diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2023-10-13 02:17:46 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-13 03:07:34 +0300 |
| commit | 0e6bb5b7f4c8e6665e76bdafce37ad4a8daf83c5 (patch) | |
| tree | 6f71fc5628f01bcf9d2dc6eceb3000ee4e73c79a /net/can | |
| parent | 2f0968a030f2a5dd4897a0151c8395bf5babe5b0 (diff) | |
| parent | e8c127b0576660da9195504fe8393fe9da3de9ce (diff) | |
| download | linux-0e6bb5b7f4c8e6665e76bdafce37ad4a8daf83c5.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
No conflicts.
Adjacent changes:
kernel/bpf/verifier.c
829955981c55 ("bpf: Fix verifier log for async callback return values")
a923819fb2c5 ("bpf: Treat first argument as return value for bpf_throw")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/can')
| -rw-r--r-- | net/can/isotp.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/net/can/isotp.c b/net/can/isotp.c index f02b5d3e4733..d1c6f206f429 100644 --- a/net/can/isotp.c +++ b/net/can/isotp.c @@ -948,21 +948,18 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size) if (!so->bound || so->tx.state == ISOTP_SHUTDOWN) return -EADDRNOTAVAIL; -wait_free_buffer: - /* we do not support multiple buffers - for now */ - if (wq_has_sleeper(&so->wait) && (msg->msg_flags & MSG_DONTWAIT)) - return -EAGAIN; + while (cmpxchg(&so->tx.state, ISOTP_IDLE, ISOTP_SENDING) != ISOTP_IDLE) { + /* we do not support multiple buffers - for now */ + if (msg->msg_flags & MSG_DONTWAIT) + return -EAGAIN; - /* wait for complete transmission of current pdu */ - err = wait_event_interruptible(so->wait, so->tx.state == ISOTP_IDLE); - if (err) - goto err_event_drop; - - if (cmpxchg(&so->tx.state, ISOTP_IDLE, ISOTP_SENDING) != ISOTP_IDLE) { if (so->tx.state == ISOTP_SHUTDOWN) return -EADDRNOTAVAIL; - goto wait_free_buffer; + /* wait for complete transmission of current pdu */ + err = wait_event_interruptible(so->wait, so->tx.state == ISOTP_IDLE); + if (err) + goto err_event_drop; } /* PDU size > default => try max_pdu_size */ |