/*
 * linux/sound/arm/pxa2xx-pcm.c -- ALSA PCM interface for the Intel PXA2xx chip
 *
 * Author:	Nicolas Pitre
 * Created:	Nov 30, 2004
 * Copyright:	(C) 2004 MontaVista Software, Inc.
 *
 * 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/module.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>

#include <mach/dma.h>

#include <sound/core.h>
#include <sound/pxa2xx-lib.h>
#include <sound/dmaengine_pcm.h>

#include "pxa2xx-pcm.h"

static int pxa2xx_pcm_prepare(struct snd_pcm_substream *substream)
{
	struct pxa2xx_pcm_client *client = substream->private_data;

	__pxa2xx_pcm_prepare(substream);

	return client->prepare(substream);
}

static int pxa2xx_pcm_open(struct snd_pcm_substream *substream)
{
	struct pxa2xx_pcm_client *client = substream->private_data;
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct pxa2xx_runtime_data *rtd;
	int ret;

	ret = __pxa2xx_pcm_open(substream);
	if (ret)
		goto out;

	rtd = runtime->private_data;

	rtd->params = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
		      client->playback_params : client->capture_params;

	ret = client->startup(substream);
	if (!ret)
		goto err2;

	return 0;

 err2:
	__pxa2xx_pcm_close(substream);
 out:
	return ret;
}

static int pxa2xx_pcm_close(struct snd_pcm_substream *substream)
{
	struct pxa2xx_pcm_client *client = substream->private_data;

	client->shutdown(substream);

	return __pxa2xx_pcm_close(substream);
}

static struct snd_pcm_ops pxa2xx_pcm_ops = {
	.open		= pxa2xx_pcm_open,
	.close		= pxa2xx_pcm_close,
	.ioctl		= snd_pcm_lib_ioctl,
	.hw_params	= __pxa2xx_pcm_hw_params,
	.hw_free	= __pxa2xx_pcm_hw_free,
	.prepare	= pxa2xx_pcm_prepare,
	.trigger	= pxa2xx_pcm_trigger,
	.pointer	= pxa2xx_pcm_pointer,
	.mmap		= pxa2xx_pcm_mmap,
};

int pxa2xx_pcm_new(struct snd_card *card, struct pxa2xx_pcm_client *client,
		   struct snd_pcm **rpcm)
{
	struct snd_pcm *pcm;
	int play = client->playback_params ? 1 : 0;
	int capt = client->capture_params ? 1 : 0;
	int ret;

	ret = snd_pcm_new(card, "PXA2xx-PCM", 0, play, capt, &pcm);
	if (ret)
		goto out;

	pcm->private_data = client;
	pcm->private_free = pxa2xx_pcm_free_dma_buffers;

	ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
	if (ret)
		goto out;

	if (play) {
		int stream = SNDRV_PCM_STREAM_PLAYBACK;
		snd_pcm_set_ops(pcm, stream, &pxa2xx_pcm_ops);
		ret = pxa2xx_pcm_preallocate_dma_buffer(pcm, stream);
		if (ret)
			goto out;
	}
	if (capt) {
		int stream = SNDRV_PCM_STREAM_CAPTURE;
		snd_pcm_set_ops(pcm, stream, &pxa2xx_pcm_ops);
		ret = pxa2xx_pcm_preallocate_dma_buffer(pcm, stream);
		if (ret)
			goto out;
	}

	if (rpcm)
		*rpcm = pcm;
	ret = 0;

 out:
	return ret;
}

EXPORT_SYMBOL(pxa2xx_pcm_new);

MODULE_AUTHOR("Nicolas Pitre");
MODULE_DESCRIPTION("Intel PXA2xx PCM DMA module");
MODULE_LICENSE("GPL");
h=nds-private-remove&amp;id=949c2d0096753d518ef6e0bd8418c8086747196b'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb?h=nds-private-remove&amp;id=949c2d0096753d518ef6e0bd8418c8086747196b'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/dwc3?h=nds-private-remove&amp;id=949c2d0096753d518ef6e0bd8418c8086747196b'>dwc3</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/dwc3?h=nds-private-remove&amp;id=949c2d0096753d518ef6e0bd8418c8086747196b&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
s='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>Christoph Hellwig &lt;hch@lst.de&gt;</td><td class='right'>2017-01-30 13:15:41 +0100</td></tr>
<tr><th>committer</th><td>Bjorn Helgaas &lt;bhelgaas@google.com&gt;</td><td class='right'>2017-02-02 10:35:46 -0600</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/oss/aedsp16.c?h=nds-private-remove&amp;id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>dfef358bd1beb4e7b5c94eca944be9cd23dfc752</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/oss/aedsp16.c?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>b9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/oss/aedsp16.c?h=nds-private-remove&amp;id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>sound/oss/aedsp16.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/oss/aedsp16.c?h=nds-private-remove&amp;id=030305d69fc6963c16003f50d7e8d74b02d0a143'>030305d69fc6963c16003f50d7e8d74b02d0a143</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/oss/aedsp16.c?h=nds-private-remove&amp;id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752&amp;id2=030305d69fc6963c16003f50d7e8d74b02d0a143'>diff</a>)</td></tr></table>
<div class='commit-subject'>PCI/MSI: Don't apply affinity if there aren't enough vectors left</div><div class='commit-msg'>Bart reported a problem wіth an out of bounds access in the low-level IRQ
affinity code, which we root caused to the qla2xxx driver assigning all its
MSI-X vectors to the pre and post vectors, and not having any left for the
actually spread IRQs.

Fix this issue by not asking for affinity assignment when there are no
vectors to assign left.

Fixes: 402723ad5c62 ("PCI/MSI: Provide pci_alloc_irq_vectors_affinity()")
Link: https://lkml.kernel.org/r/1485359225.3093.3.camel@sandisk.com
Reported-by: Bart Van Assche &lt;bart.vanassche@sandisk.com&gt;
Tested-by: Bart Van Assche &lt;bart.vanassche@sandisk.com&gt;
Signed-off-by: Christoph Hellwig &lt;hch@lst.de&gt;
Signed-off-by: Bjorn Helgaas &lt;bhelgaas@google.com&gt;</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>Diffstat</a> (limited to 'sound/oss/aedsp16.c')</div><table summary='diffstat' class='diffstat'>