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Date: Sun, 20 Jan 2019 10:50:17 +0530 From: Vinod Koul <vkoul@...nel.org> To: "Gustavo A. R. Silva" <gustavo@...eddedor.com> Cc: Dan Williams <dan.j.williams@...el.com>, dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] dmaengine: timb_dma: Use struct_size() in kzalloc() On 08-01-19, 09:58, 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. Applied, thanks -- ~Vinod
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