Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ac0191517c3b5f2cf68ab36756d64ef035c4a770
Commit:     ac0191517c3b5f2cf68ab36756d64ef035c4a770
Parent:     612b5a8d3a57d07698ceec0e307a84f38b241fe2
Author:     Corey Minyard <[EMAIL PROTECTED]>
AuthorDate: Thu Oct 18 03:07:11 2007 -0700
Committer:  Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu Oct 18 14:37:32 2007 -0700

    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 <[EMAIL PROTECTED]>
    Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
    Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
 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 46d14ac..5dc1265 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);
-
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