linux-kernel - Re: [PATCH 2/9] media: platform: Add c3 mipi csi2 driver

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Message-ID: <54441e84-b683-4e6c-a169-d8b0e685fb55@amlogic.com>
Date: Wed, 4 Sep 2024 16:53:56 +0800
From: Keke Li <keke.li@...ogic.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
 Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>
Cc: linux-media@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, kieran.bingham@...asonboard.com,
 laurent.pinchart@...asonboard.com, dan.scally@...asonboard.com
Subject: Re: [PATCH 2/9] media: platform: Add c3 mipi csi2 driver

Hi Krzysztof,

        Thanks for your reply.

On 2024/9/3 22:10, Krzysztof Kozlowski wrote:
> [You don't often get email from krzk@...nel.org. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
>
> [ EXTERNAL EMAIL ]
>
> On 03/09/2024 08:57, Keke Li via B4 Relay wrote:
>> From: Keke Li <keke.li@...ogic.com>
>>
>> This driver is used to receive mipi data from image sensor.
>>
>> Signed-off-by: Keke Li <keke.li@...ogic.com>
>
> ...
>
>> +static int c3_mipi_csi_probe(struct platform_device *pdev)
>> +{
>> +     struct device *dev = &pdev->dev;
>> +     struct csi_device *csi;
>> +     int ret;
>> +
>> +     csi = devm_kzalloc(dev, sizeof(*csi), GFP_KERNEL);
>> +     if (!csi)
>> +             return -ENOMEM;
>> +
>> +     csi->info = of_device_get_match_data(dev);
>> +     csi->dev = dev;
>> +
>> +     ret = c3_mipi_csi_ioremap_resource(csi);
>> +     if (ret) {
>> +             dev_err(dev, "Failed to ioremap resource: %d\n", ret);
>> +             return ret;
>> +     }
>> +
>> +     ret = c3_mipi_csi_configure_clocks(csi);
>> +     if (ret) {
>> +             dev_err(dev, "Failed to configure clocks: %d\n", ret);
>> +             return ret;
> Syntax is return dev_err_probe. This was repeated multiple times, so
> please organize some inside-Amlogic sessions so you will learn from
> somebody's mistakes/reviews. That's way other developers do not repeat
> the same issue.

Will use dev_err_probe.

I will report this issue to my manager and learn from experiences of others.

>
> Best regards,
> Krzysztof
>