#include <linux/slab.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/fs.h>

#include <xen/page.h>

#include "xenfs.h"
#include "../xenbus/xenbus_comms.h"

static ssize_t xsd_read(struct file *file, char __user *buf,
			    size_t size, loff_t *off)
{
	const char *str = (const char *)file->private_data;
	return simple_read_from_buffer(buf, size, off, str, strlen(str));
}

static int xsd_release(struct inode *inode, struct file *file)
{
	kfree(file->private_data);
	return 0;
}

static int xsd_kva_open(struct inode *inode, struct file *file)
{
	file->private_data = (void *)kasprintf(GFP_KERNEL, "0x%p",
					       xen_store_interface);
	if (!file->private_data)
		return -ENOMEM;
	return 0;
}

static int xsd_kva_mmap(struct file *file, struct vm_area_struct *vma)
{
	size_t size = vma->vm_end - vma->vm_start;

	if ((size > PAGE_SIZE) || (vma->vm_pgoff != 0))
		return -EINVAL;

	if (remap_pfn_range(vma, vma->vm_start,
			    virt_to_pfn(xen_store_interface),
			    size, vma->vm_page_prot))
		return -EAGAIN;

	return 0;
}

const struct file_operations xsd_kva_file_ops = {
	.open = xsd_kva_open,
	.mmap = xsd_kva_mmap,
	.read = xsd_read,
	.release = xsd_release,
};

static int xsd_port_open(struct inode *inode, struct file *file)
{
	file->private_data = (void *)kasprintf(GFP_KERNEL, "%d",
					       xen_store_evtchn);
	if (!file->private_data)
		return -ENOMEM;
	return 0;
}

const struct file_operations xsd_port_file_ops = {
	.open = xsd_port_open,
	.read = xsd_read,
	.release = xsd_release,
};
>Tobias Klauser</td></tr></table>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=0b75f821ec8be459dd4dec77be39595d989d77ac'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?id=0b75f821ec8be459dd4dec77be39595d989d77ac'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci?id=0b75f821ec8be459dd4dec77be39595d989d77ac'>pci</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/hda?id=0b75f821ec8be459dd4dec77be39595d989d77ac'>hda</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/hda/patch_ca0132.c?id=0b75f821ec8be459dd4dec77be39595d989d77ac'>patch_ca0132.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='0b75f821ec8be459dd4dec77be39595d989d77ac'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-18 11:12:13 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-18 11:12:13 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/hda/patch_ca0132.c?id=0b75f821ec8be459dd4dec77be39595d989d77ac'>0b75f821ec8be459dd4dec77be39595d989d77ac</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/pci/hda/patch_ca0132.c?id=0b75f821ec8be459dd4dec77be39595d989d77ac'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=0b75f821ec8be459dd4dec77be39595d989d77ac'>8d5e5132ddf28928d44347c78102233b042f480e</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/pci/hda/patch_ca0132.c?id=0b75f821ec8be459dd4dec77be39595d989d77ac'>sound/pci/hda/patch_ca0132.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/hda/patch_ca0132.c?id=49b550fee80b5f36b961640666f7945d7ec63000'>49b550fee80b5f36b961640666f7945d7ec63000</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/pci/hda/patch_ca0132.c?id=0b75f821ec8be459dd4dec77be39595d989d77ac&amp;id2=49b550fee80b5f36b961640666f7945d7ec63000'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/hda/patch_ca0132.c?id=bc7c36eedb0c7004aa06c2afc3c5385adada8fa3'>bc7c36eedb0c7004aa06c2afc3c5385adada8fa3</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/pci/hda/patch_ca0132.c?id=0b75f821ec8be459dd4dec77be39595d989d77ac&amp;id2=bc7c36eedb0c7004aa06c2afc3c5385adada8fa3'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip</div><div class='commit-msg'>Pull timer fix from Ingo Molnar:
 "Fix a crash in the ARM-Exynos clocksource driver, triggered by CPU
  hotplug operations"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/exynos_mct: Clear interrupt when cpu is shut down
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=0b75f821ec8be459dd4dec77be39595d989d77ac'>Diffstat</a> (limited to 'sound/pci/hda/patch_ca0132.c')</div><table summary='diffstat' class='diffstat'>