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authorKrzysztof Mazur <krzysiek@podlesie.net>2012-11-06 23:16:57 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-11-28 00:36:48 +0000
commitec809bd817dfa1905283468e4c813684ed4efe78 (patch)
tree6e13787ae7a88c73316e91f02b8116cc93309752 /include/linux/atmdev.h
parentae088d663beebb3cad0e7abaac67ee61a7c578d5 (diff)
atm: add owner of push() callback to atmvcc
The atm is using atmvcc->push(vcc, NULL) callback to notify protocol that vcc will be closed and protocol must detach from it. This callback is usually used by protocol to decrement module usage count by module_put(), but it leaves small window then module is still used after module_put(). Now the owner of push() callback is kept in atmvcc and module_put(atmvcc->owner) is called after the protocol is detached from vcc. Signed-off-by: Krzysztof Mazur <krzysiek@podlesie.net> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Chas Williams <chas@cmf.nrl.navy.mil>
Diffstat (limited to 'include/linux/atmdev.h')
-rw-r--r--include/linux/atmdev.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h
index 22ef21c33d0c..72db2af902a8 100644
--- a/include/linux/atmdev.h
+++ b/include/linux/atmdev.h
@@ -106,6 +106,7 @@ struct atm_vcc {
void *dev_data; /* per-device data */
void *proto_data; /* per-protocol data */
struct k_atm_aal_stats *stats; /* pointer to AAL stats group */
+ struct module *owner; /* owner of ->push function */
/* SVC part --- may move later ------------------------------------- */
short itf; /* interface number */
struct sockaddr_atmsvc local;