igb: use struct_size() helper

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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:

size = struct_size(instance, entry, count);

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>

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Gustavo A. R. Silva 2019-02-07 22:15:40 -06:00 • committed by David S. Miller

parent c397ab21ba

commit a0feac18b8

1 changed files with 3 additions and 3 deletions

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6

drivers/net/ethernet/intel/igb/igb_main.c

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