linux-kernel - [PATCH] powerpc/powernv/pci: Use kmalloc

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Date:   Wed, 24 Aug 2016 22:36:54 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linuxppc-dev@...ts.ozlabs.org,
        Alexey Kardashevskiy <aik@...abs.ru>,
        Alistair Popple <alistair@...ple.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Gavin Shan <gwshan@...ux.vnet.ibm.com>,
        Ian Munsie <imunsie@....ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        Wei Yang <weiyang@...ux.vnet.ibm.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Julia Lawall <julia.lawall@...6.fr>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: [PATCH] powerpc/powernv/pci: Use kmalloc_array() in two functions

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 24 Aug 2016 22:26:37 +0200

A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus reuse the corresponding function "kmalloc_array".

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 arch/powerpc/platforms/powernv/pci-ioda.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index fd9444f..2366552 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -1305,7 +1305,9 @@ static int pnv_pci_vf_assign_m64(struct pci_dev *pdev, u16 num_vfs)
 	else
 		m64_bars = 1;
 
-	pdn->m64_map = kmalloc(sizeof(*pdn->m64_map) * m64_bars, GFP_KERNEL);
+	pdn->m64_map = kmalloc_array(m64_bars,
+				     sizeof(*pdn->m64_map),
+				     GFP_KERNEL);
 	if (!pdn->m64_map)
 		return -ENOMEM;
 	/* Initialize the m64_map to IODA_INVALID_M64 */
@@ -1572,8 +1574,9 @@ int pnv_pci_sriov_enable(struct pci_dev *pdev, u16 num_vfs)
 
 		/* Allocating pe_num_map */
 		if (pdn->m64_single_mode)
-			pdn->pe_num_map = kmalloc(sizeof(*pdn->pe_num_map) * num_vfs,
-					GFP_KERNEL);
+			pdn->pe_num_map = kmalloc_array(num_vfs,
+							sizeof(*pdn->pe_num_map),
+							GFP_KERNEL);
 		else
 			pdn->pe_num_map = kmalloc(sizeof(*pdn->pe_num_map), GFP_KERNEL);
 
-- 
2.9.3