Release 4.11 drivers/vfio/platform/vfio_platform_common.c

Directory: drivers/vfio/platform
/*
 * Copyright (C) 2013 - Virtual Open Systems
 * Author: Antonios Motakis <a.motakis@virtualopensystems.com>
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/device.h>
#include <linux/acpi.h>
#include <linux/iommu.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/uaccess.h>
#include <linux/vfio.h>

#include "vfio_platform_private.h"


#define DRIVER_VERSION  "0.10"

#define DRIVER_AUTHOR   "Antonios Motakis <a.motakis@virtualopensystems.com>"

#define DRIVER_DESC     "VFIO platform base module"


#define VFIO_PLATFORM_IS_ACPI(vdev) ((vdev)->acpihid != NULL)

static LIST_HEAD(reset_list);
static DEFINE_MUTEX(driver_lock);



static vfio_platform_reset_fn_t vfio_platform_lookup_reset(const char *compat,
					struct module **module)
{
	struct vfio_platform_reset_node *iter;
	vfio_platform_reset_fn_t reset_fn = NULL;

	mutex_lock(&driver_lock);
	list_for_each_entry(iter, &reset_list, link) {
		if (!strcmp(iter->compat, compat) &&
			try_module_get(iter->owner)) {
			*module = iter->owner;
			reset_fn = iter->of_reset;
			break;
		}
	}
	mutex_unlock(&driver_lock);
	return reset_fn;
}

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Sinan Kaya 1 1.15% 1 33.33%
Total 87 100.00% 3 100.00%



static int vfio_platform_acpi_probe(struct vfio_platform_device *vdev,
				    struct device *dev)
{
	struct acpi_device *adev;

	if (acpi_disabled)
		return -ENOENT;

	adev = ACPI_COMPANION(dev);
	if (!adev) {
		pr_err("VFIO: ACPI companion device not found for %s\n",
			vdev->name);
		return -ENODEV;
	}

#ifdef CONFIG_ACPI
	vdev->acpihid = acpi_device_hid(adev);
#endif
	return WARN_ON(!vdev->acpihid) ? -EINVAL : 0;
}

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static int vfio_platform_acpi_call_reset(struct vfio_platform_device *vdev,
				  const char **extra_dbg)
{
#ifdef CONFIG_ACPI
	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
	struct device *dev = vdev->device;
	acpi_handle handle = ACPI_HANDLE(dev);
	acpi_status acpi_ret;

	acpi_ret = acpi_evaluate_object(handle, "_RST", NULL, &buffer);
	if (ACPI_FAILURE(acpi_ret)) {
		if (extra_dbg)
			*extra_dbg = acpi_format_exception(acpi_ret);
		return -EINVAL;
	}

	return 0;
#else
	return -ENOENT;
#endif
}

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Total 100 100.00% 2 100.00%



static bool vfio_platform_acpi_has_reset(struct vfio_platform_device *vdev)
{
#ifdef CONFIG_ACPI
	struct device *dev = vdev->device;
	acpi_handle handle = ACPI_HANDLE(dev);

	return acpi_has_method(handle, "_RST");
#else
	return false;
#endif
}

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Total 46 100.00% 2 100.00%



static bool vfio_platform_has_reset(struct vfio_platform_device *vdev)
{
	if (VFIO_PLATFORM_IS_ACPI(vdev))
		return vfio_platform_acpi_has_reset(vdev);

	return vdev->of_reset ? true : false;
}

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static int vfio_platform_get_reset(struct vfio_platform_device *vdev)
{
	if (VFIO_PLATFORM_IS_ACPI(vdev))
		return vfio_platform_acpi_has_reset(vdev) ? 0 : -ENOENT;

	vdev->of_reset = vfio_platform_lookup_reset(vdev->compat,
						    &vdev->reset_module);
	if (!vdev->of_reset) {
		request_module("vfio-reset:%s", vdev->compat);
		vdev->of_reset = vfio_platform_lookup_reset(vdev->compat,
							&vdev->reset_module);
	}

	return vdev->of_reset ? 0 : -ENOENT;
}

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Kees Cook 1 1.12% 1 16.67%
Total 89 100.00% 6 100.00%



static void vfio_platform_put_reset(struct vfio_platform_device *vdev)
{
	if (VFIO_PLATFORM_IS_ACPI(vdev))
		return;

	if (vdev->of_reset)
		module_put(vdev->reset_module);
}

Contributors
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Eric Auger 23 71.88% 2 50.00%
Sinan Kaya 9 28.12% 2 50.00%
Total 32 100.00% 4 100.00%



static int vfio_platform_regions_init(struct vfio_platform_device *vdev)
{
	int cnt = 0, i;

	while (vdev->get_resource(vdev, cnt))
		cnt++;

	vdev->regions = kcalloc(cnt, sizeof(struct vfio_platform_region),
				GFP_KERNEL);
	if (!vdev->regions)
		return -ENOMEM;

	for (i = 0; i < cnt;  i++) {
		struct resource *res =
			vdev->get_resource(vdev, i);

		if (!res)
			goto err;

		vdev->regions[i].addr = res->start;
		vdev->regions[i].size = resource_size(res);
		vdev->regions[i].flags = 0;

		switch (resource_type(res)) {
		case IORESOURCE_MEM:
			vdev->regions[i].type = VFIO_PLATFORM_REGION_TYPE_MMIO;
			vdev->regions[i].flags |= VFIO_REGION_INFO_FLAG_READ;
			if (!(res->flags & IORESOURCE_READONLY))
				vdev->regions[i].flags |=
					VFIO_REGION_INFO_FLAG_WRITE;

			/*
                         * Only regions addressed with PAGE granularity may be
                         * MMAPed securely.
                         */
			if (!(vdev->regions[i].addr & ~PAGE_MASK) &&
					!(vdev->regions[i].size & ~PAGE_MASK))
				vdev->regions[i].flags |=
					VFIO_REGION_INFO_FLAG_MMAP;

			break;
		case IORESOURCE_IO:
			vdev->regions[i].type = VFIO_PLATFORM_REGION_TYPE_PIO;
			break;
		default:
			goto err;
		}
	}

	vdev->num_regions = cnt;

	return 0;
err:
	kfree(vdev->regions);
	return -EINVAL;
}

Contributors
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Antonios Motakis 277 100.00% 3 100.00%
Total 277 100.00% 3 100.00%



static void vfio_platform_regions_cleanup(struct vfio_platform_device *vdev)
{
	int i;

	for (i = 0; i < vdev->num_regions; i++)
		iounmap(vdev->regions[i].ioaddr);

	vdev->num_regions = 0;
	kfree(vdev->regions);
}

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Total 54 100.00% 2 100.00%



static int vfio_platform_call_reset(struct vfio_platform_device *vdev,
				    const char **extra_dbg)
{
	if (VFIO_PLATFORM_IS_ACPI(vdev)) {
		dev_info(vdev->device, "reset\n");
		return vfio_platform_acpi_call_reset(vdev, extra_dbg);
	} else if (vdev->of_reset) {
		dev_info(vdev->device, "reset\n");
		return vdev->of_reset(vdev);
	}

	dev_warn(vdev->device, "no reset function found!\n");
	return -EINVAL;
}

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Eric Auger 31 37.80% 2 25.00%
Antonios Motakis 7 8.54% 2 25.00%
Total 82 100.00% 8 100.00%



static void vfio_platform_release(void *device_data)
{
	struct vfio_platform_device *vdev = device_data;

	mutex_lock(&driver_lock);

	if (!(--vdev->refcnt)) {
		const char *extra_dbg = NULL;
		int ret;

		ret = vfio_platform_call_reset(vdev, &extra_dbg);
		if (ret && vdev->reset_required) {
			dev_warn(vdev->device, "reset driver is required and reset call failed in release (%d) %s\n",
				 ret, extra_dbg ? extra_dbg : "");
			WARN_ON(1);
		}
		vfio_platform_regions_cleanup(vdev);
		vfio_platform_irq_cleanup(vdev);
	}

	mutex_unlock(&driver_lock);

	module_put(vdev->parent_module);
}

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Sinan Kaya 85 77.27% 3 42.86%
Antonios Motakis 22 20.00% 3 42.86%
Eric Auger 3 2.73% 1 14.29%
Total 110 100.00% 7 100.00%



static int vfio_platform_open(void *device_data)
{
	struct vfio_platform_device *vdev = device_data;
	int ret;

	if (!try_module_get(vdev->parent_module))
		return -ENODEV;

	mutex_lock(&driver_lock);

	if (!vdev->refcnt) {
		const char *extra_dbg = NULL;

		ret = vfio_platform_regions_init(vdev);
		if (ret)
			goto err_reg;

		ret = vfio_platform_irq_init(vdev);
		if (ret)
			goto err_irq;

		ret = vfio_platform_call_reset(vdev, &extra_dbg);
		if (ret && vdev->reset_required) {
			dev_warn(vdev->device, "reset driver is required and reset call failed in open (%d) %s\n",
				 ret, extra_dbg ? extra_dbg : "");
			goto err_rst;
		}
	}

	vdev->refcnt++;

	mutex_unlock(&driver_lock);
	return 0;

err_rst:
	vfio_platform_irq_cleanup(vdev);
err_irq:
	vfio_platform_regions_cleanup(vdev);
err_reg:
	mutex_unlock(&driver_lock);
	module_put(THIS_MODULE);
	return ret;
}

Contributors
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Antonios Motakis 111 66.07% 3 37.50%
Sinan Kaya 50 29.76% 3 37.50%
Eric Auger 7 4.17% 2 25.00%
Total 168 100.00% 8 100.00%



static long vfio_platform_ioctl(void *device_data,
				unsigned int cmd, unsigned long arg)
{
	struct vfio_platform_device *vdev = device_data;
	unsigned long minsz;

	if (cmd == VFIO_DEVICE_GET_INFO) {
		struct vfio_device_info info;

		minsz = offsetofend(struct vfio_device_info, num_irqs);

		if (copy_from_user(&info, (void __user *)arg, minsz))
			return -EFAULT;

		if (info.argsz < minsz)
			return -EINVAL;

		if (vfio_platform_has_reset(vdev))
			vdev->flags |= VFIO_DEVICE_FLAGS_RESET;
		info.flags = vdev->flags;
		info.num_regions = vdev->num_regions;
		info.num_irqs = vdev->num_irqs;

		return copy_to_user((void __user *)arg, &info, minsz) ?
			-EFAULT : 0;

	} else if (cmd == VFIO_DEVICE_GET_REGION_INFO) {
		struct vfio_region_info info;

		minsz = offsetofend(struct vfio_region_info, offset);

		if (copy_from_user(&info, (void __user *)arg, minsz))
			return -EFAULT;

		if (info.argsz < minsz)
			return -EINVAL;

		if (info.index >= vdev->num_regions)
			return -EINVAL;

		/* map offset to the physical address  */
		info.offset = VFIO_PLATFORM_INDEX_TO_OFFSET(info.index);
		info.size = vdev->regions[info.index].size;
		info.flags = vdev->regions[info.index].flags;

		return copy_to_user((void __user *)arg, &info, minsz) ?
			-EFAULT : 0;

	} else if (cmd == VFIO_DEVICE_GET_IRQ_INFO) {
		struct vfio_irq_info info;

		minsz = offsetofend(struct vfio_irq_info, count);

		if (copy_from_user(&info, (void __user *)arg, minsz))
			return -EFAULT;

		if (info.argsz < minsz)
			return -EINVAL;

		if (info.index >= vdev->num_irqs)
			return -EINVAL;

		info.flags = vdev->irqs[info.index].flags;
		info.count = vdev->irqs[info.index].count;

		return copy_to_user((void __user *)arg, &info, minsz) ?
			-EFAULT : 0;

	} else if (cmd == VFIO_DEVICE_SET_IRQS) {
		struct vfio_irq_set hdr;
		u8 *data = NULL;
		int ret = 0;
		size_t data_size = 0;

		minsz = offsetofend(struct vfio_irq_set, count);

		if (copy_from_user(&hdr, (void __user *)arg, minsz))
			return -EFAULT;

		ret = vfio_set_irqs_validate_and_prepare(&hdr, vdev->num_irqs,
						 vdev->num_irqs, &data_size);
		if (ret)
			return ret;

		if (data_size) {
			data = memdup_user((void __user *)(arg + minsz),
					    data_size);
			if (IS_ERR(data))
				return PTR_ERR(data);
		}

		mutex_lock(&vdev->igate);

		ret = vfio_platform_set_irqs_ioctl(vdev, hdr.flags, hdr.index,
						   hdr.start, hdr.count, data);
		mutex_unlock(&vdev->igate);
		kfree(data);

		return ret;

	} else if (cmd == VFIO_DEVICE_RESET) {
		return vfio_platform_call_reset(vdev, NULL);
	}

	return -ENOTTY;
}

Contributors
Person Tokens Prop Commits CommitProp
Antonios Motakis 529 89.81% 5 45.45%
Kirti Wankhede 22 3.74% 1 9.09%
Eric Auger 17 2.89% 1 9.09%
Michael S. Tsirkin 15 2.55% 1 9.09%
Sinan Kaya 6 1.02% 3 27.27%
Total 589 100.00% 11 100.00%



static ssize_t vfio_platform_read_mmio(struct vfio_platform_region *reg,
				       char __user *buf, size_t count,
				       loff_t off)
{
	unsigned int done = 0;

	if (!reg->ioaddr) {
		reg->ioaddr =
			ioremap_nocache(reg->addr, reg->size);

		if (!reg->ioaddr)
			return -ENOMEM;
	}

	while (count) {
		size_t filled;

		if (count >= 4 && !(off % 4)) {
			u32 val;

			val = ioread32(reg->ioaddr + off);
			if (copy_to_user(buf, &val, 4))
				goto err;

			filled = 4;
		} else if (count >= 2 && !(off % 2)) {
			u16 val;

			val = ioread16(reg->ioaddr + off);
			if (copy_to_user(buf, &val, 2))
				goto err;

			filled = 2;
		} else {
			u8 val;

			val = ioread8(reg->ioaddr + off);
			if (copy_to_user(buf, &val, 1))
				goto err;

			filled = 1;
		}


		count -= filled;
		done += filled;
		off += filled;
		buf += filled;
	}

	return done;
err:
	return -EFAULT;
}

Contributors
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Antonios Motakis 221 96.09% 2 66.67%
James Morse 9 3.91% 1 33.33%
Total 230 100.00% 3 100.00%



static ssize_t vfio_platform_read(void *device_data, char __user *buf,
				  size_t count, loff_t *ppos)
{
	struct vfio_platform_device *vdev = device_data;
	unsigned int index = VFIO_PLATFORM_OFFSET_TO_INDEX(*ppos);
	loff_t off = *ppos & VFIO_PLATFORM_OFFSET_MASK;

	if (index >= vdev->num_regions)
		return -EINVAL;

	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_READ))
		return -EINVAL;

	if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_MMIO)
		return vfio_platform_read_mmio(&vdev->regions[index],
							buf, count, off);
	else if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_PIO)
		return -EINVAL; /* not implemented */

	return -EINVAL;
}

Contributors
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Antonios Motakis 132 99.25% 2 66.67%
James Morse 1 0.75% 1 33.33%
Total 133 100.00% 3 100.00%



static ssize_t vfio_platform_write_mmio(struct vfio_platform_region *reg,
					const char __user *buf, size_t count,
					loff_t off)
{
	unsigned int done = 0;

	if (!reg->ioaddr) {
		reg->ioaddr =
			ioremap_nocache(reg->addr, reg->size);

		if (!reg->ioaddr)
			return -ENOMEM;
	}

	while (count) {
		size_t filled;

		if (count >= 4 && !(off % 4)) {
			u32 val;

			if (copy_from_user(&val, buf, 4))
				goto err;
			iowrite32(val, reg->ioaddr + off);

			filled = 4;
		} else if (count >= 2 && !(off % 2)) {
			u16 val;

			if (copy_from_user(&val, buf, 2))
				goto err;
			iowrite16(val, reg->ioaddr + off);

			filled = 2;
		} else {
			u8 val;

			if (copy_from_user(&val, buf, 1))
				goto err;
			iowrite8(val, reg->ioaddr + off);

			filled = 1;
		}

		count -= filled;
		done += filled;
		off += filled;
		buf += filled;
	}

	return done;
err:
	return -EFAULT;
}

Contributors
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Antonios Motakis 222 96.10% 1 50.00%
James Morse 9 3.90% 1 50.00%
Total 231 100.00% 2 100.00%



static ssize_t vfio_platform_write(void *device_data, const char __user *buf,
				   size_t count, loff_t *ppos)
{
	struct vfio_platform_device *vdev = device_data;
	unsigned int index = VFIO_PLATFORM_OFFSET_TO_INDEX(*ppos);
	loff_t off = *ppos & VFIO_PLATFORM_OFFSET_MASK;

	if (index >= vdev->num_regions)
		return -EINVAL;

	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_WRITE))
		return -EINVAL;

	if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_MMIO)
		return vfio_platform_write_mmio(&vdev->regions[index],
							buf, count, off);
	else if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_PIO)
		return -EINVAL; /* not implemented */

	return -EINVAL;
}

Contributors
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Antonios Motakis 133 99.25% 2 66.67%
James Morse 1 0.75% 1 33.33%
Total 134 100.00% 3 100.00%



static int vfio_platform_mmap_mmio(struct vfio_platform_region region,
				   struct vm_area_struct *vma)
{
	u64 req_len, pgoff, req_start;

	req_len = vma->vm_end - vma->vm_start;
	pgoff = vma->vm_pgoff &
		((1U << (VFIO_PLATFORM_OFFSET_SHIFT - PAGE_SHIFT)) - 1);
	req_start = pgoff << PAGE_SHIFT;

	if (region.size < PAGE_SIZE || req_start + req_len > region.size)
		return -EINVAL;

	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
	vma->vm_pgoff = (region.addr >> PAGE_SHIFT) + pgoff;

	return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
			       req_len, vma->vm_page_prot);
}

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Antonios Motakis 123 100.00% 1 100.00%
Total 123 100.00% 1 100.00%



static int vfio_platform_mmap(void *device_data, struct vm_area_struct *vma)
{
	struct vfio_platform_device *vdev = device_data;
	unsigned int index;

	index = vma->vm_pgoff >> (VFIO_PLATFORM_OFFSET_SHIFT - PAGE_SHIFT);

	if (vma->vm_end < vma->vm_start)
		return -EINVAL;
	if (!(vma->vm_flags & VM_SHARED))
		return -EINVAL;
	if (index >= vdev->num_regions)
		return -EINVAL;
	if (vma->vm_start & ~PAGE_MASK)
		return -EINVAL;
	if (vma->vm_end & ~PAGE_MASK)
		return -EINVAL;

	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_MMAP))
		return -EINVAL;

	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_READ)
			&& (vma->vm_flags & VM_READ))
		return -EINVAL;

	if (!(vdev->regions[index].flags & VFIO_REGION_INFO_FLAG_WRITE)
			&& (vma->vm_flags & VM_WRITE))
		return -EINVAL;

	vma->vm_private_data = vdev;

	if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_MMIO)
		return vfio_platform_mmap_mmio(vdev->regions[index], vma);

	else if (vdev->regions[index].type & VFIO_PLATFORM_REGION_TYPE_PIO)
		return -EINVAL; /* not implemented */

	return -EINVAL;
}

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Antonios Motakis 236 100.00% 2 100.00%
Total 236 100.00% 2 100.00%


static const struct vfio_device_ops vfio_platform_ops = {
	.name		= "vfio-platform",
	.open		= vfio_platform_open,
	.release	= vfio_platform_release,
	.ioctl		= vfio_platform_ioctl,
	.read		= vfio_platform_read,
	.write		= vfio_platform_write,
	.mmap		= vfio_platform_mmap,
};



static int vfio_platform_of_probe(struct vfio_platform_device *vdev,
			   struct device *dev)
{
	int ret;

	ret = device_property_read_string(dev, "compatible",
					  &vdev->compat);
	if (ret)
		pr_err("VFIO: cannot retrieve compat for %s\n",
			vdev->name);

	return ret;
}

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Sinan Kaya 48 97.96% 1 50.00%
Baoyou Xie 1 2.04% 1 50.00%
Total 49 100.00% 2 100.00%

/*
 * There can be two kernel build combinations. One build where
 * ACPI is not selected in Kconfig and another one with the ACPI Kconfig.
 *
 * In the first case, vfio_platform_acpi_probe will return since
 * acpi_disabled is 1. DT user will not see any kind of messages from
 * ACPI.
 *
 * In the second case, both DT and ACPI is compiled in but the system is
 * booting with any of these combinations.
 *
 * If the firmware is DT type, then acpi_disabled is 1. The ACPI probe routine
 * terminates immediately without any messages.
 *
 * If the firmware is ACPI type, then acpi_disabled is 0. All other checks are
 * valid checks. We cannot claim that this system is DT.
 */


int vfio_platform_probe_common(struct vfio_platform_device *vdev,
			       struct device *dev)
{
	struct iommu_group *group;
	int ret;

	if (!vdev)
		return -EINVAL;

	ret = vfio_platform_acpi_probe(vdev, dev);
	if (ret)
		ret = vfio_platform_of_probe(vdev, dev);

	if (ret)
		return ret;

	vdev->device = dev;

	ret = vfio_platform_get_reset(vdev);
	if (ret && vdev->reset_required) {
		pr_err("vfio: no reset function found for device %s\n",
		       vdev->name);
		return ret;
	}

	group = vfio_iommu_group_get(dev);
	if (!group) {
		pr_err("VFIO: No IOMMU group for device %s\n", vdev->name);
		return -EINVAL;
	}

	ret = vfio_add_group_dev(dev, &vfio_platform_ops, vdev);
	if (ret) {
		vfio_iommu_group_put(group, dev);
		return ret;
	}

	mutex_init(&vdev->igate);

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
Antonios Motakis 94 58.02% 2 28.57%
Sinan Kaya 42 25.93% 2 28.57%
Eric Auger 22 13.58% 2 28.57%
Peng Fan 4 2.47% 1 14.29%
Total 162 100.00% 7 100.00%


EXPORT_SYMBOL_GPL(vfio_platform_probe_common);



struct vfio_platform_device *vfio_platform_remove_common(struct device *dev)
{
	struct vfio_platform_device *vdev;

	vdev = vfio_del_group_dev(dev);

	if (vdev) {
		vfio_platform_put_reset(vdev);
		vfio_iommu_group_put(dev->iommu_group, dev);
	}

	return vdev;
}
Contributors
Person Tokens Prop Commits CommitProp
Antonios Motakis 37 78.72% 1 33.33%
Eric Auger 7 14.89% 1 33.33%
Peng Fan 3 6.38% 1 33.33%
Total 47 100.00% 3 100.00%


EXPORT_SYMBOL_GPL(vfio_platform_remove_common);



void __vfio_platform_register_reset(struct vfio_platform_reset_node *node)
{
	mutex_lock(&driver_lock);
	list_add(&node->link, &reset_list);
	mutex_unlock(&driver_lock);
}
Contributors
Person Tokens Prop Commits CommitProp
Eric Auger 33 100.00% 1 100.00%
Total 33 100.00% 1 100.00%


EXPORT_SYMBOL_GPL(__vfio_platform_register_reset);



void vfio_platform_unregister_reset(const char *compat,
				    vfio_platform_reset_fn_t fn)
{
	struct vfio_platform_reset_node *iter, *temp;

	mutex_lock(&driver_lock);
	list_for_each_entry_safe(iter, temp, &reset_list, link) {
		if (!strcmp(iter->compat, compat) && (iter->of_reset == fn)) {
			list_del(&iter->link);
			break;
		}
	}

	mutex_unlock(&driver_lock);

}
Contributors
Person Tokens Prop Commits CommitProp
Eric Auger 75 98.68% 1 50.00%
Sinan Kaya 1 1.32% 1 50.00%
Total 76 100.00% 2 100.00%


EXPORT_SYMBOL_GPL(vfio_platform_unregister_reset);


MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL v2");

MODULE_AUTHOR(DRIVER_AUTHOR);

MODULE_DESCRIPTION(DRIVER_DESC);
Overall Contributors
Person Tokens Prop Commits CommitProp
Antonios Motakis 2285 68.19% 7 24.14%
Sinan Kaya 590 17.61% 9 31.03%
Eric Auger 408 12.18% 7 24.14%
Kirti Wankhede 22 0.66% 1 3.45%
James Morse 20 0.60% 1 3.45%
Michael S. Tsirkin 15 0.45% 1 3.45%
Peng Fan 7 0.21% 1 3.45%
Baoyou Xie 3 0.09% 1 3.45%
Kees Cook 1 0.03% 1 3.45%
Total 3351 100.00% 29 100.00%
Directory: drivers/vfio/platform

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.
Person	Tokens	Prop	Commits	CommitProp
Eric Auger	86	98.85%	2	66.67%
Sinan Kaya	1	1.15%	1	33.33%
Total	87	100.00%	3	100.00%
cregit-Linux how code gets into the kernel

Release 4.11 drivers/vfio/platform/vfio_platform_common.c

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