/******************************************************************************

    AudioScience HPI driver
    Copyright (C) 1997-2014  AudioScience Inc. <support@audioscience.com>

    This program is free software; you can redistribute it and/or modify
    it under the terms of version 2 of the GNU General Public License 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.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 Hardware Programming Interface (HPI) Utility functions.

 (C) Copyright AudioScience Inc. 2007
*******************************************************************************/

#include "hpi_internal.h"
#include "hpimsginit.h"

/* The actual message size for each object type */
static u16 msg_size[HPI_OBJ_MAXINDEX + 1] = HPI_MESSAGE_SIZE_BY_OBJECT;
/* The actual response size for each object type */
static u16 res_size[HPI_OBJ_MAXINDEX + 1] = HPI_RESPONSE_SIZE_BY_OBJECT;
/* Flag to enable alternate message type for SSX2 bypass. */
static u16 gwSSX2_bypass;

/** \internal
  * initialize the HPI message structure
  */
static void hpi_init_message(struct hpi_message *phm, u16 object,
	u16 function)
{
	u16 size;

	if ((object > 0) && (object <= HPI_OBJ_MAXINDEX))
		size = msg_size[object];
	else
		size = sizeof(*phm);

	memset(phm, 0, size);
	phm->size = size;

	if (gwSSX2_bypass)
		phm->type = HPI_TYPE_SSX2BYPASS_MESSAGE;
	else
		phm->type = HPI_TYPE_REQUEST;
	phm->object = object;
	phm->function = function;
	phm->version = 0;
	phm->adapter_index = HPI_ADAPTER_INDEX_INVALID;
	/* Expect actual adapter index to be set by caller */
}

/** \internal
  * initialize the HPI response structure
  */
void hpi_init_response(struct hpi_response *phr, u16 object, u16 function,
	u16 error)
{
	u16 size;

	if ((object > 0) && (object <= HPI_OBJ_MAXINDEX))
		size = res_size[object];
	else
		size = sizeof(*phr);

	memset(phr, 0, sizeof(*phr));
	phr->size = size;
	phr->type = HPI_TYPE_RESPONSE;
	phr->object = object;
	phr->function = function;
	phr->error = error;
	phr->specific_error = 0;
	phr->version = 0;
}

void hpi_init_message_response(struct hpi_message *phm,
	struct hpi_response *phr, u16 object, u16 function)
{
	hpi_init_message(phm, object, function);
	/* default error return if the response is
	   not filled in by the callee */
	hpi_init_response(phr, object, function,
		HPI_ERROR_PROCESSING_MESSAGE);
}

static void hpi_init_messageV1(struct hpi_message_header *phm, u16 size,
	u16 object, u16 function)
{
	memset(phm, 0, size);
	if ((object > 0) && (object <= HPI_OBJ_MAXINDEX)) {
		phm->size = size;
		phm->type = HPI_TYPE_REQUEST;
		phm->object = object;
		phm->function = function;
		phm->version = 1;
		/* Expect adapter index to be set by caller */
	}
}

void hpi_init_responseV1(struct hpi_response_header *phr, u16 size,
	u16 object, u16 function)
{
	(void)object;
	(void)function;
	memset(phr, 0, size);
	phr->size = size;
	phr->version = 1;
	phr->type = HPI_TYPE_RESPONSE;
	phr->error = HPI_ERROR_PROCESSING_MESSAGE;
}

void hpi_init_message_responseV1(struct hpi_message_header *phm, u16 msg_size,
	struct hpi_response_header *phr, u16 res_size, u16 object,
	u16 function)
{
	hpi_init_messageV1(phm, msg_size, object, function);
	hpi_init_responseV1(phr, res_size, object, function);
}
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/soc/intel/common?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>dfef358bd1beb4e7b5c94eca944be9cd23dfc752</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/soc/intel/common?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>b9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/intel/common?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>sound/soc/intel/common</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/intel/common?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>030305d69fc6963c16003f50d7e8d74b02d0a143</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/intel/common?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/?id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>Diffstat</a> (limited to 'sound/soc/intel/common')</div><table summary='diffstat' class='diffstat'>