From mboxrd@z Thu Jan 1 00:00:00 1970 From: SF Markus Elfring Date: Mon, 29 Aug 2016 11:09:08 +0000 Subject: [PATCH 2/5] powerpc-MSI: Use kmalloc_array() in ppc4xx_setup_msi_irqs() Message-Id: <01cf542d-c65e-ff66-6fb0-5ce75af184de@users.sourceforge.net> List-Id: References: <566ABCD9.1060404@users.sourceforge.net> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linuxppc-dev@lists.ozlabs.org, Adam Buchbinder , Andrew Donnellan , Benjamin Herrenschmidt , Marc Zyngier , Michael Ellerman , Paul Mackerras , Scott Wood , Sudeep Holla , Thomas Gleixner Cc: LKML , kernel-janitors@vger.kernel.org, Julia Lawall , Paolo Bonzini From: Markus Elfring Date: Mon, 29 Aug 2016 11:11:24 +0200 * A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "kmalloc_array". This issue was detected by using the Coccinelle software. * Replace the specification of a data type by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring --- arch/powerpc/sysdev/ppc4xx_msi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/sysdev/ppc4xx_msi.c b/arch/powerpc/sysdev/ppc4xx_msi.c index 8fb8061..0bd5e4b 100644 --- a/arch/powerpc/sysdev/ppc4xx_msi.c +++ b/arch/powerpc/sysdev/ppc4xx_msi.c @@ -89,7 +89,9 @@ static int ppc4xx_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) if (type = PCI_CAP_ID_MSIX) pr_debug("ppc4xx msi: MSI-X untested, trying anyway.\n"); - msi_data->msi_virqs = kmalloc((msi_irqs) * sizeof(int), GFP_KERNEL); + msi_data->msi_virqs = kmalloc_array(msi_irqs, + sizeof(*msi_data->msi_virqs), + GFP_KERNEL); if (!msi_data->msi_virqs) return -ENOMEM; -- 2.9.3