Patch "Revert "lpfc: Delete unnecessary checks before the function call mempool_destroy"" has been added to the 4.5-stable tree

Patch "Revert "lpfc: Delete unnecessary checks before the function call mempool_destroy"" has been added to the 4.5-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    Revert "lpfc: Delete unnecessary checks before the function call mempool_destroy"

to the 4.5-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     revert-lpfc-delete-unnecessary-checks-before-the-function-call-mempool_destroy.patch
and it can be found in the queue-4.5 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From d65c8fff867a6450c58ce31572e883148a445ddf Mon Sep 17 00:00:00 2001
From: "Martin K. Petersen" <martin.petersen@oracle.com>
Date: Mon, 9 May 2016 21:39:43 -0400
Subject: Revert "lpfc: Delete unnecessary checks before the function call mempool_destroy"

From: Martin K. Petersen <martin.petersen@oracle.com>

commit d65c8fff867a6450c58ce31572e883148a445ddf upstream.

This reverts commit 9be321819c43417432a8376428b90fe3fe3a3510 which
caused a regression on hardware using the SLI3 interface.

Reported-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <jejb@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/scsi/lpfc/lpfc_mem.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/scsi/lpfc/lpfc_mem.c
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -231,13 +231,15 @@ lpfc_mem_free(struct lpfc_hba *phba)
 	if (phba->lpfc_hbq_pool)
 		pci_pool_destroy(phba->lpfc_hbq_pool);
 	phba->lpfc_hbq_pool = NULL;
-	mempool_destroy(phba->rrq_pool);
+
+	if (phba->rrq_pool)
+		mempool_destroy(phba->rrq_pool);
 	phba->rrq_pool = NULL;
 
 	/* Free NLP memory pool */
 	mempool_destroy(phba->nlp_mem_pool);
 	phba->nlp_mem_pool = NULL;
-	if (phba->sli_rev == LPFC_SLI_REV4) {
+	if (phba->sli_rev == LPFC_SLI_REV4 && phba->active_rrq_pool) {
 		mempool_destroy(phba->active_rrq_pool);
 		phba->active_rrq_pool = NULL;
 	}


Patches currently in stable-queue which might be from martin.petersen@oracle.com are

queue-4.5/aacraid-fix-for-kdump-driver-hang.patch
queue-4.5/revert-lpfc-delete-unnecessary-checks-before-the-function-call-mempool_destroy.patch
queue-4.5/aacraid-fix-for-aac_command_thread-hang.patch
queue-4.5/aacraid-relinquish-cpu-during-timeout-wait.patch