[mirror_ubuntu-artful-kernel.git] / drivers / mmc / core / sdio.c

/*
 *  linux/drivers/mmc/sdio.c
 *
 *  Copyright 2006-2007 Pierre Ossman
 *
 * 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 of the License, or (at
 * your option) any later version.
 */

#include <linux/err.h>

#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sdio_func.h>

#include "core.h"
#include "bus.h"
#include "sdio_bus.h"
#include "mmc_ops.h"
#include "sd_ops.h"
#include "sdio_ops.h"
#include "sdio_cis.h"

static int sdio_read_fbr(struct sdio_func *func)
{
	int ret;
	unsigned char data;

	ret = mmc_io_rw_direct(func->card, 0, 0,
		SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF, 0, &data);
	if (ret)
		goto out;

	data &= 0x0f;

	if (data == 0x0f) {
		ret = mmc_io_rw_direct(func->card, 0, 0,
			SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF_EXT, 0, &data);
		if (ret)
			goto out;
	}

	func->class = data;

out:
	return ret;
}

static int sdio_init_func(struct mmc_card *card, unsigned int fn)
{
	int ret;
	struct sdio_func *func;

	BUG_ON(fn > SDIO_MAX_FUNCS);

	func = sdio_alloc_func(card);
	if (IS_ERR(func))
		return PTR_ERR(func);

	func->num = fn;

	ret = sdio_read_fbr(func);
	if (ret)
		goto fail;

	ret = sdio_read_func_cis(func);
	if (ret)
		goto fail;

	card->sdio_func[fn - 1] = func;

	return 0;

fail:
	/*
	 * It is okay to remove the function here even though we hold
	 * the host lock as we haven't registered the device yet.
	 */
	sdio_remove_func(func);
	return ret;
}

static int sdio_read_cccr(struct mmc_card *card)
{
	int ret;
	int cccr_vsn;
	unsigned char data;

	memset(&card->cccr, 0, sizeof(struct sdio_cccr));

	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CCCR, 0, &data);
	if (ret)
		goto out;

	cccr_vsn = data & 0x0f;

	if (cccr_vsn > SDIO_CCCR_REV_1_20) {
		printk(KERN_ERR "%s: unrecognised CCCR structure version %d\n",
			mmc_hostname(card->host), cccr_vsn);
		return -EINVAL;
	}

	card->cccr.sdio_vsn = (data & 0xf0) >> 4;

	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CAPS, 0, &data);
	if (ret)
		goto out;

	if (data & SDIO_CCCR_CAP_SMB)
		card->cccr.multi_block = 1;
	if (data & SDIO_CCCR_CAP_LSC)
		card->cccr.low_speed = 1;
	if (data & SDIO_CCCR_CAP_4BLS)
		card->cccr.wide_bus = 1;

	if (cccr_vsn >= SDIO_CCCR_REV_1_10) {
		ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_POWER, 0, &data);
		if (ret)
			goto out;

		if (data & SDIO_POWER_SMPC)
			card->cccr.high_power = 1;
	}

	if (cccr_vsn >= SDIO_CCCR_REV_1_20) {
		ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &data);
		if (ret)
			goto out;

		if (data & SDIO_SPEED_SHS)
			card->cccr.high_speed = 1;
	}

out:
	return ret;
}

static int sdio_enable_wide(struct mmc_card *card)
{
	int ret;
	u8 ctrl;

	if (!(card->host->caps & MMC_CAP_4_BIT_DATA))
		return 0;

	if (card->cccr.low_speed && !card->cccr.wide_bus)
		return 0;

	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl);
	if (ret)
		return ret;

	ctrl |= SDIO_BUS_WIDTH_4BIT;

	ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL);
	if (ret)
		return ret;

	mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);

	return 0;
}

/*
 * Test if the card supports high-speed mode and, if so, switch to it.
 */
static int sdio_enable_hs(struct mmc_card *card)
{
	int ret;
	u8 speed;

	if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED))
		return 0;

	if (!card->cccr.high_speed)
		return 0;

	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed);
	if (ret)
		return ret;

	speed |= SDIO_SPEED_EHS;

	ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_SPEED, speed, NULL);
	if (ret)
		return ret;

	mmc_card_set_highspeed(card);
	mmc_set_timing(card->host, MMC_TIMING_SD_HS);

	return 0;
}

/*
 * Host is being removed. Free up the current card.
 */
static void mmc_sdio_remove(struct mmc_host *host)
{
	int i;

	BUG_ON(!host);
	BUG_ON(!host->card);

	for (i = 0;i < host->card->sdio_funcs;i++) {
		if (host->card->sdio_func[i]) {
			sdio_remove_func(host->card->sdio_func[i]);
			host->card->sdio_func[i] = NULL;
		}
	}

	mmc_remove_card(host->card);
	host->card = NULL;
}

/*
 * Card detection callback from host.
 */
static void mmc_sdio_detect(struct mmc_host *host)
{
	int err;

	BUG_ON(!host);
	BUG_ON(!host->card);

	mmc_claim_host(host);

	/*
	 * Just check if our card has been removed.
	 */
	err = mmc_select_card(host->card);

	mmc_release_host(host);

	if (err) {
		mmc_sdio_remove(host);

		mmc_claim_host(host);
		mmc_detach_bus(host);
		mmc_release_host(host);
	}
}


static const struct mmc_bus_ops mmc_sdio_ops = {
	.remove = mmc_sdio_remove,
	.detect = mmc_sdio_detect,
};


/*
 * Starting point for SDIO card init.
 */
int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
{
	int err;
	int i, funcs;
	struct mmc_card *card;

	BUG_ON(!host);
	WARN_ON(!host->claimed);

	mmc_attach_bus(host, &mmc_sdio_ops);

	/*
	 * Sanity check the voltages that the card claims to
	 * support.
	 */
	if (ocr & 0x7F) {
		printk(KERN_WARNING "%s: card claims to support voltages "
		       "below the defined range. These will be ignored.\n",
		       mmc_hostname(host));
		ocr &= ~0x7F;
	}

	host->ocr = mmc_select_voltage(host, ocr);

	/*
	 * Can we support the voltage(s) of the card(s)?
	 */
	if (!host->ocr) {
		err = -EINVAL;
		goto err;
	}

	/*
	 * Inform the card of the voltage
	 */
	err = mmc_send_io_op_cond(host, host->ocr, &ocr);
	if (err)
		goto err;

	/*
	 * For SPI, enable CRC as appropriate.
	 */
	if (mmc_host_is_spi(host)) {
		err = mmc_spi_set_crc(host, use_spi_crc);
		if (err)
			goto err;
	}

	/*
	 * The number of functions on the card is encoded inside
	 * the ocr.
	 */
	funcs = (ocr & 0x70000000) >> 28;

	/*
	 * Allocate card structure.
	 */
	card = mmc_alloc_card(host, NULL);
	if (IS_ERR(card)) {
		err = PTR_ERR(card);
		goto err;
	}

	card->type = MMC_TYPE_SDIO;
	card->sdio_funcs = funcs;

	host->card = card;

	/*
	 * For native busses:  set card RCA and quit open drain mode.
	 */
	if (!mmc_host_is_spi(host)) {
		err = mmc_send_relative_addr(host, &card->rca);
		if (err)
			goto remove;

		mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
	}

	/*
	 * Select card, as all following commands rely on that.
	 */
	if (!mmc_host_is_spi(host)) {
		err = mmc_select_card(card);
		if (err)
			goto remove;
	}

	/*
	 * Read the common registers.
	 */
	err = sdio_read_cccr(card);
	if (err)
		goto remove;

	/*
	 * Read the common CIS tuples.
	 */
	err = sdio_read_common_cis(card);
	if (err)
		goto remove;

	/*
	 * Switch to high-speed (if supported).
	 */
	err = sdio_enable_hs(card);
	if (err)
		goto remove;

	/*
	 * Change to the card's maximum speed.
	 */
	if (mmc_card_highspeed(card)) {
		/*
		 * The SDIO specification doesn't mention how
		 * the CIS transfer speed register relates to
		 * high-speed, but it seems that 50 MHz is
		 * mandatory.
		 */
		mmc_set_clock(host, 50000000);
	} else {
		mmc_set_clock(host, card->cis.max_dtr);
	}

	/*
	 * Switch to wider bus (if supported).
	 */
	err = sdio_enable_wide(card);
	if (err)
		goto remove;

	/*
	 * Initialize (but don't add) all present functions.
	 */
	for (i = 0;i < funcs;i++) {
		err = sdio_init_func(host->card, i + 1);
		if (err)
			goto remove;
	}

	mmc_release_host(host);

	/*
	 * First add the card to the driver model...
	 */
	err = mmc_add_card(host->card);
	if (err)
		goto remove_added;

	/*
	 * ...then the SDIO functions.
	 */
	for (i = 0;i < funcs;i++) {
		err = sdio_add_func(host->card->sdio_func[i]);
		if (err)
			goto remove_added;
	}

	return 0;


remove_added:
	/* Remove without lock if the device has been added. */
	mmc_sdio_remove(host);
	mmc_claim_host(host);
remove:
	/* And with lock if it hasn't been added. */
	if (host->card)
		mmc_sdio_remove(host);
err:
	mmc_detach_bus(host);
	mmc_release_host(host);

	printk(KERN_ERR "%s: error %d whilst initialising SDIO card\n",
		mmc_hostname(host), err);

	return err;
}
Commit	Line	Data
5c4e6f13 PO	1	/*
	2	* linux/drivers/mmc/sdio.c
	3	*
	4	* Copyright 2006-2007 Pierre Ossman
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or (at
	9	* your option) any later version.
	10	*/
	11
	12	#include <linux/err.h>
	13
	14	#include <linux/mmc/host.h>
	15	#include <linux/mmc/card.h>
35c66c19	16	#include <linux/mmc/sdio.h>
e29a7d73	17	#include <linux/mmc/sdio_func.h>
5c4e6f13 PO	18
	19	#include "core.h"
	20	#include "bus.h"
e29a7d73	21	#include "sdio_bus.h"
5c4e6f13 PO	22	#include "mmc_ops.h"
	23	#include "sd_ops.h"
	24	#include "sdio_ops.h"
b7261261	25	#include "sdio_cis.h"
5c4e6f13	26
0597007f PO	27	static int sdio_read_fbr(struct sdio_func *func)
	28	{
	29	int ret;
	30	unsigned char data;
	31
	32	ret = mmc_io_rw_direct(func->card, 0, 0,
7616ee95	33	SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF, 0, &data);
0597007f PO	34	if (ret)
	35	goto out;
	36
	37	data &= 0x0f;
	38
	39	if (data == 0x0f) {
	40	ret = mmc_io_rw_direct(func->card, 0, 0,
7616ee95	41	SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF_EXT, 0, &data);
0597007f PO	42	if (ret)
	43	goto out;
	44	}
	45
	46	func->class = data;
	47
	48	out:
	49	return ret;
	50	}
	51
e29a7d73 PO	52	static int sdio_init_func(struct mmc_card *card, unsigned int fn)
e29a7d73 PO	53	{
0597007f	54	int ret;
e29a7d73 PO	55	struct sdio_func *func;
	56
	57	BUG_ON(fn > SDIO_MAX_FUNCS);
	58
	59	func = sdio_alloc_func(card);
	60	if (IS_ERR(func))
	61	return PTR_ERR(func);
	62
	63	func->num = fn;
	64
0597007f PO	65	ret = sdio_read_fbr(func);
	66	if (ret)
	67	goto fail;
	68
1a632f8c	69	ret = sdio_read_func_cis(func);
b7261261 NP	70	if (ret)
	71	goto fail;
	72
e29a7d73 PO	73	card->sdio_func[fn - 1] = func;
	74
	75	return 0;
0597007f PO	76
	77	fail:
	78	/*
	79	* It is okay to remove the function here even though we hold
	80	* the host lock as we haven't registered the device yet.
	81	*/
	82	sdio_remove_func(func);
	83	return ret;
e29a7d73 PO	84	}
e29a7d73 PO	85
35c66c19 PO	86	static int sdio_read_cccr(struct mmc_card *card)
	87	{
	88	int ret;
	89	int cccr_vsn;
	90	unsigned char data;
	91
	92	memset(&card->cccr, 0, sizeof(struct sdio_cccr));
	93
	94	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CCCR, 0, &data);
	95	if (ret)
	96	goto out;
	97
	98	cccr_vsn = data & 0x0f;
	99
	100	if (cccr_vsn > SDIO_CCCR_REV_1_20) {
	101	printk(KERN_ERR "%s: unrecognised CCCR structure version %d\n",
	102	mmc_hostname(card->host), cccr_vsn);
	103	return -EINVAL;
	104	}
	105
	106	card->cccr.sdio_vsn = (data & 0xf0) >> 4;
	107
	108	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CAPS, 0, &data);
	109	if (ret)
	110	goto out;
	111
	112	if (data & SDIO_CCCR_CAP_SMB)
	113	card->cccr.multi_block = 1;
	114	if (data & SDIO_CCCR_CAP_LSC)
	115	card->cccr.low_speed = 1;
	116	if (data & SDIO_CCCR_CAP_4BLS)
	117	card->cccr.wide_bus = 1;
	118
	119	if (cccr_vsn >= SDIO_CCCR_REV_1_10) {
	120	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_POWER, 0, &data);
	121	if (ret)
	122	goto out;
	123
	124	if (data & SDIO_POWER_SMPC)
	125	card->cccr.high_power = 1;
	126	}
	127
	128	if (cccr_vsn >= SDIO_CCCR_REV_1_20) {
	129	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &data);
	130	if (ret)
	131	goto out;
	132
	133	if (data & SDIO_SPEED_SHS)
	134	card->cccr.high_speed = 1;
	135	}
	136
	137	out:
	138	return ret;
	139	}
	140
4ff6471c PO	141	static int sdio_enable_wide(struct mmc_card *card)
	142	{
	143	int ret;
	144	u8 ctrl;
	145
	146	if (!(card->host->caps & MMC_CAP_4_BIT_DATA))
	147	return 0;
	148
	149	if (card->cccr.low_speed && !card->cccr.wide_bus)
	150	return 0;
	151
	152	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl);
	153	if (ret)
	154	return ret;
	155
	156	ctrl \|= SDIO_BUS_WIDTH_4BIT;
	157
	158	ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL);
	159	if (ret)
	160	return ret;
	161
	162	mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
	163
	164	return 0;
	165	}
	166
d16f5770 PO	167	/*
	168	* Test if the card supports high-speed mode and, if so, switch to it.
	169	*/
	170	static int sdio_enable_hs(struct mmc_card *card)
	171	{
	172	int ret;
	173	u8 speed;
	174
	175	if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED))
	176	return 0;
	177
	178	if (!card->cccr.high_speed)
	179	return 0;
	180
	181	ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed);
	182	if (ret)
	183	return ret;
	184
	185	speed \|= SDIO_SPEED_EHS;
	186
	187	ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_SPEED, speed, NULL);
	188	if (ret)
	189	return ret;
	190
	191	mmc_card_set_highspeed(card);
	192	mmc_set_timing(card->host, MMC_TIMING_SD_HS);
	193
	194	return 0;
	195	}
	196
5c4e6f13 PO	197	/*
	198	* Host is being removed. Free up the current card.
	199	*/
	200	static void mmc_sdio_remove(struct mmc_host *host)
	201	{
e29a7d73 PO	202	int i;
e29a7d73 PO	203
5c4e6f13 PO	204	BUG_ON(!host);
	205	BUG_ON(!host->card);
	206
e29a7d73 PO	207	for (i = 0;i < host->card->sdio_funcs;i++) {
	208	if (host->card->sdio_func[i]) {
	209	sdio_remove_func(host->card->sdio_func[i]);
	210	host->card->sdio_func[i] = NULL;
	211	}
	212	}
	213
5c4e6f13 PO	214	mmc_remove_card(host->card);
	215	host->card = NULL;
	216	}
	217
	218	/*
	219	* Card detection callback from host.
	220	*/
	221	static void mmc_sdio_detect(struct mmc_host *host)
	222	{
	223	int err;
	224
	225	BUG_ON(!host);
	226	BUG_ON(!host->card);
	227
	228	mmc_claim_host(host);
	229
	230	/*
	231	* Just check if our card has been removed.
	232	*/
	233	err = mmc_select_card(host->card);
	234
	235	mmc_release_host(host);
	236
	237	if (err) {
	238	mmc_sdio_remove(host);
	239
	240	mmc_claim_host(host);
	241	mmc_detach_bus(host);
	242	mmc_release_host(host);
	243	}
	244	}
	245
	246
	247	static const struct mmc_bus_ops mmc_sdio_ops = {
	248	.remove = mmc_sdio_remove,
	249	.detect = mmc_sdio_detect,
	250	};
	251
	252
	253	/*
	254	* Starting point for SDIO card init.
	255	*/
	256	int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
	257	{
	258	int err;
e29a7d73	259	int i, funcs;
5c4e6f13 PO	260	struct mmc_card *card;
	261
	262	BUG_ON(!host);
d84075c8	263	WARN_ON(!host->claimed);
5c4e6f13 PO	264
	265	mmc_attach_bus(host, &mmc_sdio_ops);
	266
	267	/*
	268	* Sanity check the voltages that the card claims to
	269	* support.
	270	*/
	271	if (ocr & 0x7F) {
	272	printk(KERN_WARNING "%s: card claims to support voltages "
	273	"below the defined range. These will be ignored.\n",
	274	mmc_hostname(host));
	275	ocr &= ~0x7F;
	276	}
	277
5c4e6f13 PO	278	host->ocr = mmc_select_voltage(host, ocr);
	279
	280	/*
	281	* Can we support the voltage(s) of the card(s)?
	282	*/
	283	if (!host->ocr) {
	284	err = -EINVAL;
	285	goto err;
	286	}
	287
	288	/*
	289	* Inform the card of the voltage
	290	*/
	291	err = mmc_send_io_op_cond(host, host->ocr, &ocr);
	292	if (err)
	293	goto err;
	294
af517150 DB	295	/*
	296	* For SPI, enable CRC as appropriate.
	297	*/
	298	if (mmc_host_is_spi(host)) {
	299	err = mmc_spi_set_crc(host, use_spi_crc);
	300	if (err)
	301	goto err;
	302	}
	303
5c4e6f13 PO	304	/*
	305	* The number of functions on the card is encoded inside
	306	* the ocr.
	307	*/
	308	funcs = (ocr & 0x70000000) >> 28;
	309
	310	/*
	311	* Allocate card structure.
	312	*/
51ec92e2	313	card = mmc_alloc_card(host, NULL);
5c4e6f13 PO	314	if (IS_ERR(card)) {
	315	err = PTR_ERR(card);
	316	goto err;
	317	}
	318
	319	card->type = MMC_TYPE_SDIO;
e29a7d73 PO	320	card->sdio_funcs = funcs;
	321
	322	host->card = card;
5c4e6f13 PO	323
5c4e6f13 PO	324	/*
af517150	325	* For native busses: set card RCA and quit open drain mode.
5c4e6f13	326	*/
af517150 DB	327	if (!mmc_host_is_spi(host)) {
	328	err = mmc_send_relative_addr(host, &card->rca);
	329	if (err)
	330	goto remove;
5c4e6f13	331
af517150 DB	332	mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
af517150 DB	333	}
5c4e6f13 PO	334
	335	/*
	336	* Select card, as all following commands rely on that.
	337	*/
af517150 DB	338	if (!mmc_host_is_spi(host)) {
	339	err = mmc_select_card(card);
	340	if (err)
	341	goto remove;
	342	}
5c4e6f13	343
35c66c19 PO	344	/*
	345	* Read the common registers.
	346	*/
	347	err = sdio_read_cccr(card);
	348	if (err)
	349	goto remove;
	350
1a632f8c PO	351	/*
	352	* Read the common CIS tuples.
	353	*/
	354	err = sdio_read_common_cis(card);
	355	if (err)
	356	goto remove;
	357
6db5020e	358	/*
d16f5770	359	* Switch to high-speed (if supported).
6db5020e	360	*/
d16f5770 PO	361	err = sdio_enable_hs(card);
	362	if (err)
	363	goto remove;
	364
	365	/*
	366	* Change to the card's maximum speed.
	367	*/
	368	if (mmc_card_highspeed(card)) {
	369	/*
	370	* The SDIO specification doesn't mention how
	371	* the CIS transfer speed register relates to
	372	* high-speed, but it seems that 50 MHz is
	373	* mandatory.
	374	*/
	375	mmc_set_clock(host, 50000000);
	376	} else {
	377	mmc_set_clock(host, card->cis.max_dtr);
	378	}
6db5020e	379
4ff6471c PO	380	/*
	381	* Switch to wider bus (if supported).
	382	*/
	383	err = sdio_enable_wide(card);
	384	if (err)
	385	goto remove;
	386
e29a7d73 PO	387	/*
	388	* Initialize (but don't add) all present functions.
	389	*/
	390	for (i = 0;i < funcs;i++) {
	391	err = sdio_init_func(host->card, i + 1);
	392	if (err)
	393	goto remove;
	394	}
5c4e6f13 PO	395
	396	mmc_release_host(host);
	397
e29a7d73 PO	398	/*
	399	* First add the card to the driver model...
	400	*/
5c4e6f13 PO	401	err = mmc_add_card(host->card);
5c4e6f13 PO	402	if (err)
e29a7d73 PO	403	goto remove_added;
	404
	405	/*
	406	* ...then the SDIO functions.
	407	*/
	408	for (i = 0;i < funcs;i++) {
	409	err = sdio_add_func(host->card->sdio_func[i]);
	410	if (err)
	411	goto remove_added;
	412	}
5c4e6f13 PO	413
	414	return 0;
	415
e29a7d73 PO	416
	417	remove_added:
	418	/* Remove without lock if the device has been added. */
	419	mmc_sdio_remove(host);
5c4e6f13	420	mmc_claim_host(host);
e29a7d73 PO	421	remove:
	422	/* And with lock if it hasn't been added. */
	423	if (host->card)
	424	mmc_sdio_remove(host);
5c4e6f13 PO	425	err:
	426	mmc_detach_bus(host);
	427	mmc_release_host(host);
	428
	429	printk(KERN_ERR "%s: error %d whilst initialising SDIO card\n",
	430	mmc_hostname(host), err);
	431
	432	return err;
	433	}
	434