linux-kernel - Re: [PATCH] Input: elan_i2c - Reduce the resume time for new dev ices

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Date:   Mon, 8 Mar 2021 17:37:47 -0800
From:   'Dmitry Torokhov' <dmitry.torokhov@...il.com>
To:     jingle <jingle.wu@....com.tw>
Cc:     'linux-kernel' <linux-kernel@...r.kernel.org>,
        'linux-input' <linux-input@...r.kernel.org>,
        'phoenix' <phoenix@....com.tw>,
        "'dave.wang'" <dave.wang@....com.tw>,
        "'josh.chen'" <josh.chen@....com.tw>
Subject: Re: [PATCH] Input: elan_i2c - Reduce the resume time for new dev ices

Hi Jingle,

On Mon, Mar 08, 2021 at 04:56:14PM +0800, jingle wrote:
> Hi Dmitry:
> 
> 1. missing "i<" 
> +	u32 quirks = 0;
> +	int i;
> +
> +	for (i = 0; ARRAY_SIZE(elan_i2c_quirks); i++) {
> 
> -> for (i = 0; i<ARRAY_SIZE(elan_i2c_quirks); i++) {

Yes, you are right of course. Was this the only issue with the updated
patch? Did it work for you otherwise?

> 
> 2. elan_resume () funtion are different with at Chromeos driver.
> @@ -1384,7 +1422,7 @@ static int __maybe_unused elan_resume(struct device
> *dev)
>  		goto err;
>  	}
>  
> -	error = elan_initialize(data);
> +	error = elan_initialize(data, data->quirks &
> ETP_QUIRK_QUICK_WAKEUP);
>  	if (error)
>  		dev_err(dev, "initialize when resuming failed: %d\n",
> error);
> 
> -> https://chromium.googlesource.com/chromiumos/third_party/kernel/+/ref
> -> s/heads/chromeos-5.4/drivers/input/mouse/elan_i2c_core.c#1434
> -> error = elan_initialize(data);  this code is in elan_reactivate()
> function at Chromeos driver.
> -> Will this change affect cherrypick from linux kernel to chromeos?

Yes, we would need to adjust the patch for Chrome OS and have
elan_reactivate() to call elan_initialize() with appropriate argument.

Thanks.

-- 
Dmitry