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author | Gustavo A. R. Silva <gustavo@embeddedor.com> | 2019-02-07 19:16:03 -0600 |
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committer | David S. Miller <davem@davemloft.net> | 2019-02-08 22:57:27 -0800 |
commit | 33b363e004fdb6abf12a5b0c51dc2c221d352cac (patch) | |
tree | f936f3ffc730a12de3d8150734e439ef937d0064 /net/dsa/tag_ksz.c | |
parent | b4ba9354cc303c6ae8b223b335cdecea87ac7201 (diff) | |
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net: dsa: use struct_size() in devm_kzalloc()
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[];
};
size = sizeof(struct foo) + count * sizeof(struct boo);
instance = alloc(size, GFP_KERNEL)
Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:
instance = alloc(struct_size(instance, entry, count), GFP_KERNEL)
Notice that, in this case, variable size is not necessary, hence it is
removed.
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa/tag_ksz.c')
0 files changed, 0 insertions, 0 deletions