It looks like there is an unbalance with the mutexes after the latest
IPMI patchset applied. For example in
"static __devinit int init_ipmi_si(void)"
....
list_for_each_entry(e, &smi_infos, link) {
if (!e->irq && (!type || e->addr_source == type)) {
if (!try_smi_init(e)) {
type = e->addr_source;
}
}
}
mutex_unlock(&smi_infos_lock);
we are calling mutex_unlock twice, because the mutex_unlock(&smi_infos_lock)
is also called from try_smi_init.
If the lock in try_smi_init is not needed this can be then solved
by removing the mutex_unlock(&smi_infos_lock) from try_smi_init.
Signed-off-by: Tomas Henzl <[email protected]>
---
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 8d7b879..c6af8e0 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -3060,8 +3060,6 @@ static int try_smi_init(struct smi_info *new_smi)
goto out_err_stop_timer;
}
- mutex_unlock(&smi_infos_lock);
-
printk(KERN_INFO "IPMI %s interface initialized\n",
si_to_str[new_smi->si_type]);
@@ -3111,8 +3109,6 @@ static int try_smi_init(struct smi_info *new_smi)
new_smi->dev_registered = 0;
}
- mutex_unlock(&smi_infos_lock);
-
return rv;
}
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