diff options
| author | Corey Minyard <cminyard@mvista.com> | 2007-10-18 12:07:11 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-18 23:37:32 +0200 |
| commit | ac0191517c3b5f2cf68ab36756d64ef035c4a770 (patch) | |
| tree | 0c403b55053faf9c4add07658069430cbc527210 /drivers/char/ipmi/ipmi_msghandler.c | |
| parent | IPMI: new NMI handling (diff) | |
| download | linux-ac0191517c3b5f2cf68ab36756d64ef035c4a770.tar.xz linux-ac0191517c3b5f2cf68ab36756d64ef035c4a770.zip | |
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/ipmi/ipmi_msghandler.c')
| -rw-r--r-- | drivers/char/ipmi/ipmi_msghandler.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index 46d14ac16212..5dc1265ce1d5 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); |