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From: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
To: Eizan Miyamoto <eizan@google.com>
Cc: linux-kernel@vger.kernel.org, wenst@chromium.org,
	houlong.wei@mediatek.com, yong.wu@mediatek.com,
	enric.balletbo@collabora.com, devicetree@vger.kernel.org,
	chunkuang.hu@kernel.org,
	Andrew-CT Chen <andrew-ct.chen@mediatek.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Minghsiu Tsai <minghsiu.tsai@mediatek.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org, linux-mediatek@lists.infradead.org
Subject: Re: [PATCH v6 1/9] mtk-mdp: propagate errors from clock_on
Date: Mon, 9 Aug 2021 09:42:56 +0200	[thread overview]
Message-ID: <171db357-0d8a-6676-32dd-7c506708375c@collabora.com> (raw)
In-Reply-To: <CAOak1e_xw84Q+ikAn7TEqie00Sbv4Qpaax==jZ5MJVfPP1pf0Q@mail.gmail.com>

Hi,

On 09.08.21 05:23, Eizan Miyamoto wrote:
> Hi Dafna, thank you very much for spending time to review the patch,
> your time spent is very much appreciated.
> 
> On Thu, Aug 5, 2021 at 4:06 PM Dafna Hirschfeld
> <dafna.hirschfeld@collabora.com> wrote:
>>> +err_clk_prepare_enable:
>>> +     for (--i; i >= 0; i--) {
>>> +             if (IS_ERR(comp->clk[i]))
>>> +                     continue;
>>> +             clk_disable_unprepare(comp->clk[i]);
>>>        }
>>> +
>>> +     return status;
>>
>> There is an API function clk_bulk_prepare_enable to prepare and enable an array of clks
>> so you can just use it.
> 
> As per Enric's suggestion earlier in this email thread, are you OK
> with me making this change in a follow-up patch, particularly since
> the logic as it is was preserved from previous functionality?

sure,
I just give suggestions.
A follow-up patch would be nice.

> 
>>> -static void mtk_mdp_clock_on(struct mtk_mdp_dev *mdp)
>>> +static int mtk_mdp_clock_on(struct mtk_mdp_dev *mdp)
>>>    {
>>> -     struct device *dev = &mdp->pdev->dev;
>>>        struct mtk_mdp_comp *comp_node;
>>> +     int status;
>>> +     struct device *dev = &mdp->pdev->dev;
>>> +     int err;
>>>
>>> -     list_for_each_entry(comp_node, &mdp->comp_list, node)
>>> -             mtk_mdp_comp_clock_on(dev, comp_node);
>>> +     list_for_each_entry(comp_node, &mdp->comp_list, node) {
>>> +             err = mtk_mdp_comp_clock_on(dev, comp_node);
>>> +             if (err) {
>>> +                     status = err;
>>
>> You can get rid of the new var 'status' and just return ret in case of error
> 
> This seems like a nit (please let me know if you disagree), and it's
> also cleaned up in a follow-on patch in the series ("don't
> pm_run_time_get/put for master comp in clock_on"). Is making the
> change you are suggesting here something that should require uploading
> a new series version?

Hi, no, I am fine with it. No need for new version.


Thanks,
Dafna

> 
> Eizan
> 

  reply	other threads:[~2021-08-09  7:43 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-02 12:12 [PATCH v6 0/9] Refactor MTK MDP driver into core/components Eizan Miyamoto
2021-08-02 12:12 ` [PATCH v6 1/9] mtk-mdp: propagate errors from clock_on Eizan Miyamoto
2021-08-03 10:26   ` Enric Balletbo Serra
2021-08-05  6:06   ` Dafna Hirschfeld
2021-08-09  3:23     ` Eizan Miyamoto
2021-08-09  7:42       ` Dafna Hirschfeld [this message]
2021-08-16  0:46   ` houlong wei
2021-08-02 12:12 ` [PATCH v6 2/9] mtk-mdp: add driver to probe mdp components Eizan Miyamoto
2021-08-03 10:26   ` Enric Balletbo Serra
2021-08-05  6:40   ` Dafna Hirschfeld
2021-08-09  3:23     ` Eizan Miyamoto
2021-08-09  7:53       ` Dafna Hirschfeld
2021-08-11 11:15         ` Eizan Miyamoto
2021-08-16  1:05   ` houlong wei
2021-08-02 12:12 ` [PATCH v6 3/9] mtk-mdp: use pm_runtime in MDP component driver Eizan Miyamoto
2021-08-03 10:26   ` Enric Balletbo Serra
2021-08-16  1:07   ` houlong wei
2021-08-02 12:12 ` [PATCH v6 4/9] media: mtk-mdp: don't pm_run_time_get/put for master comp in clock_on Eizan Miyamoto
2021-08-03 10:27   ` Enric Balletbo Serra
2021-08-16  1:10   ` houlong wei
2021-08-02 12:12 ` [PATCH v6 5/9] mtk-mdp: make mdp driver to be loadable by platform_device_register*() Eizan Miyamoto
2021-08-03 10:27   ` Enric Balletbo Serra
2021-08-16  1:15   ` houlong wei
2021-08-16  3:37   ` houlong wei
2021-08-02 12:12 ` [PATCH v6 6/9] soc: mediatek: mmsys: instantiate mdp virtual device from mmsys Eizan Miyamoto
2021-08-03 10:27   ` Enric Balletbo Serra
2021-08-16  1:18   ` houlong wei
2021-08-02 12:12 ` [PATCH v6 7/9] media: mtk-mdp: use mdp-rdma0 alias to point to MDP master Eizan Miyamoto
2021-08-03 10:27   ` Enric Balletbo Serra
2021-08-03 11:46     ` Eizan Miyamoto
2021-08-16  3:00   ` houlong wei
2021-08-16  4:52     ` houlong wei
2021-08-18  7:50       ` Eizan Miyamoto
2021-08-18 15:42         ` houlong wei
2021-08-18  7:43     ` Eizan Miyamoto
2021-08-18 15:34       ` houlong wei
2021-08-02 12:12 ` [PATCH v6 8/9] dts: mtk-mdp: remove mediatek,vpu property from primary MDP device Eizan Miyamoto
2021-08-03 10:27   ` Enric Balletbo Serra
2021-08-02 12:12 ` [PATCH v6 9/9] dt-bindings: mediatek: remove vpu requirement from mtk-mdp Eizan Miyamoto
2021-08-03 10:27   ` Enric Balletbo Serra
2021-08-06 21:47   ` Rob Herring
2021-08-03 10:29 ` [PATCH v6 0/9] Refactor MTK MDP driver into core/components Enric Balletbo Serra

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