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ipmi/powernv: Fix minor locking bug 

If ipmi_powernv_recv(...) is called without a current message it
prints a warning and returns. However it fails to release the message
lock causing the system to dead lock during any subsequent IPMI
operations.

This error path should never normally be taken unless there are bugs
elsewhere in the system.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
This commit is contained in:
Alistair Popple 2015-04-10 17:32:20 +10:00 committed by Corey Minyard
parent 1e7d6a45f6
commit ad1ed2a9dd
1 changed files with 1 additions and 0 deletions
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1
drivers/char/ipmi/ipmi_powernv.c
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@ -125,6 +125,7 @@ static int ipmi_powernv_recv(struct ipmi_smi_powernv *smi)
spin_lock_irqsave(&smi->msg_lock, flags);
if (!smi->cur_msg) {
spin_unlock_irqrestore(&smi->msg_lock, flags);
pr_warn("no current message?\n");
return 0;
}