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| author | Jing Huang <huangj@brocade.com> | 2011-04-13 11:45:53 -0700 |
|---|---|---|
| committer | James Bottomley <jbottomley@parallels.com> | 2011-05-24 12:38:02 -0400 |
| commit | 45d7f0cc58183062adea0a1de3d8cba768134138 (patch) | |
| tree | 1977a1b1a1452a53f5e6504674168235f32ce23a /drivers/scsi/bfa/bfa_ioc.c | |
| parent | a5442ba4a428081ebac7090f46c62ffaa17ca951 (diff) | |
| download | blackbird-op-linux-45d7f0cc58183062adea0a1de3d8cba768134138.tar.gz blackbird-op-linux-45d7f0cc58183062adea0a1de3d8cba768134138.zip | |
[SCSI] bfa: kdump fix
Root cause: When kernel crashes, bfa IOC state machine and FW doesn't get
a notification and hence are not cleanly shutdown. So registers holding
driver/IOC state information are not reset back to valid disabled/parking
values. This causes subsequent driver initialization to hang during kdump
kernel boot.
Fix description: during the initialization of first PCI function, reset
corresponding register when unclean shutown is detect by reading chip
registers. This will make sure that ioc/fw gets clean re-initialization.
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Diffstat (limited to 'drivers/scsi/bfa/bfa_ioc.c')
| -rw-r--r-- | drivers/scsi/bfa/bfa_ioc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/scsi/bfa/bfa_ioc.c b/drivers/scsi/bfa/bfa_ioc.c index c1f72c49196f..6c7e0339dda4 100644 --- a/drivers/scsi/bfa/bfa_ioc.c +++ b/drivers/scsi/bfa/bfa_ioc.c @@ -56,6 +56,8 @@ BFA_TRC_FILE(CNA, IOC); #define bfa_ioc_map_port(__ioc) ((__ioc)->ioc_hwif->ioc_map_port(__ioc)) #define bfa_ioc_notify_fail(__ioc) \ ((__ioc)->ioc_hwif->ioc_notify_fail(__ioc)) +#define bfa_ioc_sync_start(__ioc) \ + ((__ioc)->ioc_hwif->ioc_sync_start(__ioc)) #define bfa_ioc_sync_join(__ioc) \ ((__ioc)->ioc_hwif->ioc_sync_join(__ioc)) #define bfa_ioc_sync_leave(__ioc) \ @@ -647,7 +649,7 @@ bfa_iocpf_sm_fwcheck(struct bfa_iocpf_s *iocpf, enum iocpf_event event) switch (event) { case IOCPF_E_SEMLOCKED: if (bfa_ioc_firmware_lock(ioc)) { - if (bfa_ioc_sync_complete(ioc)) { + if (bfa_ioc_sync_start(ioc)) { iocpf->retry_count = 0; bfa_ioc_sync_join(ioc); bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit); |
