diff mbox series

[RFCv2,3/9] qdev: Provide qdev_get_bus_hotplug_handler()

Message ID 20190123195527.29575-4-david@redhat.com
State New
Headers show
Series qdev: Hotplug handler chaining + virtio-pmem | expand

Commit Message

David Hildenbrand Jan. 23, 2019, 7:55 p.m. UTC
Let's use a wrapper instead of looking it up manually. This function can
than be reused when we explicitly want to have the bus hotplug handler
(e.g. when the bus hotplug handler was overwritten by the machine
hotplug handler).

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
 hw/core/qdev.c         | 10 +++++++++-
 include/hw/qdev-core.h |  1 +
 2 files changed, 10 insertions(+), 1 deletion(-)

Comments

Igor Mammedov Jan. 28, 2019, 2:01 p.m. UTC | #1
On Wed, 23 Jan 2019 20:55:21 +0100
David Hildenbrand <david@redhat.com> wrote:

> Let's use a wrapper instead of looking it up manually. This function can
> than be reused when we explicitly want to have the bus hotplug handler
> (e.g. when the bus hotplug handler was overwritten by the machine
> hotplug handler).
> 
> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
maybe drop the 2nd one?

> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
>  hw/core/qdev.c         | 10 +++++++++-
>  include/hw/qdev-core.h |  1 +
>  2 files changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/core/qdev.c b/hw/core/qdev.c
> index 7ad45c0bd6..e2207d77a4 100644
> --- a/hw/core/qdev.c
> +++ b/hw/core/qdev.c
> @@ -233,12 +233,20 @@ HotplugHandler *qdev_get_machine_hotplug_handler(DeviceState *dev)
>      return NULL;
>  }
>  
> +HotplugHandler *qdev_get_bus_hotplug_handler(DeviceState *dev)
> +{
> +    if (dev->parent_bus) {
> +        return dev->parent_bus->hotplug_handler;
> +    }
> +    return NULL;
> +}
> +
>  HotplugHandler *qdev_get_hotplug_handler(DeviceState *dev)
>  {
>      HotplugHandler *hotplug_ctrl = qdev_get_machine_hotplug_handler(dev);
>  
>      if (hotplug_ctrl == NULL && dev->parent_bus) {
> -        hotplug_ctrl = dev->parent_bus->hotplug_handler;
> +        hotplug_ctrl = qdev_get_bus_hotplug_handler(dev);
>      }
>      return hotplug_ctrl;
>  }
> diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
> index 9081fb0030..cb0ec63c2d 100644
> --- a/include/hw/qdev-core.h
> +++ b/include/hw/qdev-core.h
> @@ -280,6 +280,7 @@ DeviceState *qdev_try_create(BusState *bus, const char *name);
>  void qdev_init_nofail(DeviceState *dev);
>  void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
>                                   int required_for_version);
> +HotplugHandler *qdev_get_bus_hotplug_handler(DeviceState *dev);
>  HotplugHandler *qdev_get_machine_hotplug_handler(DeviceState *dev);
>  /**
>   * qdev_get_hotplug_handler: Get handler responsible for device wiring
David Hildenbrand Jan. 28, 2019, 2:02 p.m. UTC | #2
On 28.01.19 15:01, Igor Mammedov wrote:
> On Wed, 23 Jan 2019 20:55:21 +0100
> David Hildenbrand <david@redhat.com> wrote:
> 
>> Let's use a wrapper instead of looking it up manually. This function can
>> than be reused when we explicitly want to have the bus hotplug handler
>> (e.g. when the bus hotplug handler was overwritten by the machine
>> hotplug handler).
>>
>> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
>> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
> maybe drop the 2nd one?

Whoops, indeed! Thanks!
diff mbox series

Patch

diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index 7ad45c0bd6..e2207d77a4 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -233,12 +233,20 @@  HotplugHandler *qdev_get_machine_hotplug_handler(DeviceState *dev)
     return NULL;
 }
 
+HotplugHandler *qdev_get_bus_hotplug_handler(DeviceState *dev)
+{
+    if (dev->parent_bus) {
+        return dev->parent_bus->hotplug_handler;
+    }
+    return NULL;
+}
+
 HotplugHandler *qdev_get_hotplug_handler(DeviceState *dev)
 {
     HotplugHandler *hotplug_ctrl = qdev_get_machine_hotplug_handler(dev);
 
     if (hotplug_ctrl == NULL && dev->parent_bus) {
-        hotplug_ctrl = dev->parent_bus->hotplug_handler;
+        hotplug_ctrl = qdev_get_bus_hotplug_handler(dev);
     }
     return hotplug_ctrl;
 }
diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
index 9081fb0030..cb0ec63c2d 100644
--- a/include/hw/qdev-core.h
+++ b/include/hw/qdev-core.h
@@ -280,6 +280,7 @@  DeviceState *qdev_try_create(BusState *bus, const char *name);
 void qdev_init_nofail(DeviceState *dev);
 void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
                                  int required_for_version);
+HotplugHandler *qdev_get_bus_hotplug_handler(DeviceState *dev);
 HotplugHandler *qdev_get_machine_hotplug_handler(DeviceState *dev);
 /**
  * qdev_get_hotplug_handler: Get handler responsible for device wiring