aboutsummaryrefslogtreecommitdiff
path: root/drivers/char
diff options
context:
space:
mode:
authorCorey Minyard <cminyard@mvista.com>2007-10-18 03:07:11 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-18 14:37:32 -0700
commitac0191517c3b5f2cf68ab36756d64ef035c4a770 (patch)
tree0c403b55053faf9c4add07658069430cbc527210 /drivers/char
parent612b5a8d3a57d07698ceec0e307a84f38b241fe2 (diff)
downloadvexpress-lsk-ac0191517c3b5f2cf68ab36756d64ef035c4a770.tar.gz
IPMI: fix hotmod remove lock
The removal of proc entries was done holding a lock, which is no longer allowed. There is no need for the lock, only a mutex is required, so switch over to a mutex. Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/ipmi/ipmi_msghandler.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index 46d14ac1621..5dc1265ce1d 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -221,10 +221,8 @@ struct ipmi_smi
void *send_info;
#ifdef CONFIG_PROC_FS
- /* A list of proc entries for this interface. This does not
- need a lock, only one thread creates it and only one thread
- destroys it. */
- spinlock_t proc_entry_lock;
+ /* A list of proc entries for this interface. */
+ struct mutex proc_entry_lock;
struct ipmi_proc_entry *proc_entries;
#endif
@@ -1891,11 +1889,11 @@ int ipmi_smi_add_proc_entry(ipmi_smi_t smi, char *name,
file->write_proc = write_proc;
file->owner = owner;
- spin_lock(&smi->proc_entry_lock);
+ mutex_lock(&smi->proc_entry_lock);
/* Stick it on the list. */
entry->next = smi->proc_entries;
smi->proc_entries = entry;
- spin_unlock(&smi->proc_entry_lock);
+ mutex_unlock(&smi->proc_entry_lock);
}
#endif /* CONFIG_PROC_FS */
@@ -1939,7 +1937,7 @@ static void remove_proc_entries(ipmi_smi_t smi)
#ifdef CONFIG_PROC_FS
struct ipmi_proc_entry *entry;
- spin_lock(&smi->proc_entry_lock);
+ mutex_lock(&smi->proc_entry_lock);
while (smi->proc_entries) {
entry = smi->proc_entries;
smi->proc_entries = entry->next;
@@ -1948,7 +1946,7 @@ static void remove_proc_entries(ipmi_smi_t smi)
kfree(entry->name);
kfree(entry);
}
- spin_unlock(&smi->proc_entry_lock);
+ mutex_unlock(&smi->proc_entry_lock);
remove_proc_entry(smi->proc_dir_name, proc_ipmi_root);
#endif /* CONFIG_PROC_FS */
}
@@ -2679,7 +2677,7 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
}
intf->curr_seq = 0;
#ifdef CONFIG_PROC_FS
- spin_lock_init(&intf->proc_entry_lock);
+ mutex_init(&intf->proc_entry_lock);
#endif
spin_lock_init(&intf->waiting_msgs_lock);
INIT_LIST_HEAD(&intf->waiting_msgs);