GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-03-21 06:24:12 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

net-sysfs: Use rtnl_trylock in wireless sysfs methods.

Browse source 
The wireless sysfs methods like the rest of the networking sysfs
methods are removed with the rtnl_lock held and block until
the existing methods stop executing.  So use rtnl_trylock
and restart_syscall so that the code continues to work.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman 2010-02-19 13:23:47 +00:00 • committed by David S. Miller
parent 88af182e38
commit b8afe64161
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
net/core/net-sysfs.c
View file

@ -410,7 +410,8 @@ static ssize_t wireless_show(struct device *d, char *buf,
const struct iw_statistics *iw; const struct iw_statistics *iw;
ssize_t ret = -EINVAL; ssize_t ret = -EINVAL;
rtnl_lock(); if (!rtnl_trylock())
return restart_syscall();
if (dev_isalive(dev)) { if (dev_isalive(dev)) {
iw = get_wireless_stats(dev); iw = get_wireless_stats(dev);
if (iw) if (iw)