From 0b81c6c620215743204cc03df40b25662a97a263 Mon Sep 17 00:00:00 2001 From: Julian Wiedmann Date: Thu, 14 Nov 2019 11:19:24 +0100 Subject: s390/qeth: don't check drvdata in sysfs code Given the way how the sysfs attributes are registered / unregistered, the show/store helpers will never be called with a NULL drvdata. Signed-off-by: Julian Wiedmann Signed-off-by: David S. Miller --- drivers/s390/net/qeth_core_sys.c | 80 ++-------------------------------- drivers/s390/net/qeth_l2_sys.c | 29 ------------- drivers/s390/net/qeth_l3_sys.c | 94 ---------------------------------------- 3 files changed, 4 insertions(+), 199 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/net/qeth_core_sys.c b/drivers/s390/net/qeth_core_sys.c index 9f392497d570..e81170ab6d9a 100644 --- a/drivers/s390/net/qeth_core_sys.c +++ b/drivers/s390/net/qeth_core_sys.c @@ -20,8 +20,6 @@ static ssize_t qeth_dev_state_show(struct device *dev, struct device_attribute *attr, char *buf) { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; switch (card->state) { case CARD_STATE_DOWN: @@ -45,8 +43,6 @@ static ssize_t qeth_dev_chpid_show(struct device *dev, struct device_attribute *attr, char *buf) { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; return sprintf(buf, "%02X\n", card->info.chpid); } @@ -57,8 +53,7 @@ static ssize_t qeth_dev_if_name_show(struct device *dev, struct device_attribute *attr, char *buf) { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; + return sprintf(buf, "%s\n", QETH_CARD_IFNAME(card)); } @@ -68,8 +63,6 @@ static ssize_t qeth_dev_card_type_show(struct device *dev, struct device_attribute *attr, char *buf) { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; return sprintf(buf, "%s\n", qeth_get_cardname_short(card)); } @@ -94,8 +87,6 @@ static ssize_t qeth_dev_inbuf_size_show(struct device *dev, struct device_attribute *attr, char *buf) { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; return sprintf(buf, "%s\n", qeth_get_bufsize_str(card)); } @@ -106,8 +97,6 @@ static ssize_t qeth_dev_portno_show(struct device *dev, struct device_attribute *attr, char *buf) { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; return sprintf(buf, "%i\n", card->dev->dev_port); } @@ -120,9 +109,6 @@ static ssize_t qeth_dev_portno_store(struct device *dev, unsigned int portno, limit; int rc = 0; - if (!card) - return -EINVAL; - mutex_lock(&card->conf_mutex); if (card->state != CARD_STATE_DOWN) { rc = -EPERM; @@ -171,9 +157,6 @@ static ssize_t qeth_dev_prioqing_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - switch (card->qdio.do_prio_queueing) { case QETH_PRIO_Q_ING_PREC: return sprintf(buf, "%s\n", "by precedence"); @@ -195,9 +178,6 @@ static ssize_t qeth_dev_prioqing_store(struct device *dev, struct qeth_card *card = dev_get_drvdata(dev); int rc = 0; - if (!card) - return -EINVAL; - if (IS_IQD(card)) return -EOPNOTSUPP; @@ -262,9 +242,6 @@ static ssize_t qeth_dev_bufcnt_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return sprintf(buf, "%i\n", card->qdio.in_buf_pool.buf_count); } @@ -276,9 +253,6 @@ static ssize_t qeth_dev_bufcnt_store(struct device *dev, int cnt, old_cnt; int rc = 0; - if (!card) - return -EINVAL; - mutex_lock(&card->conf_mutex); if (card->state != CARD_STATE_DOWN) { rc = -EPERM; @@ -307,9 +281,6 @@ static ssize_t qeth_dev_recover_store(struct device *dev, char *tmp; int i; - if (!card) - return -EINVAL; - if (!qeth_card_hw_is_reachable(card)) return -EPERM; @@ -325,11 +296,6 @@ static DEVICE_ATTR(recover, 0200, NULL, qeth_dev_recover_store); static ssize_t qeth_dev_performance_stats_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct qeth_card *card = dev_get_drvdata(dev); - - if (!card) - return -EINVAL; - return sprintf(buf, "1\n"); } @@ -342,9 +308,6 @@ static ssize_t qeth_dev_performance_stats_store(struct device *dev, bool reset; int rc; - if (!card) - return -EINVAL; - rc = kstrtobool(buf, &reset); if (rc) return rc; @@ -370,9 +333,6 @@ static ssize_t qeth_dev_layer2_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return sprintf(buf, "%i\n", card->options.layer); } @@ -385,9 +345,6 @@ static ssize_t qeth_dev_layer2_store(struct device *dev, int i, rc = 0; enum qeth_discipline_id newdis; - if (!card) - return -EINVAL; - mutex_lock(&card->discipline_mutex); if (card->state != CARD_STATE_DOWN) { rc = -EPERM; @@ -453,9 +410,6 @@ static ssize_t qeth_dev_isolation_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - switch (card->options.isolation) { case ISOLATION_MODE_NONE: return snprintf(buf, 6, "%s\n", ATTR_QETH_ISOLATION_NONE); @@ -475,9 +429,6 @@ static ssize_t qeth_dev_isolation_store(struct device *dev, enum qeth_ipa_isolation_modes isolation; int rc = 0; - if (!card) - return -EINVAL; - mutex_lock(&card->conf_mutex); if (!IS_OSD(card) && !IS_OSX(card)) { rc = -EOPNOTSUPP; @@ -522,9 +473,6 @@ static ssize_t qeth_dev_switch_attrs_show(struct device *dev, struct qeth_switch_info sw_info; int rc = 0; - if (!card) - return -EINVAL; - if (!qeth_card_hw_is_reachable(card)) return sprintf(buf, "n/a\n"); @@ -555,8 +503,6 @@ static ssize_t qeth_hw_trap_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; if (card->info.hwtrap) return snprintf(buf, 5, "arm\n"); else @@ -570,9 +516,6 @@ static ssize_t qeth_hw_trap_store(struct device *dev, int rc = 0; int state = 0; - if (!card) - return -EINVAL; - mutex_lock(&card->conf_mutex); if (qeth_card_hw_is_reachable(card)) state = 1; @@ -607,24 +550,12 @@ static ssize_t qeth_hw_trap_store(struct device *dev, static DEVICE_ATTR(hw_trap, 0644, qeth_hw_trap_show, qeth_hw_trap_store); -static ssize_t qeth_dev_blkt_show(char *buf, struct qeth_card *card, int value) -{ - - if (!card) - return -EINVAL; - - return sprintf(buf, "%i\n", value); -} - 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, rc = 0; - if (!card) - return -EINVAL; - mutex_lock(&card->conf_mutex); if (card->state != CARD_STATE_DOWN) { rc = -EPERM; @@ -645,7 +576,7 @@ static ssize_t qeth_dev_blkt_total_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - return qeth_dev_blkt_show(buf, card, card->info.blkt.time_total); + return sprintf(buf, "%i\n", card->info.blkt.time_total); } static ssize_t qeth_dev_blkt_total_store(struct device *dev, @@ -657,8 +588,6 @@ static ssize_t qeth_dev_blkt_total_store(struct device *dev, &card->info.blkt.time_total, 5000); } - - static DEVICE_ATTR(total, 0644, qeth_dev_blkt_total_show, qeth_dev_blkt_total_store); @@ -667,7 +596,7 @@ static ssize_t qeth_dev_blkt_inter_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - return qeth_dev_blkt_show(buf, card, card->info.blkt.inter_packet); + return sprintf(buf, "%i\n", card->info.blkt.inter_packet); } static ssize_t qeth_dev_blkt_inter_store(struct device *dev, @@ -687,8 +616,7 @@ static ssize_t qeth_dev_blkt_inter_jumbo_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - return qeth_dev_blkt_show(buf, card, - card->info.blkt.inter_packet_jumbo); + return sprintf(buf, "%i\n", card->info.blkt.inter_packet_jumbo); } static ssize_t qeth_dev_blkt_inter_jumbo_store(struct device *dev, diff --git a/drivers/s390/net/qeth_l2_sys.c b/drivers/s390/net/qeth_l2_sys.c index f2c3b127b1e4..d9af5fe040be 100644 --- a/drivers/s390/net/qeth_l2_sys.c +++ b/drivers/s390/net/qeth_l2_sys.c @@ -18,9 +18,6 @@ static ssize_t qeth_bridge_port_role_state_show(struct device *dev, int rc = 0; char *word; - if (!card) - return -EINVAL; - if (qeth_l2_vnicc_is_in_use(card)) return sprintf(buf, "n/a (VNIC characteristics)\n"); @@ -79,8 +76,6 @@ static ssize_t qeth_bridge_port_role_store(struct device *dev, int rc = 0; enum qeth_sbp_roles role; - if (!card) - return -EINVAL; if (sysfs_streq(buf, "primary")) role = QETH_SBP_ROLE_PRIMARY; else if (sysfs_streq(buf, "secondary")) @@ -132,9 +127,6 @@ static ssize_t qeth_bridgeport_hostnotification_show(struct device *dev, struct qeth_card *card = dev_get_drvdata(dev); int enabled; - if (!card) - return -EINVAL; - if (qeth_l2_vnicc_is_in_use(card)) return sprintf(buf, "n/a (VNIC characteristics)\n"); @@ -150,9 +142,6 @@ static ssize_t qeth_bridgeport_hostnotification_store(struct device *dev, bool enable; int rc; - if (!card) - return -EINVAL; - rc = kstrtobool(buf, &enable); if (rc) return rc; @@ -183,9 +172,6 @@ static ssize_t qeth_bridgeport_reflect_show(struct device *dev, struct qeth_card *card = dev_get_drvdata(dev); char *state; - if (!card) - return -EINVAL; - if (qeth_l2_vnicc_is_in_use(card)) return sprintf(buf, "n/a (VNIC characteristics)\n"); @@ -207,9 +193,6 @@ static ssize_t qeth_bridgeport_reflect_store(struct device *dev, int enable, primary; int rc = 0; - if (!card) - return -EINVAL; - if (sysfs_streq(buf, "none")) { enable = 0; primary = 0; @@ -315,9 +298,6 @@ static ssize_t qeth_vnicc_timeout_show(struct device *dev, u32 timeout; int rc; - if (!card) - return -EINVAL; - rc = qeth_l2_vnicc_get_timeout(card, &timeout); if (rc == -EBUSY) return sprintf(buf, "n/a (BridgePort)\n"); @@ -335,9 +315,6 @@ static ssize_t qeth_vnicc_timeout_store(struct device *dev, u32 timeout; int rc; - if (!card) - return -EINVAL; - rc = kstrtou32(buf, 10, &timeout); if (rc) return rc; @@ -357,9 +334,6 @@ static ssize_t qeth_vnicc_char_show(struct device *dev, u32 vnicc; int rc; - if (!card) - return -EINVAL; - vnicc = qeth_l2_vnicc_sysfs_attr_to_char(attr->attr.name); rc = qeth_l2_vnicc_get_state(card, vnicc, &state); @@ -380,9 +354,6 @@ static ssize_t qeth_vnicc_char_store(struct device *dev, u32 vnicc; int rc; - if (!card) - return -EINVAL; - if (kstrtobool(buf, &state)) return -EINVAL; diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c index 2f73b33c9347..b6b38b69a5f4 100644 --- a/drivers/s390/net/qeth_l3_sys.c +++ b/drivers/s390/net/qeth_l3_sys.c @@ -60,9 +60,6 @@ static ssize_t qeth_l3_dev_route4_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_route_show(card, &card->options.route4, buf); } @@ -109,9 +106,6 @@ static ssize_t qeth_l3_dev_route4_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_route_store(card, &card->options.route4, QETH_PROT_IPV4, buf, count); } @@ -124,9 +118,6 @@ static ssize_t qeth_l3_dev_route6_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_route_show(card, &card->options.route6, buf); } @@ -135,9 +126,6 @@ static ssize_t qeth_l3_dev_route6_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_route_store(card, &card->options.route6, QETH_PROT_IPV6, buf, count); } @@ -150,9 +138,6 @@ static ssize_t qeth_l3_dev_fake_broadcast_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return sprintf(buf, "%i\n", card->options.fake_broadcast? 1:0); } @@ -163,9 +148,6 @@ static ssize_t qeth_l3_dev_fake_broadcast_store(struct device *dev, char *tmp; int i, rc = 0; - if (!card) - return -EINVAL; - mutex_lock(&card->conf_mutex); if (card->state != CARD_STATE_DOWN) { rc = -EPERM; @@ -190,9 +172,6 @@ static ssize_t qeth_l3_dev_sniffer_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return sprintf(buf, "%i\n", card->options.sniffer ? 1 : 0); } @@ -203,9 +182,6 @@ static ssize_t qeth_l3_dev_sniffer_store(struct device *dev, int rc = 0; unsigned long i; - if (!card) - return -EINVAL; - if (!IS_IQD(card)) return -EPERM; if (card->options.cq == QETH_CQ_ENABLED) @@ -248,16 +224,12 @@ out: static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show, qeth_l3_dev_sniffer_store); - static ssize_t qeth_l3_dev_hsuid_show(struct device *dev, struct device_attribute *attr, char *buf) { struct qeth_card *card = dev_get_drvdata(dev); char tmp_hsuid[9]; - if (!card) - return -EINVAL; - if (!IS_IQD(card)) return -EPERM; @@ -273,9 +245,6 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev, char *tmp; int rc; - if (!card) - return -EINVAL; - if (!IS_IQD(card)) return -EPERM; if (card->state != CARD_STATE_DOWN) @@ -336,9 +305,6 @@ static ssize_t qeth_l3_dev_ipato_enable_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return sprintf(buf, "%i\n", card->ipato.enabled? 1:0); } @@ -349,9 +315,6 @@ static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev, bool enable; int rc = 0; - if (!card) - return -EINVAL; - mutex_lock(&card->conf_mutex); if (card->state != CARD_STATE_DOWN) { rc = -EPERM; @@ -385,9 +348,6 @@ static ssize_t qeth_l3_dev_ipato_invert4_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return sprintf(buf, "%i\n", card->ipato.invert4? 1:0); } @@ -399,9 +359,6 @@ static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev, bool invert; int rc = 0; - if (!card) - return -EINVAL; - mutex_lock(&card->conf_mutex); if (sysfs_streq(buf, "toggle")) { invert = !card->ipato.invert4; @@ -460,9 +417,6 @@ static ssize_t qeth_l3_dev_ipato_add4_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV4); } @@ -528,9 +482,6 @@ static ssize_t qeth_l3_dev_ipato_add4_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV4); } @@ -558,9 +509,6 @@ static ssize_t qeth_l3_dev_ipato_del4_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV4); } @@ -572,9 +520,6 @@ static ssize_t qeth_l3_dev_ipato_invert6_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return sprintf(buf, "%i\n", card->ipato.invert6? 1:0); } @@ -585,9 +530,6 @@ static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev, bool invert; int rc = 0; - if (!card) - return -EINVAL; - mutex_lock(&card->conf_mutex); if (sysfs_streq(buf, "toggle")) { invert = !card->ipato.invert6; @@ -617,9 +559,6 @@ static ssize_t qeth_l3_dev_ipato_add6_show(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV6); } @@ -628,9 +567,6 @@ static ssize_t qeth_l3_dev_ipato_add6_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV6); } @@ -643,9 +579,6 @@ static ssize_t qeth_l3_dev_ipato_del6_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV6); } @@ -679,9 +612,6 @@ static ssize_t qeth_l3_dev_ip_add_show(struct device *dev, char *buf, int entry_len; /* length of 1 entry string, differs between v4 and v6 */ int i; - if (!card) - return -EINVAL; - entry_len = (proto == QETH_PROT_IPV4)? 12 : 40; entry_len += 2; /* \n + terminator */ mutex_lock(&card->ip_lock); @@ -741,9 +671,6 @@ static ssize_t qeth_l3_dev_vipa_add4_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV4); } @@ -771,9 +698,6 @@ static ssize_t qeth_l3_dev_vipa_del4_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV4); } @@ -793,9 +717,6 @@ static ssize_t qeth_l3_dev_vipa_add6_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV6); } @@ -808,9 +729,6 @@ static ssize_t qeth_l3_dev_vipa_del6_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV6); } @@ -884,9 +802,6 @@ static ssize_t qeth_l3_dev_rxip_add4_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV4); } @@ -914,9 +829,6 @@ static ssize_t qeth_l3_dev_rxip_del4_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV4); } @@ -936,9 +848,6 @@ static ssize_t qeth_l3_dev_rxip_add6_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV6); } @@ -951,9 +860,6 @@ static ssize_t qeth_l3_dev_rxip_del6_store(struct device *dev, { struct qeth_card *card = dev_get_drvdata(dev); - if (!card) - return -EINVAL; - return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV6); } -- cgit v1.2.3