A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-09 13:49:24 -04:00
Code Issues Projects Releases Packages Wiki Activity

net: hns: use struct_size() in devm_kzalloc()

Browse source 
One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:

struct foo {
    int stuff;
    struct boo entry[];
};

instance = devm_kzalloc(dev, sizeof(struct foo) + sizeof(struct boo) * count, GFP_KERNEL);

Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:

instance = devm_kzalloc(dev, struct_size(instance, entry, count), GFP_KERNEL);

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gustavo A. R. Silva 2019-02-25 18:27:57 -06:00 • committed by David S. Miller
commit d89ea4acfc
1 changed files with 3 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

5
drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c
View file

@ -83,8 +83,9 @@ static int hns_ppe_common_get_cfg(struct dsaf_device *dsaf_dev, int comm_index)
else
ppe_num = HNS_PPE_DEBUG_NW_ENGINE_NUM;
ppe_common = devm_kzalloc(dsaf_dev->dev, sizeof(*ppe_common) +
ppe_num * sizeof(struct hns_ppe_cb), GFP_KERNEL);
ppe_common = devm_kzalloc(dsaf_dev->dev,
struct_size(ppe_common, ppe_cb, ppe_num),
GFP_KERNEL);
if (!ppe_common)
return -ENOMEM;