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usb: Move clearing of queue on halt to the core

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hcds which queue up more then one packet at once (uhci, ehci and xhci),
must clear the queue after an error which has caused the queue to halt.

Currently this is handled as a special case inside the hcd code, this
patch instead adds an USB_RET_REMOVE_FROM_QUEUE packet result code, teaches
the 3 hcds about this and moves the clearing of the queue on a halt into
the USB core.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Hans de Goede 2012-10-24 18:14:08 +02:00 • committed by Gerd Hoffmann
parent 36dfe324fd
commit 0cae7b1a00
5 changed files with 26 additions and 31 deletions
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1
hw/usb.h
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@ -45,6 +45,7 @@
#define USB_RET_IOERROR (-5)
#define USB_RET_ASYNC (-6)
#define USB_RET_ADD_TO_QUEUE (-7)
#define USB_RET_REMOVE_FROM_QUEUE (-8)
#define USB_SPEED_LOW 0
#define USB_SPEED_FULL 1