Perhaps it will be good enough to limit the timing between URBs generated by your driver. URBs coming from somewhere else won't be your responsibility.
Thats exactly my plan. I'm just having trouble devising a good way to do this.
If you want to be really clever, you can keep track of the status messages and reset the device if they no longer arrive as expected.
Unfortunately the only way to reset this device is by cycling power (the device has an external power source). I think what I'll end up doing is using a circular buffer. The file operations will cause commands to be inserted into the cirular buffer. There will a kthread that will send the next message from the buffer and then sleep for the needed interval. I could use a timer instead of a kthread, but at least the kthread's function will not be in_interrupt. Does this sound fair or am I doing alot of work for something the kernel may already provide me? I know the kernel has a ton of data structures for queuing and locking but I don't think any of them apply to my problem. Thanks, Paul
The best approach depends on the context. If things happen periodically (driven by a timer, for example) the simplest approach is to wait for the next period if the delay since the previous URB isn't long enough yet. If things happen in a process context you can use msleep(). And so on... Alan Stern ------------------------------------------------------- All the advantages of Linux Managed Hosting--Without the Cost and Risk! Fully trained technicians. The highest number of Red Hat certifications in the hosting industry. Fanatical Support. Click to learn more http://sel.as-us.falkag.net/sel?cmd=lnk&kid=107521&bid=248729&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
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