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authorVikas Chaudhary <vikas.chaudhary@qlogic.com>2010-04-28 11:38:11 +0530
committerJames Bottomley <James.Bottomley@suse.de>2010-05-02 15:39:20 -0400
commit065aa1b4db63c7fa68a3e889510c4e63404a1ac7 (patch)
tree11a19a7faf1ef71d0a8f45f385b87c8235155f64 /drivers/scsi/qla4xxx/ql4_isr.c
parent2a49a78ed3c8d7c8319595270110c69f99c61a74 (diff)
downloadblackbird-op-linux-065aa1b4db63c7fa68a3e889510c4e63404a1ac7.tar.gz
blackbird-op-linux-065aa1b4db63c7fa68a3e889510c4e63404a1ac7.zip
[SCSI] qla4xxx: set device state as per Link UP and LINK DOWN
Link Down -> Mark all devices missing Previously, the driver took no action on a Link Down, and waited for the I/O on a dead connection to timeout in the firmware before marking the DDB missing. Link Up -> Mark all devices online F/W will do auto login to all the devices only once. After that its the responsibility of the driver to relogin to devices whenever there is : * Any sort of connection failure or * KATO expires indicating target has logged out or * I/O times out etc. Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by: Karen Higgins <karen.higgins@qlogic.com> Signed-off-by: Ravi Anand <ravi.anand@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_isr.c')
-rw-r--r--drivers/scsi/qla4xxx/ql4_isr.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_isr.c b/drivers/scsi/qla4xxx/ql4_isr.c
index c196d55eae39..9db286df7ca0 100644
--- a/drivers/scsi/qla4xxx/ql4_isr.c
+++ b/drivers/scsi/qla4xxx/ql4_isr.c
@@ -498,15 +498,22 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
break;
case MBOX_ASTS_LINK_UP:
- DEBUG2(printk("scsi%ld: AEN %04x Adapter LINK UP\n",
- ha->host_no, mbox_status));
set_bit(AF_LINK_UP, &ha->flags);
+ if (test_bit(AF_INIT_DONE, &ha->flags))
+ set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
+
+ DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x Adapter"
+ " LINK UP\n", ha->host_no,
+ mbox_status));
break;
case MBOX_ASTS_LINK_DOWN:
- DEBUG2(printk("scsi%ld: AEN %04x Adapter LINK DOWN\n",
- ha->host_no, mbox_status));
clear_bit(AF_LINK_UP, &ha->flags);
+ set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
+
+ DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x Adapter"
+ " LINK DOWN\n", ha->host_no,
+ mbox_status));
break;
case MBOX_ASTS_HEARTBEAT:
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