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usbredir: free vm_change_state_handler in usbredir destroy dispatch 

In usbredir destroy dispatch function, it doesn't free the vm change
state handler once registered in usbredir_realize function. This will
lead a memory leak issue. This patch avoid this.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 58216976.d0236b0a.77b99.bcd6@mx.google.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
master
Li Qiang 2016-11-07 21:57:46 -08:00 committed by Stefan Hajnoczi
parent 791f97758e
commit 07b026fd82
1 changed files with 4 additions and 1 deletions
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5
hw/usb/redirect.c
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@ -132,6 +132,7 @@ struct USBRedirDevice {
struct usbredirfilter_rule *filter_rules;
int filter_rules_count;
int compatible_speedmask;
VMChangeStateEntry *vmstate;
};
#define TYPE_USB_REDIR "usb-redir"
@ -1411,7 +1412,8 @@ static void usbredir_realize(USBDevice *udev, Error **errp)
usbredir_chardev_read, usbredir_chardev_event,
dev, NULL, true);
qemu_add_vm_change_state_handler(usbredir_vm_state_change, dev);
dev->vmstate =
qemu_add_vm_change_state_handler(usbredir_vm_state_change, dev);
}
static void usbredir_cleanup_device_queues(USBRedirDevice *dev)
@ -1450,6 +1452,7 @@ static void usbredir_handle_destroy(USBDevice *udev)
}
free(dev->filter_rules);
qemu_del_vm_change_state_handler(dev->vmstate);
}
static int usbredir_check_filter(USBRedirDevice *dev)