Re: [Qemu-devel] [PATCH v3 09/11] pci: Reuse pci-bridge hotplug handler handlers for pcie-pci-bridge

[Igor Mammedov <imammedo@redhat.com>]

On Tue, 20 Nov 2018 12:04:25 +0100
David Hildenbrand <david@redhat.com> wrote:

> These functions are essentially the same, we only have to use
> object_get_typename() for reporting errors. So let's share the
> implementation of hotplug handler callbacks.
> 
> Suggested-by: Igor Mammedov <imammedo@redhat.com>
> Signed-off-by: David Hildenbrand <david@redhat.com>

Reviewed-by: Igor Mammedov <imammedo@redhat.com>

> ---
>  hw/pci-bridge/pci_bridge_dev.c  | 12 ++++++------
>  hw/pci-bridge/pcie_pci_bridge.c | 30 ++----------------------------
>  include/hw/pci/pci_bridge.h     |  4 ++++
>  3 files changed, 12 insertions(+), 34 deletions(-)
> 
> diff --git a/hw/pci-bridge/pci_bridge_dev.c b/hw/pci-bridge/pci_bridge_dev.c
> index e1df9a52ac..fa0be13ac4 100644
> --- a/hw/pci-bridge/pci_bridge_dev.c
> +++ b/hw/pci-bridge/pci_bridge_dev.c
> @@ -206,27 +206,27 @@ static const VMStateDescription pci_bridge_dev_vmstate = {
>      }
>  };
>  
> -static void pci_bridge_dev_plug_cb(HotplugHandler *hotplug_dev,
> -                                   DeviceState *dev, Error **errp)
> +void pci_bridge_dev_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
> +                            Error **errp)
>  {
>      PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev);
>  
>      if (!shpc_present(pci_hotplug_dev)) {
>          error_setg(errp, "standard hotplug controller has been disabled for "
> -                   "this %s", TYPE_PCI_BRIDGE_DEV);
> +                   "this %s", object_get_typename(OBJECT(hotplug_dev)));
>          return;
>      }
>      shpc_device_plug_cb(hotplug_dev, dev, errp);
>  }
>  
> -static void pci_bridge_dev_unplug_request_cb(HotplugHandler *hotplug_dev,
> -                                             DeviceState *dev, Error **errp)
> +void pci_bridge_dev_unplug_request_cb(HotplugHandler *hotplug_dev,
> +                                      DeviceState *dev, Error **errp)
>  {
>      PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev);
>  
>      if (!shpc_present(pci_hotplug_dev)) {
>          error_setg(errp, "standard hotplug controller has been disabled for "
> -                   "this %s", TYPE_PCI_BRIDGE_DEV);
> +                   "this %s", object_get_typename(OBJECT(hotplug_dev)));
>          return;
>      }
>      shpc_device_unplug_request_cb(hotplug_dev, dev, errp);
> diff --git a/hw/pci-bridge/pcie_pci_bridge.c b/hw/pci-bridge/pcie_pci_bridge.c
> index c634353b06..0ffea680d5 100644
> --- a/hw/pci-bridge/pcie_pci_bridge.c
> +++ b/hw/pci-bridge/pcie_pci_bridge.c
> @@ -137,32 +137,6 @@ static const VMStateDescription pcie_pci_bridge_dev_vmstate = {
>          }
>  };
>  
> -static void pcie_pci_bridge_plug_cb(HotplugHandler *hotplug_dev,
> -                                    DeviceState *dev, Error **errp)
> -{
> -    PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev);
> -
> -    if (!shpc_present(pci_hotplug_dev)) {
> -        error_setg(errp, "standard hotplug controller has been disabled for "
> -                   "this %s", TYPE_PCIE_PCI_BRIDGE_DEV);
> -        return;
> -    }
> -    shpc_device_plug_cb(hotplug_dev, dev, errp);
> -}
> -
> -static void pcie_pci_bridge_unplug_request_cb(HotplugHandler *hotplug_dev,
> -                                              DeviceState *dev, Error **errp)
> -{
> -    PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev);
> -
> -    if (!shpc_present(pci_hotplug_dev)) {
> -        error_setg(errp, "standard hotplug controller has been disabled for "
> -                   "this %s", TYPE_PCIE_PCI_BRIDGE_DEV);
> -        return;
> -    }
> -    shpc_device_unplug_request_cb(hotplug_dev, dev, errp);
> -}
> -
>  static void pcie_pci_bridge_class_init(ObjectClass *klass, void *data)
>  {
>      PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
> @@ -179,8 +153,8 @@ static void pcie_pci_bridge_class_init(ObjectClass *klass, void *data)
>      dc->props = pcie_pci_bridge_dev_properties;
>      dc->reset = &pcie_pci_bridge_reset;
>      set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
> -    hc->plug = pcie_pci_bridge_plug_cb;
> -    hc->unplug_request = pcie_pci_bridge_unplug_request_cb;
> +    hc->plug = pci_bridge_dev_plug_cb;
> +    hc->unplug_request = pci_bridge_dev_unplug_request_cb;
>  }
>  
>  static const TypeInfo pcie_pci_bridge_info = {
> diff --git a/include/hw/pci/pci_bridge.h b/include/hw/pci/pci_bridge.h
> index cdff7edfd1..6e37c7551a 100644
> --- a/include/hw/pci/pci_bridge.h
> +++ b/include/hw/pci/pci_bridge.h
> @@ -99,6 +99,10 @@ void pci_bridge_reset(DeviceState *qdev);
>  void pci_bridge_initfn(PCIDevice *pci_dev, const char *typename);
>  void pci_bridge_exitfn(PCIDevice *pci_dev);
>  
> +void pci_bridge_dev_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
> +                            Error **errp);
> +void pci_bridge_dev_unplug_request_cb(HotplugHandler *hotplug_dev,
> +                                      DeviceState *dev, Error **errp);
>  
>  /*
>   * before qdev initialization(qdev_init()), this function sets bus_name and