linux-kernel - [PATCH] SCSI-lpfc: Delete unnecessary checks before the function call "mempool

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Message-ID: <564AE8EB.4050509@users.sourceforge.net>
Date:	Tue, 17 Nov 2015 09:44:27 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Dick Kennedy <dick.kennedy@...gotech.com>,
	"James E. J. Bottomley" <JBottomley@...n.com>,
	James Smart <james.smart@...gotech.com>,
	linux-scsi@...r.kernel.org
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] SCSI-lpfc: Delete unnecessary checks before the function call
 "mempool_destroy"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 17 Nov 2015 09:34:27 +0100

The mempool_destroy() function tests whether its argument is NULL
and then returns immediately. Thus the test around the calls is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/scsi/lpfc/lpfc_mem.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c
index 3fa6533..4fb3581 100644
--- a/drivers/scsi/lpfc/lpfc_mem.c
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -231,15 +231,13 @@ lpfc_mem_free(struct lpfc_hba *phba)
 	if (phba->lpfc_hbq_pool)
 		pci_pool_destroy(phba->lpfc_hbq_pool);
 	phba->lpfc_hbq_pool = NULL;
-
-	if (phba->rrq_pool)
-		mempool_destroy(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 && phba->active_rrq_pool) {
+	if (phba->sli_rev == LPFC_SLI_REV4) {
 		mempool_destroy(phba->active_rrq_pool);
 		phba->active_rrq_pool = NULL;
 	}
-- 
2.6.2

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