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[SCSI] qla4xxx: Don't recover adapter if device state is FAILED 

Multiple reset request don't get handled correctly as
the driver tries to recover adapter which is in FAILED state.

Signed-off-by: Sarang Radke <sarang.radke@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Sarang Radke 2011-12-01 22:42:09 -08:00 committed by James Bottomley
parent 8a28896019
commit 8e0f3a66a2
1 changed files with 21 additions and 0 deletions
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21
drivers/scsi/qla4xxx/ql4_os.c
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@ -2414,6 +2414,7 @@ static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
{
int status = QLA_ERROR;
uint8_t reset_chip = 0;
uint32_t dev_state;
/* Stall incoming I/O until we are done */
scsi_block_requests(ha->host);
@ -2501,6 +2502,25 @@ recover_ha_init_adapter:
* Since we don't want to block the DPC for too long
* with multiple resets in the same thread,
* utilize DPC to retry */
if (is_qla8022(ha)) {
qla4_8xxx_idc_lock(ha);
dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
qla4_8xxx_idc_unlock(ha);
if (dev_state == QLA82XX_DEV_FAILED) {
ql4_printk(KERN_INFO, ha, "%s: don't retry "
"recover adapter. H/W is in Failed "
"state\n", __func__);
qla4xxx_dead_adapter_cleanup(ha);
clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
clear_bit(DPC_RESET_HA, &ha->dpc_flags);
clear_bit(DPC_RESET_HA_FW_CONTEXT,
&ha->dpc_flags);
status = QLA_ERROR;
goto exit_recover;
}
}
if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
DEBUG2(printk("scsi%ld: recover adapter - retrying "
@ -2539,6 +2559,7 @@ recover_ha_init_adapter:
clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
}
exit_recover:
ha->adapter_error_count++;
if (test_bit(AF_ONLINE, &ha->flags))