linux-kernel - Re: [PATCH v3 12/14] drm/rockchip: vop2: Add debugfs support

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Message-ID: <8140e2f4-2081-4492-af17-ce742eef4404@rock-chips.com>
Date:   Wed, 6 Dec 2023 19:27:31 +0800
From:   Andy Yan <andy.yan@...k-chips.com>
To:     Sascha Hauer <sha@...gutronix.de>
Cc:     Andy Yan <andyshrk@....com>, heiko@...ech.de, hjc@...k-chips.com,
        dri-devel@...ts.freedesktop.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        krzysztof.kozlowski+dt@...aro.org, robh+dt@...nel.org,
        devicetree@...r.kernel.org, sebastian.reichel@...labora.com,
        kever.yang@...k-chips.com, chris.obbard@...labora.com
Subject: Re: [PATCH v3 12/14] drm/rockchip: vop2: Add debugfs support

Hi Sascha:

On 12/6/23 19:20, Sascha Hauer wrote:
> On Wed, Dec 06, 2023 at 06:20:58PM +0800, Andy Yan wrote:
>> Hi Sascha:
>>
>>>> +	unsigned int n = vop2->data->regs_dump_size;
>>>
>>> 'n' is used only once, it might be clearer just to use the value where
>>> needed and drop the extra variable.
>>
>> Okay, will do.
>>>
>>>> +	unsigned int i;
>>>> +
>>>> +	drm_modeset_lock_all(drm_dev);
>>>> +
>>>> +	if (vop2->enable_count) {
>>>> +		for (i = 0; i < n; i++) {
>>>> +			dump = &vop2->data->regs_dump[i];
>>>> +			vop2_regs_print(vop2, s, dump, false);
>>>> +		}
>>>> +	} else {
>>>> +		seq_printf(s, "VOP disabled:\n");
>>>
>>> There's nothing following after the ':', right? Then this should be
>>> "VOP: disabled\n" or without the colon at all.
>>
>> the colon will be droped in next versin.
>>
>>>
>>>> +	}
>>>> +	drm_modeset_unlock_all(drm_dev);
>>>
>>> This code is repeated in vop2_active_regs_show() below. Maybe factor
>>> this out to a common function?
>>>
>>
>>
>> Do you mean all the code between drm_modeset_lock_all and drm_modeset_unlock_all ?
> 
> Including drm_modeset_lock_all() and drm_modeset_unlock_all(), yes.
> 

Okay, will try in v4.


> Sascha
>