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author | Gustavo A. R. Silva <gustavo@embeddedor.com> | 2019-02-18 13:06:41 -0600 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-19 14:41:38 +0100 |
commit | 5ebf5c890324ffa5eaca579dac6913f3e29a28e3 (patch) | |
tree | db6492855529ce765dee22f752bf2dd3f3c51ea5 /COPYING | |
parent | eeca7606dd6e2445f505903f235e908eb7b78dfc (diff) |
usb: core: config: Use struct_size() in 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 = kzalloc(size, GFP_KERNEL);
Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:
instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);
Notice that, in this case, variable len 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'COPYING')
0 files changed, 0 insertions, 0 deletions