usb-bus: convert USBDeviceClass init to realize
Add "realize/unrealize" in USBDeviceClass, which has errp
as a parameter. So all the implementations now use
error_setg instead of error_report for reporting error.
Note: this patch still keep "init" in USBDeviceClass, and
call kclass->init in usb_device_realize(), avoid breaking
git bisect. After realize all usb devices, will be removed.
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
diff --git a/hw/usb/bus.c b/hw/usb/bus.c
index c7c4dad..12881cb 100644
--- a/hw/usb/bus.c
+++ b/hw/usb/bus.c
@@ -9,7 +9,7 @@
static char *usb_get_dev_path(DeviceState *dev);
static char *usb_get_fw_dev_path(DeviceState *qdev);
-static int usb_qdev_exit(DeviceState *qdev);
+static void usb_qdev_unrealize(DeviceState *qdev, Error **errp);
static Property usb_props[] = {
DEFINE_PROP_STRING("port", USBDevice, port_path),
@@ -107,13 +107,15 @@
return NULL;
}
-static int usb_device_init(USBDevice *dev)
+static void usb_device_realize(USBDevice *dev, Error **errp)
{
USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
- if (klass->init) {
- return klass->init(dev);
+
+ if (klass->realize) {
+ klass->realize(dev, errp);
+ } else if (klass->init) {
+ klass->init(dev);
}
- return 0;
}
USBDevice *usb_device_find_device(USBDevice *dev, uint8_t addr)
@@ -232,36 +234,41 @@
}
}
-static int usb_qdev_init(DeviceState *qdev)
+static void usb_qdev_realize(DeviceState *qdev, Error **errp)
{
USBDevice *dev = USB_DEVICE(qdev);
- int rc;
+ Error *local_err = NULL;
pstrcpy(dev->product_desc, sizeof(dev->product_desc),
usb_device_get_product_desc(dev));
dev->auto_attach = 1;
QLIST_INIT(&dev->strings);
usb_ep_init(dev);
- rc = usb_claim_port(dev);
- if (rc != 0) {
- return rc;
+
+ usb_claim_port(dev, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
}
- rc = usb_device_init(dev);
- if (rc != 0) {
+
+ usb_device_realize(dev, &local_err);
+ if (local_err) {
usb_release_port(dev);
- return rc;
+ error_propagate(errp, local_err);
+ return;
}
+
if (dev->auto_attach) {
- rc = usb_device_attach(dev);
- if (rc != 0) {
- usb_qdev_exit(qdev);
- return rc;
+ usb_device_attach(dev, &local_err);
+ if (local_err) {
+ usb_qdev_unrealize(qdev, NULL);
+ error_propagate(errp, local_err);
+ return;
}
}
- return 0;
}
-static int usb_qdev_exit(DeviceState *qdev)
+static void usb_qdev_unrealize(DeviceState *qdev, Error **errp)
{
USBDevice *dev = USB_DEVICE(qdev);
@@ -272,7 +279,6 @@
if (dev->port) {
usb_release_port(dev);
}
- return 0;
}
typedef struct LegacyUSBFactory
@@ -392,7 +398,7 @@
bus->nfree--;
}
-int usb_claim_port(USBDevice *dev)
+void usb_claim_port(USBDevice *dev, Error **errp)
{
USBBus *bus = usb_bus_from_device(dev);
USBPort *port;
@@ -406,9 +412,9 @@
}
}
if (port == NULL) {
- error_report("Error: usb port %s (bus %s) not found (in use?)",
- dev->port_path, bus->qbus.name);
- return -1;
+ error_setg(errp, "Error: usb port %s (bus %s) not found (in use?)",
+ dev->port_path, bus->qbus.name);
+ return;
}
} else {
if (bus->nfree == 1 && strcmp(object_get_typename(OBJECT(dev)), "usb-hub") != 0) {
@@ -416,9 +422,9 @@
usb_create_simple(bus, "usb-hub");
}
if (bus->nfree == 0) {
- error_report("Error: tried to attach usb device %s to a bus "
- "with no free ports", dev->product_desc);
- return -1;
+ error_setg(errp, "Error: tried to attach usb device %s to a bus "
+ "with no free ports", dev->product_desc);
+ return;
}
port = QTAILQ_FIRST(&bus->free);
}
@@ -432,7 +438,6 @@
QTAILQ_INSERT_TAIL(&bus->used, port, next);
bus->nused++;
- return 0;
}
void usb_release_port(USBDevice *dev)
@@ -475,7 +480,7 @@
}
}
-int usb_device_attach(USBDevice *dev)
+void usb_device_attach(USBDevice *dev, Error **errp)
{
USBBus *bus = usb_bus_from_device(dev);
USBPort *port = dev->port;
@@ -489,18 +494,16 @@
devspeed, portspeed);
if (!(port->speedmask & dev->speedmask)) {
- error_report("Warning: speed mismatch trying to attach"
- " usb device \"%s\" (%s speed)"
- " to bus \"%s\", port \"%s\" (%s speed)",
- dev->product_desc, devspeed,
- bus->qbus.name, port->path, portspeed);
- return -1;
+ error_setg(errp, "Warning: speed mismatch trying to attach"
+ " usb device \"%s\" (%s speed)"
+ " to bus \"%s\", port \"%s\" (%s speed)",
+ dev->product_desc, devspeed,
+ bus->qbus.name, port->path, portspeed);
+ return;
}
dev->attached++;
usb_attach(port);
-
- return 0;
}
int usb_device_detach(USBDevice *dev)
@@ -688,9 +691,9 @@
{
DeviceClass *k = DEVICE_CLASS(klass);
k->bus_type = TYPE_USB_BUS;
- k->init = usb_qdev_init;
k->unplug = qdev_simple_unplug_cb;
- k->exit = usb_qdev_exit;
+ k->realize = usb_qdev_realize;
+ k->unrealize = usb_qdev_unrealize;
k->props = usb_props;
}
