[PATCH 30/34] [media] DaVinci-VPIF-Display: Use kcalloc() in vpif_probe()

From: SF Markus Elfring
Date: Wed Oct 12 2016 - 11:15:07 EST


From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 12 Oct 2016 15:30:44 +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 "kcalloc".

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@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/media/platform/davinci/vpif_display.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c
index 75b2723..80121e8 100644
--- a/drivers/media/platform/davinci/vpif_display.c
+++ b/drivers/media/platform/davinci/vpif_display.c
@@ -1279,8 +1279,7 @@ static __init int vpif_probe(struct platform_device *pdev)
vpif_obj.config = pdev->dev.platform_data;
subdev_count = vpif_obj.config->subdev_count;
subdevdata = vpif_obj.config->subdevinfo;
- vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
- GFP_KERNEL);
+ vpif_obj.sd = kcalloc(subdev_count, sizeof(*vpif_obj.sd), GFP_KERNEL);
if (vpif_obj.sd == NULL) {
vpif_err("unable to allocate memory for subdevice pointers\n");
err = -ENOMEM;
--
2.10.1