linux-kernel - Re: [PATCH] HID: rmi: change logging level of log messages related to unexpected reports

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Message-ID: <20140715190723.GC21045@mail.corp.redhat.com>
Date:	Tue, 15 Jul 2014 15:07:23 -0400
From:	Benjamin Tissoires   
	<benjamin.tissoires@...hat.com>
To:	Andrew Duggan <aduggan@...aptics.com>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jiri Kosina <jkosina@...e.cz>
Subject: Re: [PATCH] HID: rmi: change logging level of log messages related
 to unexpected reports

On Jul 11 2014 or thereabouts, Andrew Duggan wrote:
> Userspace tools may use hidraw to perform operations on the device from userspace while
> hid-rmi is bound to the device. This can cause hid-rmi to print error messages when its
> ->raw_event() callback gets called as the reports pass through the HID stack. In this case
> receiving responses which were not initiated by hid-rmi is not actually an error so the resulting
> error messages are incorrect and misleading. This patch changes the log messages to debug so
> that the messages can be turned on in the event that there is a problem and there is not
> a userspace tool running.
> 
> Signed-off-by: Andrew Duggan <aduggan@...aptics.com>
> ---

Fair enough

Reviewed-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>

Cheers,
Benjamin

>  drivers/hid/hid-rmi.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
> index 578bbe6..25f571a 100644
> --- a/drivers/hid/hid-rmi.c
> +++ b/drivers/hid/hid-rmi.c
> @@ -377,7 +377,7 @@ static int rmi_input_event(struct hid_device *hdev, u8 *data, int size)
>  	irq_mask |= hdata->f30.irq_mask;
>  
>  	if (data[1] & ~irq_mask)
> -		hid_warn(hdev, "unknown intr source:%02lx %s:%d\n",
> +		hid_dbg(hdev, "unknown intr source:%02lx %s:%d\n",
>  			data[1] & ~irq_mask, __FILE__, __LINE__);
>  
>  	if (hdata->f11.interrupt_base < hdata->f30.interrupt_base) {
> @@ -400,7 +400,7 @@ static int rmi_read_data_event(struct hid_device *hdev, u8 *data, int size)
>  	struct rmi_data *hdata = hid_get_drvdata(hdev);
>  
>  	if (!test_bit(RMI_READ_REQUEST_PENDING, &hdata->flags)) {
> -		hid_err(hdev, "no read request pending\n");
> +		hid_dbg(hdev, "no read request pending\n");
>  		return 0;
>  	}
>  
> -- 
> 1.9.1
> 
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