Re: hub does disconnect when resuming
Oliver Neukum <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
Am Samstag, 3. Februar 2007 23:02 schrieb Alan Stern: > That's not a problem as far as the hardware is concerned. But both > threads call hub_port_status(), which reads the status into a dedicated > buffer at hub->status->port. Even though the URBs are serialized, on > non-cache-coherent architectures we could have problems with one thread > accessing the buffer while the other thread is doing DMA on it. And this kills the other obvious solution of preallocating one buffer per port. The more I think about it, the simpler serialization appears. Regards Oliver ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel