system/qemu
system/qemu
1
0
Fork 0
mirror of https://gitlab.com/qemu-project/qemu synced 2024-09-19 18:51:32 +00:00
Code Issues Packages Projects Releases Wiki Activity

usb-linux: walk async urb list in cancel

Browse source 
Lookup async urbs which are to be canceled using the linked list
instead of the direct opaque pointer.  There are two reasons we
are doing that:  First, to avoid the opaque poiner to the callback,
which is needed for upcoming cleanups.  Second, because we might
need multiple urbs per request for highspeed support, so a single
opaque pointer doesn't cut it any more anyway.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2011-05-16 09:20:06 +02:00
parent 7a8fc83f34
commit 227ebeb535
1 changed files with 17 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
usb-linux.c
View file

@ -315,19 +315,25 @@ static void async_complete(void *opaque)
}
}
static void async_cancel(USBPacket *unused, void *opaque)
static void async_cancel(USBPacket *p, void *opaque)
{
AsyncURB *aurb = opaque;
USBHostDevice *s = aurb->hdev;
USBHostDevice *s = opaque;
AsyncURB *aurb;
DPRINTF("husb: async cancel. aurb %p\n", aurb);
QLIST_FOREACH(aurb, &s->aurbs, next) {
if (p != aurb->packet) {
continue;
}
/* Mark it as dead (see async_complete above) */
aurb->packet = NULL;
DPRINTF("husb: async cancel: packet %p, aurb %p\n", p, aurb);
int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
if (r < 0) {
DPRINTF("husb: async. discard urb failed errno %d\n", errno);
/* Mark it as dead (see async_complete above) */
aurb->packet = NULL;
int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
if (r < 0) {
DPRINTF("husb: async. discard urb failed errno %d\n", errno);
}
}
}
@ -696,7 +702,7 @@ static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
}
}
usb_defer_packet(p, async_cancel, aurb);
usb_defer_packet(p, async_cancel, s);
return USB_RET_ASYNC;
}
@ -828,7 +834,7 @@ static int usb_host_handle_control(USBDevice *dev, USBPacket *p,
}
}
usb_defer_packet(p, async_cancel, aurb);
usb_defer_packet(p, async_cancel, s);
return USB_RET_ASYNC;
}