linux-kernel - [PATCH 6/6] scsi: mpt3sas: Replace a dynamic allocation with a local variable

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Date:   Tue, 25 Jul 2023 09:13:31 -0700
From:   James Seo <james@...iv.tech>
To:     Sathya Prakash <sathya.prakash@...adcom.com>,
        Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
        Suganath Prabu Subramani 
        <suganath-prabu.subramani@...adcom.com>
Cc:     James Seo <james@...iv.tech>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Kees Cook <keescook@...omium.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 6/6] scsi: mpt3sas: Replace a dynamic allocation with a local variable

This dynamic allocation can be replaced with a local variable.

Signed-off-by: James Seo <james@...iv.tech>
---
 drivers/scsi/mpt3sas/mpt3sas_base.c | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index cd6f36094159..a32a6fa728a7 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -5361,10 +5361,9 @@ _base_update_diag_trigger_pages(struct MPT3SAS_ADAPTER *ioc)
 static int _base_assign_fw_reported_qd(struct MPT3SAS_ADAPTER *ioc)
 {
 	Mpi2ConfigReply_t mpi_reply;
-	Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
+	Mpi2SasIOUnitPage1_t sas_iounit_pg1;
 	Mpi26PCIeIOUnitPage1_t pcie_iounit_pg1;
 	u16 depth;
-	int sz;
 	int rc = 0;
 
 	ioc->max_wideport_qd = MPT3SAS_SAS_QUEUE_DEPTH;
@@ -5374,28 +5373,21 @@ static int _base_assign_fw_reported_qd(struct MPT3SAS_ADAPTER *ioc)
 	if (!ioc->is_gen35_ioc)
 		goto out;
 	/* sas iounit page 1 */
-	sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData);
-	sas_iounit_pg1 = kzalloc(sizeof(Mpi2SasIOUnitPage1_t), GFP_KERNEL);
-	if (!sas_iounit_pg1) {
-		pr_err("%s: failure at %s:%d/%s()!\n",
-		    ioc->name, __FILE__, __LINE__, __func__);
-		return rc;
-	}
 	rc = mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
-	    sas_iounit_pg1, sz);
+	    &sas_iounit_pg1, sizeof(Mpi2SasIOUnitPage1_t));
 	if (rc) {
 		pr_err("%s: failure at %s:%d/%s()!\n",
 		    ioc->name, __FILE__, __LINE__, __func__);
 		goto out;
 	}
 
-	depth = le16_to_cpu(sas_iounit_pg1->SASWideMaxQueueDepth);
+	depth = le16_to_cpu(sas_iounit_pg1.SASWideMaxQueueDepth);
 	ioc->max_wideport_qd = (depth ? depth : MPT3SAS_SAS_QUEUE_DEPTH);
 
-	depth = le16_to_cpu(sas_iounit_pg1->SASNarrowMaxQueueDepth);
+	depth = le16_to_cpu(sas_iounit_pg1.SASNarrowMaxQueueDepth);
 	ioc->max_narrowport_qd = (depth ? depth : MPT3SAS_SAS_QUEUE_DEPTH);
 
-	depth = sas_iounit_pg1->SATAMaxQDepth;
+	depth = sas_iounit_pg1.SATAMaxQDepth;
 	ioc->max_sata_qd = (depth ? depth : MPT3SAS_SATA_QUEUE_DEPTH);
 
 	/* pcie iounit page 1 */
@@ -5414,7 +5406,6 @@ static int _base_assign_fw_reported_qd(struct MPT3SAS_ADAPTER *ioc)
 	    "MaxWidePortQD: 0x%x MaxNarrowPortQD: 0x%x MaxSataQD: 0x%x MaxNvmeQD: 0x%x\n",
 	    ioc->max_wideport_qd, ioc->max_narrowport_qd,
 	    ioc->max_sata_qd, ioc->max_nvme_qd));
-	kfree(sas_iounit_pg1);
 	return rc;
 }
 
-- 
2.39.2