dmaengine Archive on lore.kernel.org
 help / color / Atom feed
From: Vinod Koul <vkoul@kernel.org>
To: Amit Tomer <amittomer25@gmail.com>
Cc: "Andre Przywara" <andre.przywara@arm.com>,
	"Andreas Färber" <afaerber@suse.de>,
	"Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
	dan.j.williams@intel.com, cristian.ciocaltea@gmail.com,
	dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	linux-actions@lists.infradead.org
Subject: Re: [PATCH v4 02/10] dmaengine: Actions: Add support for S700 DMA engine
Date: Tue, 30 Jun 2020 19:54:27 +0530
Message-ID: <20200630142427.GP2599@vkoul-mobl> (raw)
In-Reply-To: <CABHD4K9VOWpC7=o2VKrqoxEtMQ2gFv_Qs885dBKL1o+B_fe_3g@mail.gmail.com>

On 30-06-20, 15:17, Amit Tomer wrote:
> Hi Vinod,
> 
> On Mon, Jun 29, 2020 at 3:22 PM Vinod Koul <vkoul@kernel.org> wrote:
> 
> > If you use of_device_get_match_data() you will not fall into this :)
> 
> But again, of_device_get_match_data() returns void *, and we need
> "uintptr_t" in order to type cast it properly (at-least without
> warning).

Not really, you can cast from void * to you own structure.. btw why do
you need uintptr_t?

> 
> Also, while looking around found the similar warning for other file
> where it uses " of_device_get_match_data()"
> drivers/pci/controller/pcie-iproc-platform.c:56:15: warning: cast to
> smaller integer type 'enum iproc_pcie_type' from 'const void *'
> [-Wvoid-pointer-to-enum-cast]
>         pcie->type = (enum iproc_pcie_type) of_device_get_match_data(dev);

The problem is a pointer to enum conversion :) I think the right way
would be to do would be below

        soc_type =  (enum foo)of_device_get_match_data(dev);

or
        soc_type =  (unsigned long) of_device_get_match_data(dev);

which I think should be fine in gcc, but possibly give you above warning
in clang.. but i thought that was fixed in clang https://reviews.llvm.org/D75758

Thanks
-- 
~Vinod

  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1591697830-16311-1-git-send-email-amittomer25@gmail.com>
2020-06-09 10:17 ` [PATCH v4 01/10] dmaengine: Actions: get rid of bit fields from dma descriptor Amit Singh Tomar
2020-06-09 10:17 ` [PATCH v4 02/10] dmaengine: Actions: Add support for S700 DMA engine Amit Singh Tomar
2020-06-24  6:15   ` Vinod Koul
2020-06-24  9:35     ` André Przywara
2020-06-29  8:28       ` Amit Tomer
2020-06-29  9:54       ` Vinod Koul
2020-06-29 11:19         ` André Przywara
2020-06-29 13:21           ` Vinod Koul
2020-06-29  8:19     ` Amit Tomer
2020-06-29  9:52       ` Vinod Koul
2020-06-30  9:47         ` Amit Tomer
2020-06-30 14:24           ` Vinod Koul [this message]
2020-06-30 18:14             ` Amit Tomer

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200630142427.GP2599@vkoul-mobl \
    --to=vkoul@kernel.org \
    --cc=afaerber@suse.de \
    --cc=amittomer25@gmail.com \
    --cc=andre.przywara@arm.com \
    --cc=cristian.ciocaltea@gmail.com \
    --cc=dan.j.williams@intel.com \
    --cc=dmaengine@vger.kernel.org \
    --cc=linux-actions@lists.infradead.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=manivannan.sadhasivam@linaro.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

dmaengine Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/dmaengine/0 dmaengine/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dmaengine dmaengine/ https://lore.kernel.org/dmaengine \
		dmaengine@vger.kernel.org
	public-inbox-index dmaengine

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.dmaengine


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git