[SCSI] qla4xxx: Fix failure of IDC Time Extend mailbox command

Issue:
Mailbox command 0x102 (IDC Time Extend) failure seen while applying
changes to iface using iscsiadm

Fix:
Added fix to extend IDC timeout only for ISP84xx when IDC ACK
needs to be posted and disable ACB mailbox command completion
is in intermediate state.

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>

diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index f0dc6b321c8d508326cdcd40723663440e4df461..6905bad3e15cda76d6df52521b0e1d135847a646 100644 (file)
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -1922,6 +1922,7 @@ int qla4xxx_disable_acb(struct scsi_qla_host *ha)
                                  mbox_sts[0], mbox_sts[1], mbox_sts[2]));
        } else {
                if (is_qla8042(ha) &&
+                   test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) &&
                    (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE)) {
                        /*
                         * Disable ACB mailbox command takes time to complete