/*
 * Squashfs - a compressed read only filesystem for Linux
 *
 * Copyright (c) 2010 LG Electronics
 * Chan Jeong <chan.jeong@lge.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2,
 * or (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * lzo_wrapper.c
 */

#include <linux/mutex.h>
#include <linux/buffer_head.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/lzo.h>

#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
#include "squashfs.h"
#include "decompressor.h"
#include "page_actor.h"

struct squashfs_lzo {
	void	*input;
	void	*output;
};

static void *lzo_init(struct squashfs_sb_info *msblk, void *buff)
{
	int block_size = max_t(int, msblk->block_size, SQUASHFS_METADATA_SIZE);

	struct squashfs_lzo *stream = kzalloc(sizeof(*stream), GFP_KERNEL);
	if (stream == NULL)
		goto failed;
	stream->input = vmalloc(block_size);
	if (stream->input == NULL)
		goto failed;
	stream->output = vmalloc(block_size);
	if (stream->output == NULL)
		goto failed2;

	return stream;

failed2:
	vfree(stream->input);
failed:
	ERROR("Failed to allocate lzo workspace\n");
	kfree(stream);
	return ERR_PTR(-ENOMEM);
}


static void lzo_free(void *strm)
{
	struct squashfs_lzo *stream = strm;

	if (stream) {
		vfree(stream->input);
		vfree(stream->output);
	}
	kfree(stream);
}


static int lzo_uncompress(struct squashfs_sb_info *msblk, void *strm,
	struct buffer_head **bh, int b, int offset, int length,
	struct squashfs_page_actor *output)
{
	struct squashfs_lzo *stream = strm;
	void *buff = stream->input, *data;
	int avail, i, bytes = length, res;
	size_t out_len = output->length;

	for (i = 0; i < b; i++) {
		avail = min(bytes, msblk->devblksize - offset);
		memcpy(buff, bh[i]->b_data + offset, avail);
		buff += avail;
		bytes -= avail;
		offset = 0;
		put_bh(bh[i]);
	}

	res = lzo1x_decompress_safe(stream->input, (size_t)length,
					stream->output, &out_len);
	if (res != LZO_E_OK)
		goto failed;

	res = bytes = (int)out_len;
	data = squashfs_first_page(output);
	buff = stream->output;
	while (data) {
		if (bytes <= PAGE_SIZE) {
			memcpy(data, buff, bytes);
			break;
		} else {
			memcpy(data, buff, PAGE_SIZE);
			buff += PAGE_SIZE;
			bytes -= PAGE_SIZE;
			data = squashfs_next_page(output);
		}
	}
	squashfs_finish_page(output);

	return res;

failed:
	return -EIO;
}

const struct squashfs_decompressor squashfs_lzo_comp_ops = {
	.init = lzo_init,
	.free = lzo_free,
	.decompress = lzo_uncompress,
	.id = LZO_COMPRESSION,
	.name = "lzo",
	.supported = 1
};
c?id=095cbe66973771fecd8e8b1e8763181363ef703e'>soc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/blackfin?id=095cbe66973771fecd8e8b1e8763181363ef703e'>blackfin</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/blackfin/bfin-eval-adau1x61.c?id=095cbe66973771fecd8e8b1e8763181363ef703e'>bfin-eval-adau1x61.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='095cbe66973771fecd8e8b1e8763181363ef703e'/><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'>2017-01-22 12:47:48 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-22 12:47:48 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/blackfin/bfin-eval-adau1x61.c?id=095cbe66973771fecd8e8b1e8763181363ef703e'>095cbe66973771fecd8e8b1e8763181363ef703e</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/soc/blackfin/bfin-eval-adau1x61.c?id=095cbe66973771fecd8e8b1e8763181363ef703e'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=095cbe66973771fecd8e8b1e8763181363ef703e'>c361a93d62ed171ac958deb0d4ff0faa980bb290</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/blackfin/bfin-eval-adau1x61.c?id=095cbe66973771fecd8e8b1e8763181363ef703e'>sound/soc/blackfin/bfin-eval-adau1x61.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/blackfin/bfin-eval-adau1x61.c?id=24b86839fab8e8059d2b16e0067dc86a1a0d3514'>24b86839fab8e8059d2b16e0067dc86a1a0d3514</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/blackfin/bfin-eval-adau1x61.c?id=095cbe66973771fecd8e8b1e8763181363ef703e&amp;id2=24b86839fab8e8059d2b16e0067dc86a1a0d3514'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/blackfin/bfin-eval-adau1x61.c?id=020eb3daaba2857b32c4cf4c82f503d6a00a67de'>020eb3daaba2857b32c4cf4c82f503d6a00a67de</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/blackfin/bfin-eval-adau1x61.c?id=095cbe66973771fecd8e8b1e8763181363ef703e&amp;id2=020eb3daaba2857b32c4cf4c82f503d6a00a67de'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip</div><div class='commit-msg'>Pull x86 fix from Thomas Gleixner:
 "Restore the retrigger callbacks in the IO APIC irq chips. That
  addresses a long standing regression which got introduced with the
  rewrite of the x86 irq subsystem two years ago and went unnoticed so
  far"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ioapic: Restore IO-APIC irq_chip retrigger callback
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=095cbe66973771fecd8e8b1e8763181363ef703e'>Diffstat</a> (limited to 'sound/soc/blackfin/bfin-eval-adau1x61.c')</div><table summary='diffstat' class='diffstat'>