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Date: Mon, 13 Feb 2017 19:51:06 -0800 From: Dmitry Torokhov <dmitry.torokhov@...il.com> To: Richard Cochran <richardcochran@...il.com> Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH 2/4] ptp: use kcalloc/kmallco_array when allocating arrays kcalloc/kmalloc_array are more semantically correct when allocating arrays of objects, and overflow-safe. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com> --- 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
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