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authorJayamohan Kallickal <jayamohan.kallickal@emulex.com>2011-10-07 19:31:08 -0500
committerJames Bottomley <JBottomley@Parallels.com>2011-10-16 11:01:06 -0500
commite528586079a20c3d28a490ec8e3271bb4348fc3e (patch)
tree7ee278d0f6578e9d6c0e954d539513b77bdea960 /drivers/scsi/be2iscsi
parent528c04ee6dcdb4591aab94a003e77e41cd7d2d23 (diff)
downloadop-kernel-dev-e528586079a20c3d28a490ec8e3271bb4348fc3e.zip
op-kernel-dev-e528586079a20c3d28a490ec8e3271bb4348fc3e.tar.gz
[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')
-rw-r--r--drivers/scsi/be2iscsi/be_cmds.c19
-rw-r--r--drivers/scsi/be2iscsi/be_cmds.h2
-rw-r--r--drivers/scsi/be2iscsi/be_main.c2
3 files changed, 22 insertions, 1 deletions
diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c
index b8a82f2..67fd831 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;
+}
diff --git a/drivers/scsi/be2iscsi/be_cmds.h b/drivers/scsi/be2iscsi/be_cmds.h
index 497eb29..8b40a5b4 100644
--- a/drivers/scsi/be2iscsi/be_cmds.h
+++ b/drivers/scsi/be2iscsi/be_cmds.h
@@ -561,6 +561,8 @@ int be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info *ctrl,
struct be_dma_mem *q_mem, u32 page_offset,
u32 num_pages);
+int beiscsi_cmd_reset_function(struct beiscsi_hba *phba);
+
int be_cmd_wrbq_create(struct be_ctrl_info *ctrl, struct be_dma_mem *q_mem,
struct be_queue_info *wrbq);
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index 57fea38..804c46e 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -4276,7 +4276,7 @@ static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev,
gcrashmode++;
shost_printk(KERN_ERR, phba->shost,
"Loading Driver in crashdump mode\n");
- ret = beiscsi_pci_soft_reset(phba);
+ ret = beiscsi_cmd_reset_function(phba);
if (ret) {
shost_printk(KERN_ERR, phba->shost,
"Reset Failed. Aborting Crashdump\n");
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