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[SCSI] qla4xxx: Fix double reset in case of firmware hung for ISP83XX 

In case of firmware hung we need to call "mailbox_premature_completion" to
complete any pending mbox command as firmware is not alive.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Vikas Chaudhary 2013-03-07 05:43:10 -05:00 committed by James Bottomley
parent ebd777dec7
commit 6cf9412124
1 changed files with 16 additions and 2 deletions
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18
drivers/scsi/qla4xxx/ql4_os.c
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@ -2543,6 +2543,7 @@ static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
{
uint32_t dev_state;
uint32_t idc_ctrl;
/* don't poll if reset is going on */
if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
@ -2561,10 +2562,23 @@ void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
qla4xxx_wake_dpc(ha);
} else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
__func__);
if (is_qla8032(ha)) {
idc_ctrl = qla4_83xx_rd_reg(ha,
QLA83XX_IDC_DRV_CTRL);
if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
__func__);
qla4xxx_mailbox_premature_completion(
ha);
}
}
if (is_qla8032(ha) ||
(is_qla8022(ha) && !ql4xdontresethba)) {
ql4_printk(KERN_INFO, ha, "%s: HW State: "
"NEED RESET!\n", __func__);
set_bit(DPC_RESET_HA, &ha->dpc_flags);
qla4xxx_wake_dpc(ha);
}