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path: root/drivers/s390/net/qeth_core_sys.c
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Diffstat (limited to 'drivers/s390/net/qeth_core_sys.c')
-rw-r--r--drivers/s390/net/qeth_core_sys.c151
1 files changed, 93 insertions, 58 deletions
diff --git a/drivers/s390/net/qeth_core_sys.c b/drivers/s390/net/qeth_core_sys.c
index 25dfd5abd19b..2eb022ff2610 100644
--- a/drivers/s390/net/qeth_core_sys.c
+++ b/drivers/s390/net/qeth_core_sys.c
@@ -122,23 +122,32 @@ static ssize_t qeth_dev_portno_store(struct device *dev,
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
unsigned int portno, limit;
+ int rc = 0;
if (!card)
return -EINVAL;
+ mutex_lock(&card->conf_mutex);
if ((card->state != CARD_STATE_DOWN) &&
- (card->state != CARD_STATE_RECOVER))
- return -EPERM;
+ (card->state != CARD_STATE_RECOVER)) {
+ rc = -EPERM;
+ goto out;
+ }
portno = simple_strtoul(buf, &tmp, 16);
- if (portno > QETH_MAX_PORTNO)
- return -EINVAL;
+ if (portno > QETH_MAX_PORTNO) {
+ rc = -EINVAL;
+ goto out;
+ }
limit = (card->ssqd.pcnt ? card->ssqd.pcnt - 1 : card->ssqd.pcnt);
- if (portno > limit)
- return -EINVAL;
-
+ if (portno > limit) {
+ rc = -EINVAL;
+ goto out;
+ }
card->info.portno = portno;
- return count;
+out:
+ mutex_unlock(&card->conf_mutex);
+ return rc ? rc : count;
}
static DEVICE_ATTR(portno, 0644, qeth_dev_portno_show, qeth_dev_portno_store);
@@ -165,18 +174,23 @@ static ssize_t qeth_dev_portname_store(struct device *dev,
{
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
- int i;
+ int i, rc = 0;
if (!card)
return -EINVAL;
+ mutex_lock(&card->conf_mutex);
if ((card->state != CARD_STATE_DOWN) &&
- (card->state != CARD_STATE_RECOVER))
- return -EPERM;
+ (card->state != CARD_STATE_RECOVER)) {
+ rc = -EPERM;
+ goto out;
+ }
tmp = strsep((char **) &buf, "\n");
- if ((strlen(tmp) > 8) || (strlen(tmp) == 0))
- return -EINVAL;
+ if ((strlen(tmp) > 8) || (strlen(tmp) == 0)) {
+ rc = -EINVAL;
+ goto out;
+ }
card->info.portname[0] = strlen(tmp);
/* for beauty reasons */
@@ -184,8 +198,9 @@ static ssize_t qeth_dev_portname_store(struct device *dev,
card->info.portname[i] = ' ';
strcpy(card->info.portname + 1, tmp);
ASCEBC(card->info.portname + 1, 8);
-
- return count;
+out:
+ mutex_unlock(&card->conf_mutex);
+ return rc ? rc : count;
}
static DEVICE_ATTR(portname, 0644, qeth_dev_portname_show,
@@ -215,20 +230,25 @@ static ssize_t qeth_dev_prioqing_store(struct device *dev,
{
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
+ int rc = 0;
if (!card)
return -EINVAL;
+ mutex_lock(&card->conf_mutex);
if ((card->state != CARD_STATE_DOWN) &&
- (card->state != CARD_STATE_RECOVER))
- return -EPERM;
+ (card->state != CARD_STATE_RECOVER)) {
+ rc = -EPERM;
+ goto out;
+ }
/* check if 1920 devices are supported ,
* if though we have to permit priority queueing
*/
if (card->qdio.no_out_queues == 1) {
card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
- return -EPERM;
+ rc = -EPERM;
+ goto out;
}
tmp = strsep((char **) &buf, "\n");
@@ -251,10 +271,11 @@ static ssize_t qeth_dev_prioqing_store(struct device *dev,
} else if (!strcmp(tmp, "no_prio_queueing")) {
card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING;
card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
- } else {
- return -EINVAL;
- }
- return count;
+ } else
+ rc = -EINVAL;
+out:
+ mutex_unlock(&card->conf_mutex);
+ return rc ? rc : count;
}
static DEVICE_ATTR(priority_queueing, 0644, qeth_dev_prioqing_show,
@@ -277,14 +298,17 @@ static ssize_t qeth_dev_bufcnt_store(struct device *dev,
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
int cnt, old_cnt;
- int rc;
+ int rc = 0;
if (!card)
return -EINVAL;
+ mutex_lock(&card->conf_mutex);
if ((card->state != CARD_STATE_DOWN) &&
- (card->state != CARD_STATE_RECOVER))
- return -EPERM;
+ (card->state != CARD_STATE_RECOVER)) {
+ rc = -EPERM;
+ goto out;
+ }
old_cnt = card->qdio.in_buf_pool.buf_count;
cnt = simple_strtoul(buf, &tmp, 10);
@@ -293,7 +317,9 @@ static ssize_t qeth_dev_bufcnt_store(struct device *dev,
if (old_cnt != cnt) {
rc = qeth_realloc_buffer_pool(card, cnt);
}
- return count;
+out:
+ mutex_unlock(&card->conf_mutex);
+ return rc ? rc : count;
}
static DEVICE_ATTR(buffer_count, 0644, qeth_dev_bufcnt_show,
@@ -337,25 +363,27 @@ static ssize_t qeth_dev_performance_stats_store(struct device *dev,
{
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
- int i;
+ int i, rc = 0;
if (!card)
return -EINVAL;
+ mutex_lock(&card->conf_mutex);
i = simple_strtoul(buf, &tmp, 16);
if ((i == 0) || (i == 1)) {
if (i == card->options.performance_stats)
- return count;
+ goto out;;
card->options.performance_stats = i;
if (i == 0)
memset(&card->perf_stats, 0,
sizeof(struct qeth_perf_stats));
card->perf_stats.initial_rx_packets = card->stats.rx_packets;
card->perf_stats.initial_tx_packets = card->stats.tx_packets;
- } else {
- return -EINVAL;
- }
- return count;
+ } else
+ rc = -EINVAL;
+out:
+ mutex_unlock(&card->conf_mutex);
+ return rc ? rc : count;
}
static DEVICE_ATTR(performance_stats, 0644, qeth_dev_performance_stats_show,
@@ -377,15 +405,17 @@ static ssize_t qeth_dev_layer2_store(struct device *dev,
{
struct qeth_card *card = dev_get_drvdata(dev);
char *tmp;
- int i, rc;
+ int i, rc = 0;
enum qeth_discipline_id newdis;
if (!card)
return -EINVAL;
- if (((card->state != CARD_STATE_DOWN) &&
- (card->state != CARD_STATE_RECOVER)))
- return -EPERM;
+ mutex_lock(&card->conf_mutex);
+ if (card->state != CARD_STATE_DOWN) {
+ rc = -EPERM;
+ goto out;
+ }
i = simple_strtoul(buf, &tmp, 16);
switch (i) {
@@ -396,12 +426,13 @@ static ssize_t qeth_dev_layer2_store(struct device *dev,
newdis = QETH_DISCIPLINE_LAYER2;
break;
default:
- return -EINVAL;
+ rc = -EINVAL;
+ goto out;
}
- if (card->options.layer2 == newdis) {
- return count;
- } else {
+ if (card->options.layer2 == newdis)
+ goto out;
+ else {
if (card->discipline.ccwgdriver) {
card->discipline.ccwgdriver->remove(card->gdev);
qeth_core_free_discipline(card);
@@ -410,12 +441,12 @@ static ssize_t qeth_dev_layer2_store(struct device *dev,
rc = qeth_core_load_discipline(card, newdis);
if (rc)
- return rc;
+ goto out;
rc = card->discipline.ccwgdriver->probe(card->gdev);
- if (rc)
- return rc;
- return count;
+out:
+ mutex_unlock(&card->conf_mutex);
+ return rc ? rc : count;
}
static DEVICE_ATTR(layer2, 0644, qeth_dev_layer2_show,
@@ -454,13 +485,13 @@ static ssize_t qeth_dev_isolation_store(struct device *dev,
char *tmp, *curtoken;
curtoken = (char *) buf;
- if (!card) {
- rc = -EINVAL;
- goto out;
- }
+ if (!card)
+ return -EINVAL;
+ mutex_lock(&card->conf_mutex);
/* check for unknown, too, in case we do not yet know who we are */
- if (card->info.type != QETH_CARD_TYPE_OSAE &&
+ if (card->info.type != QETH_CARD_TYPE_OSD &&
+ card->info.type != QETH_CARD_TYPE_OSX &&
card->info.type != QETH_CARD_TYPE_UNKNOWN) {
rc = -EOPNOTSUPP;
dev_err(&card->gdev->dev, "Adapter does not "
@@ -491,6 +522,7 @@ static ssize_t qeth_dev_isolation_store(struct device *dev,
rc = ipa_rc;
}
out:
+ mutex_unlock(&card->conf_mutex);
return rc;
}
@@ -510,22 +542,25 @@ static ssize_t qeth_dev_blkt_store(struct qeth_card *card,
const char *buf, size_t count, int *value, int max_value)
{
char *tmp;
- int i;
+ int i, rc = 0;
if (!card)
return -EINVAL;
+ mutex_lock(&card->conf_mutex);
if ((card->state != CARD_STATE_DOWN) &&
- (card->state != CARD_STATE_RECOVER))
- return -EPERM;
-
+ (card->state != CARD_STATE_RECOVER)) {
+ rc = -EPERM;
+ goto out;
+ }
i = simple_strtoul(buf, &tmp, 10);
- if (i <= max_value) {
+ if (i <= max_value)
*value = i;
- } else {
- return -EINVAL;
- }
- return count;
+ else
+ rc = -EINVAL;
+out:
+ mutex_unlock(&card->conf_mutex);
+ return rc ? rc : count;
}
static ssize_t qeth_dev_blkt_total_show(struct device *dev,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.