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Michael Brown ebf0166081 [usb] Allow device halt to be cleared independently of host controller 
Closing and reopening a USB endpoint will clear any halt status
recorded by the host controller, but may leave the endpoint halted at
the device.  This will cause the first packet submitted to the
reopened endpoint to be lost, before the automatic stall recovery
mechanism detects the halt and resets the endpoint.

This is relatively harmless for USB network or HID devices, since the
wire protocols will recover gracefully from dropped packets.  Some
protocols (e.g. for USB mass storage devices) assume zero packet loss
and so would be adversely affected.

Fix by allowing any device endpoint halt status to be cleared on a
freshly opened endpoint.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
 		2020-10-12 15:21:25 +01:00
contrib [coverity] Override assumptions about wcrtomb() and hmac_init() 2019-08-17 17:18:54 +01:00
src [usb] Allow device halt to be cleared independently of host controller 2020-10-12 15:21:25 +01:00
.travis.yml [travis] Ensure that most recent tag is always available 2020-01-03 00:14:03 +01:00
COPYING [legal] Update GPLv2 licence text 2015-02-26 17:59:53 +00:00
COPYING.GPLv2 [legal] Update GPLv2 licence text 2015-02-26 17:59:53 +00:00
COPYING.UBDL [legal] Add support for the Unmodified Binary Distribution Licence 2015-03-02 12:07:14 +00:00
README [doc] Re-add README file 2010-05-28 00:03:47 +01:00

README 

iPXE README File

Quick start guide:

   cd src
   make

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