From: Vinod Koul <vkoul@kernel.org>
To: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
Cc: Laxman Dewangan <ldewangan@nvidia.com>,
Jon Hunter <jonathanh@nvidia.com>,
Dan Williams <dan.j.williams@intel.com>,
Thierry Reding <thierry.reding@gmail.com>,
dmaengine@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: dmaengine: tegra210-adma: Use struct_size() in devm_kzalloc()
Date: Sun, 20 Jan 2019 10:48:36 +0530 [thread overview]
Message-ID: <20190120051836.GJ4635@vkoul-mobl> (raw)
On 07-01-19, 11:06, 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 = devm_kzalloc(dev, 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 = devm_kzalloc(dev, struct_size(instance, entry, count), GFP_KERNEL);
>
> This code was detected with the help of Coccinelle.
Applied, thanks
next reply other threads:[~2019-01-20 5:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-20 5:18 Vinod Koul [this message]
-- strict thread matches above, loose matches on Subject: below --
2019-01-07 17:06 dmaengine: tegra210-adma: Use struct_size() in devm_kzalloc() Gustavo A. R. Silva
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