Hi folks, This is a simple question, but I didn't find any solution on the web (nor in this group). I'm using linux 2.6.30 on a Samsung S3C2410 ARM9. I use a monolitic kernel, with USB serial gadget driver. Normally I test it connecting it to a Windows XP USB host port, and I send datas using Hyperterminal (I hate this, but it's what my customers request). My user program uses /dev/ttyGS0, and all works OK (open, read, write, close, poll). My problem is: how can the user program be notified about plugging / unplugging the USB cable ? When the cable get unplugged, poll() receives POLLHUP|POLLERR signal forever, how can I acknowledge it ? Should I close(), and wait for reopening ? Or simply mask it ? What should the program wait for to be notified for USB cable insertion ? I would like to sleep and wait for something without wasting precious CPU time. Thank you Davide Rizzo -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
