robin.thoni/ipxe - git rthoni.com

Michael Brown 5ecd16af04 [usb] Always clear recorded disconnections after performing hotplug actions The recorded disconnections (in port->disconnected) will currently be left uncleared if usb_attached() returns an error (e.g. because there are no drivers for a particular USB device). This is incorrect behaviour: the disconnection has been handled and the record should be cleared until the next physical disconnection is detected (via the CSC bit). The problem is masked for EHCI, UHCI, and USB hubs, since these will report a changed port (via usb_port_changed()) only when the underlying hardware reports a change. xHCI will call usb_port_changed() in response to any port status event, at which point the stale value of port->disconnected will be erroneously acted upon. This can lead to an endless loop of repeatedly enumerating the same device when a driverless device is attached to an xHCI root hub port. Fix by unconditionally clearing port->disconnected in usb_hotplugged(). Reported-by: Robin Smidsrød <robin@smidsrod.no> Tested-by: Robin Smidsrød <robin@smidsrod.no> Signed-off-by: Michael Brown <mcb30@ipxe.org>		vor 9 Jahren
contrib	[errdb] Strip platform error code for non-platform-generated errors	vor 11 Jahren
src	[usb] Always clear recorded disconnections after performing hotplug actions	vor 9 Jahren
COPYING	[legal] Update GPLv2 licence text	vor 9 Jahren
COPYING.GPLv2	[legal] Update GPLv2 licence text	vor 9 Jahren
COPYING.UBDL	[legal] Add support for the Unmodified Binary Distribution Licence	vor 9 Jahren
README	[doc] Re-add README file	vor 14 Jahren

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org