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authorStanislaw Gruszka <stf_xl@wp.pl>2005-11-29 16:16:21 -0800
committerDavid S. Miller <davem@davemloft.net>2005-11-29 16:16:21 -0800
commitaaaaaadbe7a663d110814db50fcbe7d320eb4c32 (patch)
tree316bdbd49e3a6ac7a78cad8797d148f79a343d45 /net/atm/resources.h
parent49693280262a149e5430d3401e263e464c88334a (diff)
downloadlinux-stericsson-aaaaaadbe7a663d110814db50fcbe7d320eb4c32.tar.gz
[ATM]: avoid race conditions related to atm_devs list
Use semaphore to protect atm_devs list, as no one need access to it from interrupt context. Avoid race conditions between atm_dev_register(), atm_dev_lookup() and atm_dev_deregister(). Fix double spin_unlock() bug. Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/atm/resources.h')
-rw-r--r--net/atm/resources.h3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/atm/resources.h b/net/atm/resources.h
index 12910619dbb6..b7fb82a93b42 100644
--- a/net/atm/resources.h
+++ b/net/atm/resources.h
@@ -11,8 +11,7 @@
extern struct list_head atm_devs;
-extern spinlock_t atm_dev_lock;
-
+extern struct semaphore atm_dev_mutex;
int atm_dev_ioctl(unsigned int cmd, void __user *arg);