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sysbus: make SysBusDeviceClass::init optional

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Make the SysBusDeviceClass::init optional, for devices which
genuinely don't need to do anything here. In particular, simple
devices which can do all their initialization in their
instance_init method don't need either a DeviceClass::realize
or SysBusDeviceClass::init method.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1363358063-23973-2-git-send-email-peter.maydell@linaro.org
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Peter Maydell 2013-03-15 14:34:19 +00:00 committed by Anthony Liguori
parent 5357406415
commit 4ce5dae88e
1 changed files with 3 additions and 0 deletions
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3
hw/sysbus.c
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@ -137,6 +137,9 @@ static int sysbus_device_init(DeviceState *dev)
SysBusDevice *sd = SYS_BUS_DEVICE(dev);
SysBusDeviceClass *sbc = SYS_BUS_DEVICE_GET_CLASS(sd);
if (!sbc->init) {
return 0;
}
return sbc->init(sd);
}