linux-kernel - Re: [PATCH] HID: logitech-hidpp: avoid repeated "multiplier = " log messages

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Date:   Mon, 06 Jul 2020 13:38:04 +0100
From:   Filipe Laíns <filipe.lains@...il.com>
To:     "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>,
        Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:     Harry Cutts <hcutts@...omium.org>,
        Peter Hutterer <peter.hutterer@...-t.net>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] HID: logitech-hidpp: avoid repeated "multiplier = "
 log messages

On Sun, 2020-07-05 at 19:34 +0200, Maciej S. Szmigiero wrote:
> These messages appear each time the mouse wakes from sleep, in my
> case
> (Logitech M705), every minute or so.
> Let's downgrade them to the "debug" level so they don't fill the
> kernel log
> by default.
> 
> While we are at it, let's make clear that this is a wheel multiplier
> (and
> not, for example, XY movement multiplier).
> 
> Fixes: 4435ff2f09a2 ("HID: logitech: Enable high-resolution scrolling
> on Logitech mice")
> Cc: stable@...r.kernel.org
> Signed-off-by: Maciej S. Szmigiero <mail@...iej.szmigiero.name>
> ---
> Sending again since the previous message bounced for most recipients.
> 
>  drivers/hid/hid-logitech-hidpp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-
> logitech-hidpp.c
> index 1e1cf8eae649..b8b53dc95e86 100644
> --- a/drivers/hid/hid-logitech-hidpp.c
> +++ b/drivers/hid/hid-logitech-hidpp.c
> @@ -3146,7 +3146,7 @@ static int hi_res_scroll_enable(struct
> hidpp_device *hidpp)
>  		multiplier = 1;
>  
>  	hidpp->vertical_wheel_counter.wheel_multiplier = multiplier;
> -	hid_info(hidpp->hid_dev, "multiplier = %d\n", multiplier);
> +	hid_dbg(hidpp->hid_dev, "wheel multiplier = %d\n", multiplier);
>  	return 0;
>  }
>  

I have seen this being useful in some cases, however I do not have a
strong opinion on it. Peter would know better.

Cheers,
Filipe Laíns

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