diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/char/ipmi/ipmi_si_intf.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index 3667033fcc51..6eda61664aaa 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -924,9 +924,14 @@ static int sender(void *send_info, struct ipmi_smi_msg *msg) { struct smi_info *smi_info = send_info; unsigned long flags; + int rv = IPMI_CC_NO_ERROR; debug_timestamp(smi_info, "Enqueue"); + /* + * Check here for run to completion mode. A check under lock is + * later. + */ if (smi_info->si_state == SI_HOSED) return IPMI_BUS_ERR; @@ -940,18 +945,15 @@ static int sender(void *send_info, struct ipmi_smi_msg *msg) } spin_lock_irqsave(&smi_info->si_lock, flags); - /* - * The following two lines don't need to be under the lock for - * the lock's sake, but they do need SMP memory barriers to - * avoid getting things out of order. We are already claiming - * the lock, anyway, so just do it under the lock to avoid the - * ordering problem. - */ - BUG_ON(smi_info->waiting_msg); - smi_info->waiting_msg = msg; - check_start_timer_thread(smi_info); + if (smi_info->si_state == SI_HOSED) { + rv = IPMI_BUS_ERR; + } else { + BUG_ON(smi_info->waiting_msg); + smi_info->waiting_msg = msg; + check_start_timer_thread(smi_info); + } spin_unlock_irqrestore(&smi_info->si_lock, flags); - return IPMI_CC_NO_ERROR; + return rv; } static void set_run_to_completion(void *send_info, bool i_run_to_completion) |