linux-kernel - [PATCH 4.5 048/128] Revert "lpfc: Delete unnecessary checks before the function call mempool

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Date:	Sun,  5 Jun 2016 15:23:23 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Dick Kennedy <dick.kennedy@...adcom.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	James Bottomley <jejb@...ux.vnet.ibm.com>
Subject: [PATCH 4.5 048/128] Revert "lpfc: Delete unnecessary checks before the function call mempool_destroy"

4.5-stable review patch.  If anyone has any objections, please let me know.

------------------

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

commit d65c8fff867a6450c58ce31572e883148a445ddf upstream.

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

Reported-by: Dick Kennedy <dick.kennedy@...adcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: James Bottomley <jejb@...ux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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;
 	}