powerpc/spufs: use struct_size() in kmalloc()

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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;
    void *entry[];
};

instance = kmalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);

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

instance = kmalloc(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: Michael Ellerman <mpe@ellerman.id.au>

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Gustavo A. R. Silva 2019-01-08 12:37:20 -06:00 • committed by Michael Ellerman

parent fbe3ab014f

commit 00def7130a

1 changed files with 2 additions and 3 deletions

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arch/powerpc/platforms/cell/spufs/file.c

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