spi/mpc52xx: Use kmalloc_array() in mpc52xx_spi_probe()

* 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>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files 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;