From: Vinod Koul <vkoul@kernel.org>
To: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ioat/dca: Use struct_size() helper
Date: Wed, 4 Sep 2019 10:18:22 +0530 [thread overview]
Message-ID: <20190904044822.GX2672@vkoul-mobl> (raw)
In-Reply-To: <20190828184015.GA4273@embeddedor>
On 28-08-19, 13:40, 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 ioat_dca_priv {
> ...
> struct ioat_dca_slot req_slots[0];
> };
>
> Make use of the struct_size() helper instead of an open-coded version
> in order to avoid any potential type mistakes.
>
> So, replace the following form:
>
> sizeof(*ioatdca) + (sizeof(struct ioat_dca_slot) * slots)
>
> with:
>
> struct_size(ioatdca, req_slots, slots)
>
> This code was detected with the help of Coccinelle.
Please do not invent subsystem tags, git log should tell you the
convention to be used!
Applied after fixing tags, thanks
--
~Vinod
prev parent reply other threads:[~2019-09-04 4:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-28 18:40 [PATCH] ioat/dca: Use struct_size() helper Gustavo A. R. Silva
2019-08-28 19:38 ` Dave Jiang
2019-09-04 4:48 ` Vinod Koul [this message]
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