:31:43 +0300
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Hi,
just wondering if anyone would have a solution for the following problem:
In our Darwin/Foxboard project, the both USB ports on Foxboard are/can be equipped with a device that uses usbserial driver. In certain case we should make a HW-reset for one of these devices (power down/up); the other device shouldn't be affected on this. We already tried disabling / enabling a either of the ports works as should; also if the other device is used by i.e. usb-storage, the HW reset for one port works OK.
But, if both ports have an active usbserial device, this causes kernel panic. In hc_crisv10.c there is a comment: "Two devices responded to a transaction request. Must be resolved by software. FIXME: Reset ports?". Ok, resetting the ports (or even reloading usbserial) would be a partial fix for our project, but would it be possible to preserve the other port?
Regards, Zoni