From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752084AbdBNDwB (ORCPT ); Mon, 13 Feb 2017 22:52:01 -0500 Received: from mail-ot0-f195.google.com ([74.125.82.195]:32998 "EHLO mail-ot0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751324AbdBNDvM (ORCPT ); Mon, 13 Feb 2017 22:51:12 -0500 From: Dmitry Torokhov To: Richard Cochran Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/4] ptp: use kcalloc/kmallco_array when allocating arrays Date: Mon, 13 Feb 2017 19:51:06 -0800 Message-Id: <20170214035108.19622-2-dmitry.torokhov@gmail.com> X-Mailer: git-send-email 2.11.0.483.g087da7b7c-goog In-Reply-To: <20170214035108.19622-1-dmitry.torokhov@gmail.com> References: <20170214035108.19622-1-dmitry.torokhov@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org kcalloc/kmalloc_array are more semantically correct when allocating arrays of objects, and overflow-safe. Signed-off-by: Dmitry Torokhov --- drivers/ptp/ptp_sysfs.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/ptp/ptp_sysfs.c b/drivers/ptp/ptp_sysfs.c index 53d43954a974..77843790c381 100644 --- a/drivers/ptp/ptp_sysfs.c +++ b/drivers/ptp/ptp_sysfs.c @@ -269,13 +269,13 @@ static int ptp_populate_pins(struct ptp_clock *ptp) struct ptp_clock_info *info = ptp->info; int err = -ENOMEM, i, n_pins = info->n_pins; - ptp->pin_dev_attr = kzalloc(n_pins * sizeof(*ptp->pin_dev_attr), + ptp->pin_dev_attr = kcalloc(n_pins, sizeof(*ptp->pin_dev_attr), GFP_KERNEL); if (!ptp->pin_dev_attr) goto no_dev_attr; - ptp->pin_attr = kzalloc((1 + n_pins) * sizeof(struct attribute *), - GFP_KERNEL); + ptp->pin_attr = kmalloc_array(1 + n_pins, sizeof(*ptp->pin_attr), + GFP_KERNEL); if (!ptp->pin_attr) goto no_pin_attr; @@ -289,6 +289,9 @@ static int ptp_populate_pins(struct ptp_clock *ptp) ptp->pin_attr[i] = &da->attr; } + /* NULL terminator */ + ptp->pin_attr[n_pins] = NULL; + ptp->pin_attr_group.name = "pins"; ptp->pin_attr_group.attrs = ptp->pin_attr; -- 2.11.0.483.g087da7b7c-goog