From mboxrd@z Thu Jan 1 00:00:00 1970 From: bbrezillon@kernel.org (Boris Brezillon) Date: Wed, 16 Jan 2019 09:40:26 +0100 Subject: mtd: lpddr: Use struct_size() in kzalloc() In-Reply-To: <20190108210946.GA4014@embeddedor> Message-ID: <20190116084026.29622-1-bbrezillon@kernel.org> To: linux-mtd@lists.infradead.org List-Id: linux-mtd.lists.infradead.org From: Boris Brezillon On Tue, 2019-01-08 at 21:09:46 UTC, "Gustavo A. R. Silva" wrote: > 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 code was detected with the help of Coccinelle. > > Signed-off-by: Gustavo A. R. Silva Applied to http://git.infradead.org/linux-mtd.git mtd/next, thanks. Boris