iwlwifi: mvm: d3: use struct_size() in kzalloc()

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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 = kzalloc(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 = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);

This issue was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

...

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Gustavo A. R. Silva 2018-08-23 20:15:40 -05:00 • committed by Kalle Valo

parent b71a9c35f2

commit 83ea00d687

1 changed files with 2 additions and 4 deletions

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drivers/net/wireless/intel/iwlwifi/mvm/d3.c

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