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| author | Oliver Hartkopp <socketcan@hartkopp.net> | 2022-04-04 18:30:22 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-04-06 13:45:26 +0100 |
| commit | f4b41f062c424209e3939a81e6da022e049a45f2 (patch) | |
| tree | cd8e8a16fb7cc256ad2a0f4136b169bce3d40e47 /net/nfc/rawsock.c | |
| parent | 0b5c21bbc01e92745ca1ca4f6fd87d878fa3ea5e (diff) | |
| download | lwn-f4b41f062c424209e3939a81e6da022e049a45f2.tar.gz lwn-f4b41f062c424209e3939a81e6da022e049a45f2.zip | |
net: remove noblock parameter from skb_recv_datagram()
skb_recv_datagram() has two parameters 'flags' and 'noblock' that are
merged inside skb_recv_datagram() by 'flags | (noblock ? MSG_DONTWAIT : 0)'
As 'flags' may contain MSG_DONTWAIT as value most callers split the 'flags'
into 'flags' and 'noblock' with finally obsolete bit operations like this:
skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &rc);
And this is not even done consistently with the 'flags' parameter.
This patch removes the obsolete and costly splitting into two parameters
and only performs bit operations when really needed on the caller side.
One missing conversion thankfully reported by kernel test robot. I missed
to enable kunit tests to build the mctp code.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/nfc/rawsock.c')
| -rw-r--r-- | net/nfc/rawsock.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c index 0ca214ab5aef..8dd569765f96 100644 --- a/net/nfc/rawsock.c +++ b/net/nfc/rawsock.c @@ -238,7 +238,6 @@ static int rawsock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) static int rawsock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, int flags) { - int noblock = flags & MSG_DONTWAIT; struct sock *sk = sock->sk; struct sk_buff *skb; int copied; @@ -246,7 +245,7 @@ static int rawsock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, pr_debug("sock=%p sk=%p len=%zu flags=%d\n", sock, sk, len, flags); - skb = skb_recv_datagram(sk, flags, noblock, &rc); + skb = skb_recv_datagram(sk, flags, &rc); if (!skb) return rc; |