/*
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* Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de>
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* Copyright (c) 2013 Hannes Frederic Sowa <hannes@stressinduktion.org>
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* Copyright (c) 2014 Luis R. Rodriguez <mcgrof@do-not-panic.com>
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*
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* Backport functionality introduced in Linux 3.13.
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*
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* Copyright (c) 2014 Hauke Mehrtens <hauke@hauke-m.de>
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*
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* Backport functionality introduced in Linux 3.14.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/version.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/hwmon.h>
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#include <asm/xenomai/wrappers.h>
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/*
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* Same rules as kernel/cobalt/include/asm-generic/xenomai/wrappers.h
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* apply to reduce #ifdefery.
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*/
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#if LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0)
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#ifdef CONFIG_PCI_MSI
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int pci_enable_msix_range(struct pci_dev *dev,
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struct msix_entry *entries,
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int minvec, int maxvec)
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{
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int nvec = maxvec;
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int rc;
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if (maxvec < minvec)
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return -ERANGE;
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do {
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rc = pci_enable_msix(dev, entries, nvec);
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if (rc < 0) {
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return rc;
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} else if (rc > 0) {
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if (rc < minvec)
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return -ENOSPC;
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nvec = rc;
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}
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} while (rc);
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return nvec;
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}
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EXPORT_SYMBOL(pci_enable_msix_range);
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#endif
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#endif /* < 3.14 */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(3,13,0)
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#ifdef CONFIG_HWMON
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struct device*
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hwmon_device_register_with_groups(struct device *dev, const char *name,
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void *drvdata,
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const struct attribute_group **groups)
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{
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struct device *hwdev;
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hwdev = hwmon_device_register(dev);
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hwdev->groups = groups;
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dev_set_drvdata(hwdev, drvdata);
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return hwdev;
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}
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static void devm_hwmon_release(struct device *dev, void *res)
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{
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struct device *hwdev = *(struct device **)res;
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hwmon_device_unregister(hwdev);
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}
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struct device *
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devm_hwmon_device_register_with_groups(struct device *dev, const char *name,
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void *drvdata,
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const struct attribute_group **groups)
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{
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struct device **ptr, *hwdev;
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if (!dev)
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return ERR_PTR(-EINVAL);
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ptr = devres_alloc(devm_hwmon_release, sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return ERR_PTR(-ENOMEM);
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hwdev = hwmon_device_register_with_groups(dev, name, drvdata, groups);
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if (IS_ERR(hwdev))
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goto error;
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*ptr = hwdev;
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devres_add(dev, ptr);
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return hwdev;
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error:
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devres_free(ptr);
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return hwdev;
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}
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EXPORT_SYMBOL_GPL(devm_hwmon_device_register_with_groups);
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#endif
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#endif /* < 3.13 */
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