From f7bc6434e20589596efbc1fc2bde6d0d78d6168c Mon Sep 17 00:00:00 2001
From: James Smart <james.smart@emulex.com>
Date: Thu, 10 Oct 2013 12:19:53 -0400
Subject: [PATCH] [SCSI] lpfc 8.3.43: Fix crash after xri limit is reached.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---
drivers/scsi/lpfc/lpfc_scsi.c | 19 ++++++++++++-------
drivers/scsi/lpfc/lpfc_sli4.h | 1 +
2 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index c913e8cc3b269..443bbca9694cb 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -1012,20 +1012,25 @@ lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc)
break;
}
- /* Allocate iotag for psb->cur_iocbq. */
- iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
- if (iotag == 0) {
+
+ lxri = lpfc_sli4_next_xritag(phba);
+ if (lxri == NO_XRI) {
pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
- psb->data, psb->dma_handle);
+ psb->data, psb->dma_handle);
kfree(psb);
break;
}
- lxri = lpfc_sli4_next_xritag(phba);
- if (lxri == NO_XRI) {
+ /* Allocate iotag for psb->cur_iocbq. */
+ iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
+ if (iotag == 0) {
pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
- psb->data, psb->dma_handle);
+ psb->data, psb->dma_handle);
kfree(psb);
+ lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
+ "3368 Failed to allocated IOTAG for"
+ " XRI:0x%x\n", lxri);
+ lpfc_sli4_free_xri(phba, lxri);
break;
}
psb->cur_iocbq.sli4_lxritag = lxri;
diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h
index 85120b77aa0e9..298c8cd1a89d9 100644
--- a/drivers/scsi/lpfc/lpfc_sli4.h
+++ b/drivers/scsi/lpfc/lpfc_sli4.h
@@ -673,6 +673,7 @@ void lpfc_sli4_queue_unset(struct lpfc_hba *);
int lpfc_sli4_post_sgl(struct lpfc_hba *, dma_addr_t, dma_addr_t, uint16_t);
int lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *);
uint16_t lpfc_sli4_next_xritag(struct lpfc_hba *);
+void lpfc_sli4_free_xri(struct lpfc_hba *, int);
int lpfc_sli4_post_async_mbox(struct lpfc_hba *);
int lpfc_sli4_post_scsi_sgl_block(struct lpfc_hba *, struct list_head *, int);
struct lpfc_cq_event *__lpfc_sli4_cq_event_alloc(struct lpfc_hba *);
--
2.30.2