475c0a6b2c
These macros are no longer in module.h and module.h is no longer present everywhere. Call out export.h for the real users who are making use of these macros, or else we'll get things like: CC drivers/uwb/umc-drv.o drivers/uwb/umc-dev.c:42: warning: data definition has no type or storage class drivers/uwb/umc-dev.c:42: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL_GPL’ drivers/uwb/umc-dev.c:42: warning: parameter names (without types) in function declaration Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
/*
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* UWB Multi-interface Controller device management.
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*
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* Copyright (C) 2007 Cambridge Silicon Radio Ltd.
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*
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* This file is released under the GNU GPL v2.
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*/
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#include <linux/kernel.h>
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#include <linux/export.h>
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#include <linux/slab.h>
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#include <linux/uwb/umc.h>
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static void umc_device_release(struct device *dev)
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{
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struct umc_dev *umc = to_umc_dev(dev);
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kfree(umc);
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}
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/**
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* umc_device_create - allocate a child UMC device
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* @parent: parent of the new UMC device.
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* @n: index of the new device.
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*
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* The new UMC device will have a bus ID of the parent with '-n'
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* appended.
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*/
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struct umc_dev *umc_device_create(struct device *parent, int n)
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{
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struct umc_dev *umc;
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umc = kzalloc(sizeof(struct umc_dev), GFP_KERNEL);
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if (umc) {
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dev_set_name(&umc->dev, "%s-%d", dev_name(parent), n);
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umc->dev.parent = parent;
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umc->dev.bus = &umc_bus_type;
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umc->dev.release = umc_device_release;
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umc->dev.dma_mask = parent->dma_mask;
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}
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return umc;
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}
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EXPORT_SYMBOL_GPL(umc_device_create);
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/**
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* umc_device_register - register a UMC device
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* @umc: pointer to the UMC device
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*
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* The memory resource for the UMC device is acquired and the device
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* registered with the system.
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*/
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int umc_device_register(struct umc_dev *umc)
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{
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int err;
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err = request_resource(umc->resource.parent, &umc->resource);
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if (err < 0) {
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dev_err(&umc->dev, "can't allocate resource range %pR: %d\n",
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&umc->resource, err);
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goto error_request_resource;
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}
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err = device_register(&umc->dev);
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if (err < 0)
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goto error_device_register;
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return 0;
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error_device_register:
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release_resource(&umc->resource);
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error_request_resource:
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return err;
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}
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EXPORT_SYMBOL_GPL(umc_device_register);
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/**
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* umc_device_unregister - unregister a UMC device
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* @umc: pointer to the UMC device
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*
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* First we unregister the device, make sure the driver can do it's
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* resource release thing and then we try to release any left over
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* resources. We take a ref to the device, to make sure it doesn't
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* disappear under our feet.
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*/
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void umc_device_unregister(struct umc_dev *umc)
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{
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struct device *dev;
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if (!umc)
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return;
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dev = get_device(&umc->dev);
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device_unregister(&umc->dev);
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release_resource(&umc->resource);
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put_device(dev);
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}
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EXPORT_SYMBOL_GPL(umc_device_unregister);
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