diff options
| author | Jayamohan Kallickal <jayamohan.kallickal@emulex.com> | 2011-10-07 19:31:08 -0500 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-10-16 11:01:06 -0500 |
| commit | e528586079a20c3d28a490ec8e3271bb4348fc3e (patch) | |
| tree | 7ee278d0f6578e9d6c0e954d539513b77bdea960 /drivers/scsi/be2iscsi/be_cmds.c | |
| parent | 528c04ee6dcdb4591aab94a003e77e41cd7d2d23 (diff) | |
[SCSI] be2iscsi: Fix for kdump failure
This patch fixes the Kdump failure reported by Redhat wich was caused by
be2iscsi resetting the Chip when be2iscsi detects it is in crashdump mode. If
be2net was loaded before be2iscsi then this leaves be2net driver hanging on to
resources that the chip stopped recognising after the reset.
This patch replaces chip reset with Function reset so that only the
particular function and not the whole chip is affected
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/be2iscsi/be_cmds.c')
| -rw-r--r-- | drivers/scsi/be2iscsi/be_cmds.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c index b8a82f2c62c..67fd831e79c 100644 --- a/drivers/scsi/be2iscsi/be_cmds.c +++ b/drivers/scsi/be2iscsi/be_cmds.c @@ -868,3 +868,22 @@ error: beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL); return status; } + +int beiscsi_cmd_reset_function(struct beiscsi_hba *phba) +{ + struct be_ctrl_info *ctrl = &phba->ctrl; + struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem); + struct be_post_sgl_pages_req *req = embedded_payload(wrb); + int status; + + spin_lock(&ctrl->mbox_lock); + + req = embedded_payload(wrb); + be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0); + be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON, + OPCODE_COMMON_FUNCTION_RESET, sizeof(*req)); + status = be_mbox_notify_wait(phba); + + spin_unlock(&ctrl->mbox_lock); + return status; +} |