On Wed, 14 Mar 2007, Lei Sun wrote: > Here is the usb relaed dmesg, it's a bit long , > Maybe i need to look into the schematics, see why the VBUS power is lost > after driver initailzed, the power is on before booting up linux.
Your log shows port status = 0x1803, which means that VBUS power was on when you plugged in the flash device. But the log doesn't contain any messages from ehci_hub_status_data(). That routine should also see the port status is 0x1803 and it should return 1. > <5>ehci_irq: status=0x00000004 > PCD deteted, i=2 > command=10009 > status=0 > status=1803 What happens the next time ehci_hub_status_data() is called after this? Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
