diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/ipmi/ipmi_kcs_sm.c | 8 | ||||
| -rw-r--r-- | drivers/char/ipmi/ipmi_si_intf.c | 3 | ||||
| -rw-r--r-- | drivers/char/ipmi/ipmi_si_sm.h | 1 |
3 files changed, 11 insertions, 1 deletions
diff --git a/drivers/char/ipmi/ipmi_kcs_sm.c b/drivers/char/ipmi/ipmi_kcs_sm.c index dc83365ede4..da1554194d3 100644 --- a/drivers/char/ipmi/ipmi_kcs_sm.c +++ b/drivers/char/ipmi/ipmi_kcs_sm.c @@ -41,6 +41,7 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/string.h> +#include <linux/jiffies.h> #include <linux/ipmi_msgdefs.h> /* for completion codes */ #include "ipmi_si_sm.h" @@ -99,6 +100,7 @@ enum kcs_states { #define IBF_RETRY_TIMEOUT 1000000 #define OBF_RETRY_TIMEOUT 1000000 #define MAX_ERROR_RETRIES 10 +#define ERROR0_OBF_WAIT_JIFFIES (2*HZ) struct si_sm_data { @@ -115,6 +117,7 @@ struct si_sm_data unsigned int error_retries; long ibf_timeout; long obf_timeout; + unsigned long error0_timeout; }; static unsigned int init_kcs_data(struct si_sm_data *kcs, @@ -187,6 +190,7 @@ static inline void start_error_recovery(struct si_sm_data *kcs, char *reason) printk(KERN_DEBUG "ipmi_kcs_sm: kcs hosed: %s\n", reason); kcs->state = KCS_HOSED; } else { + kcs->error0_timeout = jiffies + ERROR0_OBF_WAIT_JIFFIES; kcs->state = KCS_ERROR0; } } @@ -423,6 +427,10 @@ static enum si_sm_result kcs_event(struct si_sm_data *kcs, long time) case KCS_ERROR0: clear_obf(kcs, status); + status = read_status(kcs); + if (GET_STATUS_OBF(status)) /* controller isn't responding */ + if (time_before(jiffies, kcs->error0_timeout)) + return SI_SM_CALL_WITH_TICK_DELAY; write_cmd(kcs, KCS_GET_STATUS_ABORT); kcs->state = KCS_ERROR1; break; diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index 2ace62b1d32..d514df7c728 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -1932,7 +1932,8 @@ static int try_get_dev_id(struct smi_info *smi_info) smi_result = smi_info->handlers->event(smi_info->si_sm, 0); for (;;) { - if (smi_result == SI_SM_CALL_WITH_DELAY) { + if (smi_result == SI_SM_CALL_WITH_DELAY || + smi_result == SI_SM_CALL_WITH_TICK_DELAY) { schedule_timeout_uninterruptible(1); smi_result = smi_info->handlers->event( smi_info->si_sm, 100); diff --git a/drivers/char/ipmi/ipmi_si_sm.h b/drivers/char/ipmi/ipmi_si_sm.h index 62791dd4298..bf3d4962d6a 100644 --- a/drivers/char/ipmi/ipmi_si_sm.h +++ b/drivers/char/ipmi/ipmi_si_sm.h @@ -62,6 +62,7 @@ enum si_sm_result { SI_SM_CALL_WITHOUT_DELAY, /* Call the driver again immediately */ SI_SM_CALL_WITH_DELAY, /* Delay some before calling again. */ + SI_SM_CALL_WITH_TICK_DELAY, /* Delay at least 1 tick before calling again. */ SI_SM_TRANSACTION_COMPLETE, /* A transaction is finished. */ SI_SM_IDLE, /* The SM is in idle state. */ SI_SM_HOSED, /* The hardware violated the state machine. */ |