diff options
Diffstat (limited to 'backport/compat/backport-3.13.c')
| -rw-r--r-- | backport/compat/backport-3.13.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/backport/compat/backport-3.13.c b/backport/compat/backport-3.13.c deleted file mode 100644 index 2b61711d..00000000 --- a/backport/compat/backport-3.13.c +++ /dev/null @@ -1,169 +0,0 @@ -/* - * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de> - * Copyright (c) 2013 Hannes Frederic Sowa <hannes@stressinduktion.org> - * Copyright (c) 2014 Luis R. Rodriguez <mcgrof@do-not-panic.com> - * - * Backport functionality introduced in Linux 3.13. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/version.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/pci.h> -#include <linux/device.h> -#include <linux/hwmon.h> -#include <linux/net.h> - -#ifdef __BACKPORT_NET_GET_RANDOM_ONCE -struct __net_random_once_work { - struct work_struct work; - struct static_key *key; -}; - -static void __net_random_once_deferred(struct work_struct *w) -{ - struct __net_random_once_work *work = - container_of(w, struct __net_random_once_work, work); - if (!static_key_enabled(work->key)) - static_key_slow_inc(work->key); - kfree(work); -} - -static void __net_random_once_disable_jump(struct static_key *key) -{ - struct __net_random_once_work *w; - - w = kmalloc(sizeof(*w), GFP_ATOMIC); - if (!w) - return; - - INIT_WORK(&w->work, __net_random_once_deferred); - w->key = key; - schedule_work(&w->work); -} - -bool __net_get_random_once(void *buf, int nbytes, bool *done, - struct static_key *done_key) -{ - static DEFINE_SPINLOCK(lock); - unsigned long flags; - - spin_lock_irqsave(&lock, flags); - if (*done) { - spin_unlock_irqrestore(&lock, flags); - return false; - } - - get_random_bytes(buf, nbytes); - *done = true; - spin_unlock_irqrestore(&lock, flags); - - __net_random_once_disable_jump(done_key); - - return true; -} -EXPORT_SYMBOL_GPL(__net_get_random_once); -#endif /* __BACKPORT_NET_GET_RANDOM_ONCE */ - -#ifdef CONFIG_PCI -#define pci_bus_read_dev_vendor_id LINUX_BACKPORT(pci_bus_read_dev_vendor_id) -static bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l, - int crs_timeout) -{ - int delay = 1; - - if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, l)) - return false; - - /* some broken boards return 0 or ~0 if a slot is empty: */ - if (*l == 0xffffffff || *l == 0x00000000 || - *l == 0x0000ffff || *l == 0xffff0000) - return false; - - /* - * Configuration Request Retry Status. Some root ports return the - * actual device ID instead of the synthetic ID (0xFFFF) required - * by the PCIe spec. Ignore the device ID and only check for - * (vendor id == 1). - */ - while ((*l & 0xffff) == 0x0001) { - if (!crs_timeout) - return false; - - msleep(delay); - delay *= 2; - if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, l)) - return false; - /* Card hasn't responded in 60 seconds? Must be stuck. */ - if (delay > crs_timeout) { - printk(KERN_WARNING "pci %04x:%02x:%02x.%d: not responding\n", - pci_domain_nr(bus), bus->number, PCI_SLOT(devfn), - PCI_FUNC(devfn)); - return false; - } - } - - return true; -} - -bool pci_device_is_present(struct pci_dev *pdev) -{ - u32 v; - - return pci_bus_read_dev_vendor_id(pdev->bus, pdev->devfn, &v, 0); -} -EXPORT_SYMBOL_GPL(pci_device_is_present); -#endif /* CONFIG_PCI */ - -#ifdef CONFIG_HWMON -struct device* -hwmon_device_register_with_groups(struct device *dev, const char *name, - void *drvdata, - const struct attribute_group **groups) -{ - struct device *hwdev; - - hwdev = hwmon_device_register(dev); - hwdev->groups = groups; - dev_set_drvdata(hwdev, drvdata); - return hwdev; -} - -static void devm_hwmon_release(struct device *dev, void *res) -{ - struct device *hwdev = *(struct device **)res; - - hwmon_device_unregister(hwdev); -} - -struct device * -devm_hwmon_device_register_with_groups(struct device *dev, const char *name, - void *drvdata, - const struct attribute_group **groups) -{ - struct device **ptr, *hwdev; - - if (!dev) - return ERR_PTR(-EINVAL); - - ptr = devres_alloc(devm_hwmon_release, sizeof(*ptr), GFP_KERNEL); - if (!ptr) - return ERR_PTR(-ENOMEM); - - hwdev = hwmon_device_register_with_groups(dev, name, drvdata, groups); - if (IS_ERR(hwdev)) - goto error; - - *ptr = hwdev; - devres_add(dev, ptr); - return hwdev; - -error: - devres_free(ptr); - return hwdev; -} -EXPORT_SYMBOL_GPL(devm_hwmon_device_register_with_groups); -#endif |