diff options
Diffstat (limited to 'hw/usb/redirect.c')
| -rw-r--r-- | hw/usb/redirect.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c index b10241a139..2283565b0c 100644 --- a/hw/usb/redirect.c +++ b/hw/usb/redirect.c @@ -862,15 +862,11 @@ static void usbredir_chardev_close_bh(void *opaque) } } -static void usbredir_chardev_open(USBRedirDevice *dev) +static void usbredir_create_parser(USBRedirDevice *dev) { uint32_t caps[USB_REDIR_CAPS_SIZE] = { 0, }; int flags = 0; - /* Make sure any pending closes are handled (no-op if none pending) */ - usbredir_chardev_close_bh(dev); - qemu_bh_cancel(dev->chardev_close_bh); - DPRINTF("creating usbredirparser\n"); dev->parser = qemu_oom_check(usbredirparser_create()); @@ -982,7 +978,10 @@ static void usbredir_chardev_event(void *opaque, int event) switch (event) { case CHR_EVENT_OPENED: DPRINTF("chardev open\n"); - usbredir_chardev_open(dev); + /* Make sure any pending closes are handled (no-op if none pending) */ + usbredir_chardev_close_bh(dev); + qemu_bh_cancel(dev->chardev_close_bh); + usbredir_create_parser(dev); break; case CHR_EVENT_CLOSED: DPRINTF("chardev close\n"); @@ -1615,12 +1614,17 @@ static int usbredir_get_parser(QEMUFile *f, void *priv, size_t unused) } /* - * Our chardev should be open already at this point, otherwise - * the usbredir channel will be broken (ie spice without seamless) + * If our chardev is not open already at this point the usbredir connection + * has been broken (non seamless migration, or restore from disk). + * + * In this case create a temporary parser to receive the migration data, + * and schedule the close_bh to report the device as disconnected to the + * guest and to destroy the parser again. */ if (dev->parser == NULL) { - ERROR("get_parser called with closed chardev, failing migration\n"); - return -1; + WARNING("usb-redir connection broken during migration\n"); + usbredir_create_parser(dev); + qemu_bh_schedule(dev->chardev_close_bh); } data = g_malloc(len); |