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usb: split endpoint init and reset

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Create a new usb_ep_reset() function to reset endpoint state, without
re-initialiting the queues, so we don't unlink in-flight packets just
because usb-host has to re-parse the descriptor tables.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-07-03 10:11:21 +02:00
parent adae502c0a
commit 19deaa089c
3 changed files with 15 additions and 4 deletions
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13
hw/usb/core.c
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@ -550,7 +550,7 @@ void usb_packet_cleanup(USBPacket *p)
qemu_iovec_destroy(&p->iov);
}
void usb_ep_init(USBDevice *dev)
void usb_ep_reset(USBDevice *dev)
{
int ep;
@ -559,7 +559,6 @@ void usb_ep_init(USBDevice *dev)
dev->ep_ctl.ifnum = 0;
dev->ep_ctl.dev = dev;
dev->ep_ctl.pipeline = false;
QTAILQ_INIT(&dev->ep_ctl.queue);
for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) {
dev->ep_in[ep].nr = ep + 1;
dev->ep_out[ep].nr = ep + 1;
@ -573,6 +572,16 @@ void usb_ep_init(USBDevice *dev)
dev->ep_out[ep].dev = dev;
dev->ep_in[ep].pipeline = false;
dev->ep_out[ep].pipeline = false;
}
}
void usb_ep_init(USBDevice *dev)
{
int ep;
usb_ep_reset(dev);
QTAILQ_INIT(&dev->ep_ctl.queue);
for (ep = 0; ep < USB_MAX_ENDPOINTS; ep++) {
QTAILQ_INIT(&dev->ep_in[ep].queue);
QTAILQ_INIT(&dev->ep_out[ep].queue);
}