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net: hsr: fix NULL checks in the code

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This patch replaces all instance of NULL checks such as
    if (foo == NULL) with if (!foo)
Also
    if (foo != NULL) with if (foo)

This is seen when ran checkpatch.pl -f on files under net/hsr
and suggestion is to replace as above.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Murali Karicheri 2019-04-05 13:31:28 -04:00 committed by David S. Miller
parent 0525fc069f
commit 05ca6e644d
5 changed files with 13 additions and 13 deletions
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2
net/hsr/hsr_device.c
View File

@ -258,7 +258,7 @@ static void send_hsr_supervision_frame(struct hsr_port *master,
sizeof(struct hsr_sup_tag) +
sizeof(struct hsr_sup_payload) + hlen + tlen);
if (skb == NULL)
if (!skb)
return;
skb_reserve(skb, hlen);

12
net/hsr/hsr_forward.c
View File

@ -97,7 +97,7 @@ static struct sk_buff *create_stripped_skb(struct sk_buff *skb_in,
skb_pull(skb_in, HSR_HLEN);
skb = __pskb_copy(skb_in, skb_headroom(skb_in) - HSR_HLEN, GFP_ATOMIC);
skb_push(skb_in, HSR_HLEN);
if (skb == NULL)
if (!skb)
return NULL;
skb_reset_mac_header(skb);
@ -160,7 +160,7 @@ static struct sk_buff *create_tagged_skb(struct sk_buff *skb_o,
/* Create the new skb with enough headroom to fit the HSR tag */
skb = __pskb_copy(skb_o, skb_headroom(skb_o) + HSR_HLEN, GFP_ATOMIC);
if (skb == NULL)
if (!skb)
return NULL;
skb_reset_mac_header(skb);
@ -277,7 +277,7 @@ static void hsr_forward_do(struct hsr_frame_info *frame)
skb = frame_get_tagged_skb(frame, port);
else
skb = frame_get_stripped_skb(frame, port);
if (skb == NULL) {
if (!skb) {
/* FIXME: Record the dropped frame? */
continue;
}
@ -317,7 +317,7 @@ static int hsr_fill_frame_info(struct hsr_frame_info *frame,
frame->is_supervision = is_supervision_frame(port->hsr, skb);
frame->node_src = hsr_get_node(port, skb, frame->is_supervision);
if (frame->node_src == NULL)
if (!frame->node_src)
return -1; /* Unknown node and !is_supervision, or no mem */
ethhdr = (struct ethhdr *) skb_mac_header(skb);
@ -364,9 +364,9 @@ void hsr_forward_skb(struct sk_buff *skb, struct hsr_port *port)
hsr_register_frame_in(frame.node_src, port, frame.sequence_nr);
hsr_forward_do(&frame);
if (frame.skb_hsr != NULL)
if (frame.skb_hsr)
kfree_skb(frame.skb_hsr);
if (frame.skb_std != NULL)
if (frame.skb_std)
kfree_skb(frame.skb_std);
return;

2
net/hsr/hsr_framereg.c
View File

@ -405,7 +405,7 @@ void hsr_prune_nodes(struct timer_list *t)
msecs_to_jiffies(1.5*MAX_SLAVE_DIFF))) {
rcu_read_lock();
port = get_late_port(hsr, node);
if (port != NULL)
if (port)
hsr_nl_ringerror(hsr, node->MacAddressA, port);
rcu_read_unlock();
}

4
net/hsr/hsr_main.c
View File

@ -30,12 +30,12 @@ static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event,
dev = netdev_notifier_info_to_dev(ptr);
port = hsr_port_get_rtnl(dev);
if (port == NULL) {
if (!port) {
if (!is_hsr_master(dev))
return NOTIFY_DONE; /* Not an HSR device */
hsr = netdev_priv(dev);
port = hsr_port_get_hsr(hsr, HSR_PT_MASTER);
if (port == NULL) {
if (!port) {
/* Resend of notification concerning removed device? */
return NOTIFY_DONE;
}

6
net/hsr/hsr_slave.c
View File

@ -140,11 +140,11 @@ int hsr_add_port(struct hsr_priv *hsr, struct net_device *dev,
}
port = hsr_port_get_hsr(hsr, type);
if (port != NULL)
if (port)
return -EBUSY; /* This port already exists */
port = kzalloc(sizeof(*port), GFP_KERNEL);
if (port == NULL)
if (!port)
return -ENOMEM;
if (type != HSR_PT_MASTER) {
@ -181,7 +181,7 @@ void hsr_del_port(struct hsr_port *port)
list_del_rcu(&port->port_list);
if (port != master) {
if (master != NULL) {
if (master) {
netdev_update_features(master->dev);
dev_set_mtu(master->dev, hsr_get_max_mtu(hsr));
}