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usb: rework attach/detach workflow

Browse source 
Add separate detach callback to USBPortOps, split
uhci/ohci/musb/usbhub attach functions into two.

Move common code to the usb_attach() function, only
the hardware-specific bits remain in the attach/detach
callbacks.

Keep track of the port it is attached to for each usb device.

[ v3: fix tyops in usb-musb.c ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2010-12-01 11:27:05 +01:00
parent 0d86d2bebb
commit 618c169b57
6 changed files with 124 additions and 135 deletions
Download patch file Download diff file Expand all files Collapse all files

20
hw/usb.c
View file

@ -28,7 +28,25 @@
void usb_attach(USBPort *port, USBDevice *dev)
{
port->ops->attach(port, dev);
if (dev != NULL) {
/* attach */
if (port->dev) {
usb_attach(port, NULL);
}
dev->port = port;
port->dev = dev;
port->ops->attach(port);
usb_send_msg(dev, USB_MSG_ATTACH);
} else {
/* detach */
dev = port->dev;
port->ops->detach(port);
if (dev) {
usb_send_msg(dev, USB_MSG_DETACH);
dev->port = NULL;
port->dev = NULL;
}
}
}
/**********************/