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[SCSI] qla4xxx: Do not send mbox command if FW is in failed state 

FW is not able to process mbox command if FW state is failed. This will cause
mbox command to timeout and adapter reset. We have separate function to detect
FW failed state and do adapter reset. So to avoid mbox command timeout, do not
process mbox command in case of FW state failed.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Prasanna Mumbai <prasanna.mumbai@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Prasanna Mumbai 2011-03-21 03:34:25 -07:00 committed by James Bottomley
parent 9640de2099
commit 99b53bf50c
1 changed files with 18 additions and 6 deletions
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24
drivers/scsi/qla4xxx/ql4_mbx.c
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@ -32,6 +32,7 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
u_long wait_count;
uint32_t intr_status;
unsigned long flags = 0;
uint32_t dev_state;
/* Make sure that pointers are valid */
if (!mbx_cmd || !mbx_sts) {
@ -40,12 +41,23 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
return status;
}
if (is_qla8022(ha) &&
test_bit(AF_FW_RECOVERY, &ha->flags)) {
DEBUG2(ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: prematurely "
"completing mbx cmd as firmware recovery detected\n",
ha->host_no, __func__));
return status;
if (is_qla8022(ha)) {
if (test_bit(AF_FW_RECOVERY, &ha->flags)) {
DEBUG2(ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: "
"prematurely completing mbx cmd as firmware "
"recovery detected\n", ha->host_no, __func__));
return status;
}
/* Do not send any mbx cmd if h/w is in failed state*/
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_WARNING, ha, "scsi%ld: %s: H/W is in "
"failed state, do not send any mailbox commands\n",
ha->host_no, __func__);
return status;
}
}
if ((is_aer_supported(ha)) &&