[PATCH 06/17] spi/mpc52xx: Use kmalloc_array() in mpc52xx_spi_probe()

SF Markus Elfring
2017-01-13T17:14:45Z

Date: Fri, 13 Jan 2017 14:06:10 +0100

* 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 <elfring@users.sourceforge.net>
---
drivers/spi/spi-mpc52xx.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-mpc52xx.c b/drivers/spi/spi-mpc52xx.c
index c36002110c30..8cc129efe7ba 100644
--- a/drivers/spi/spi-mpc52xx.c
+++ b/drivers/spi/spi-mpc52xx.c
@@ -437,8 +437,9 @@ static int mpc52xx_spi_probe(struct platform_device *op)
ms->gpio_cs_count = of_gpio_count(op->dev.of_node);
if (ms->gpio_cs_count > 0) {
master->num_chipselect = ms->gpio_cs_count;
- ms->gpio_cs = kmalloc(ms->gpio_cs_count * sizeof(unsigned int),
- GFP_KERNEL);
+ ms->gpio_cs = kmalloc_array(ms->gpio_cs_count,
+ sizeof(*ms->gpio_cs),
+ GFP_KERNEL);
if (!ms->gpio_cs) {
rc = -ENOMEM;
goto err_alloc_gpio;
--
2.11.0