[PATCH 3/5] gtp: Adjust 12 checks for null pointers

[SF Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Wed, 25 Jan 2017 22:50:23 +0100
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The script "checkpatch.pl" pointed information out like the following.

Comparison to NULL could be written !…

Thus fix the affected source code places.

Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
 drivers/net/gtp.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index f0c123101aa9..7e38786361d8 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -785,12 +785,12 @@ static int gtp_hashtable_new(struct gtp_dev *gtp, int 
hsize)
 
        gtp->addr_hash = kmalloc_array(hsize, sizeof(*gtp->addr_hash),
                                       GFP_KERNEL);
-       if (gtp->addr_hash == NULL)
+       if (!gtp->addr_hash)
                return -ENOMEM;
 
        gtp->tid_hash = kmalloc_array(hsize, sizeof(*gtp->tid_hash),
                                      GFP_KERNEL);
-       if (gtp->tid_hash == NULL)
+       if (!gtp->tid_hash)
                goto err1;
 
        gtp->hash_size = hsize;
@@ -832,7 +832,7 @@ static int gtp_encap_enable(struct net_device *dev, struct 
gtp_dev *gtp,
        netdev_dbg(dev, "enable gtp on %d, %d\n", fd_gtp0, fd_gtp1);
 
        sock0 = sockfd_lookup(fd_gtp0, &err);
-       if (sock0 == NULL) {
+       if (!sock0) {
                netdev_dbg(dev, "socket fd=%d not found (gtp0)\n", fd_gtp0);
                return -ENOENT;
        }
@@ -844,7 +844,7 @@ static int gtp_encap_enable(struct net_device *dev, struct 
gtp_dev *gtp,
        }
 
        sock1u = sockfd_lookup(fd_gtp1, &err);
-       if (sock1u == NULL) {
+       if (!sock1u) {
                netdev_dbg(dev, "socket fd=%d not found (gtp1u)\n", fd_gtp1);
                err = -ENOENT;
                goto err1;
@@ -957,7 +957,7 @@ static int ipv4_pdp_add(struct net_device *dev, struct 
genl_info *info)
        }
 
        pctx = kmalloc(sizeof(*pctx), GFP_KERNEL);
-       if (pctx == NULL)
+       if (!pctx)
                return -ENOMEM;
 
        ipv4_pdp_fill(pctx, info);
@@ -1029,7 +1029,7 @@ static int gtp_genl_new_pdp(struct sk_buff *skb, struct 
genl_info *info)
 
        /* Check if there's an existing gtpX device to configure */
        dev = gtp_find_dev(net, nla_get_u32(info->attrs[GTPA_LINK]));
-       if (dev == NULL) {
+       if (!dev) {
                put_net(net);
                return -ENODEV;
        }
@@ -1055,7 +1055,7 @@ static int gtp_genl_del_pdp(struct sk_buff *skb, struct 
genl_info *info)
 
        /* Check if there's an existing gtpX device to configure */
        dev = gtp_find_dev(net, nla_get_u32(info->attrs[GTPA_LINK]));
-       if (dev == NULL) {
+       if (!dev) {
                put_net(net);
                return -ENODEV;
        }
@@ -1079,7 +1079,7 @@ static int gtp_genl_del_pdp(struct sk_buff *skb, struct 
genl_info *info)
                return -EINVAL;
        }
 
-       if (pctx == NULL)
+       if (!pctx)
                return -ENOENT;
 
        if (pctx->gtp_version == GTP_V0)
@@ -1105,7 +1105,7 @@ static int gtp_genl_fill_info(struct sk_buff *skb, u32 
snd_portid, u32 snd_seq,
 
        genlh = genlmsg_put(skb, snd_portid, snd_seq, &gtp_genl_family, 0,
                            type);
-       if (genlh == NULL)
+       if (!genlh)
                goto nlmsg_failure;
 
        if (nla_put_u32(skb, GTPA_VERSION, pctx->gtp_version) ||
@@ -1163,7 +1163,7 @@ static int gtp_genl_get_pdp(struct sk_buff *skb, struct 
genl_info *info)
 
        /* Check if there's an existing gtpX device to configure */
        dev = gtp_find_dev(net, nla_get_u32(info->attrs[GTPA_LINK]));
-       if (dev == NULL) {
+       if (!dev) {
                put_net(net);
                return -ENODEV;
        }
@@ -1188,13 +1188,13 @@ static int gtp_genl_get_pdp(struct sk_buff *skb, struct 
genl_info *info)
                pctx = ipv4_pdp_find(gtp, ip);
        }
 
-       if (pctx == NULL) {
+       if (!pctx) {
                err = -ENOENT;
                goto err_unlock;
        }
 
        skb2 = genlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
-       if (skb2 == NULL) {
+       if (!skb2) {
                err = -ENOMEM;
                goto err_unlock;
        }
-- 
2.11.0