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| author | Jeff Moyer <jmoyer@redhat.com> | 2005-08-11 19:23:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-08-11 19:23:50 -0700 |
| commit | a636e1357911afdea7c8344ee65f78d36caf3c16 (patch) | |
| tree | 644495567b6a66d29116e0831a96198d82d788e9 | |
| parent | 11513128bb66b0b09d5d0df069b58afdb01752a2 (diff) | |
| download | linux-stable-a636e1357911afdea7c8344ee65f78d36caf3c16.tar.gz linux-stable-a636e1357911afdea7c8344ee65f78d36caf3c16.tar.bz2 linux-stable-a636e1357911afdea7c8344ee65f78d36caf3c16.zip | |
[NETPOLL]: deadlock bugfix
This fixes an obvious deadlock in the netpoll code. netpoll_rx takes the
npinfo->rx_lock. netpoll_rx is also the only caller of arp_reply (through
__netpoll_rx). As such, it is not necessary to take this lock.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/netpoll.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c index 895f3efc65aa..b9d9da082af2 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -353,11 +353,8 @@ static void arp_reply(struct sk_buff *skb) struct sk_buff *send_skb; struct netpoll *np = NULL; - spin_lock_irqsave(&npinfo->rx_lock, flags); if (npinfo->rx_np && npinfo->rx_np->dev == skb->dev) np = npinfo->rx_np; - spin_unlock_irqrestore(&npinfo->rx_lock, flags); - if (!np) return; |