linux-kernel - Re: [RFC PATCH 2/2] leds: as3645a: Update LED label generation

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Date:   Thu, 14 Dec 2017 13:13:27 -0600
From:   Dan Murphy <dmurphy@...com>
To:     Sakari Ailus <sakari.ailus@....fi>
CC:     <robh+dt@...nel.org>, <mark.rutland@....com>, <rpurdie@...ys.net>,
        <jacek.anaszewski@...il.com>, <pavel@....cz>,
        <laurent.pinchart@...asonboard.com>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-leds@...r.kernel.org>
Subject: Re: [RFC PATCH 2/2] leds: as3645a: Update LED label generation

Sakari

On 12/14/2017 12:03 PM, Sakari Ailus wrote:
> Hi Dan,
> 
> Thanks for the patchset.
> 
> On Tue, Dec 12, 2017 at 03:50:24PM -0600, Dan Murphy wrote:
>> Generate the LED label based off either the
>> DT label node or off the I2C ID in the
>> i2c device id struct.
>>
>> If the label is used then this should denote
>> the LED function.  As an example it would
>> be as3645a:<function>
>>
>>  Otherwise if the label is not
>> used the LED label will be as3645a:flash and
>> as3645a:indicator.
> 
> Which tree the patch is for? I see "id" is a u32 in what I have, and
> also not defined in this scope.

Ah.  I did not notice that the driver used the probe_new call back.

I will be re-sending anyway since this is a RFC

Dan

> 
>>
>> Signed-off-by: Dan Murphy <dmurphy@...com>
>> ---
>>  drivers/leds/leds-as3645a.c | 10 ++++++----
>>  1 file changed, 6 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/leds/leds-as3645a.c b/drivers/leds/leds-as3645a.c
>> index f883616d9e60..197acd69ddcc 100644
>> --- a/drivers/leds/leds-as3645a.c
>> +++ b/drivers/leds/leds-as3645a.c
>> @@ -526,10 +526,11 @@ static int as3645a_parse_node(struct as3645a *flash,
>>  
>>  	rval = of_property_read_string(flash->flash_node, "label", &name);
>>  	if (!rval)
>> -		strlcpy(names->flash, name, sizeof(names->flash));
>> +		snprintf(names->flash, sizeof(names->flash), "%s:%s",
>> +			 id->name, name);
>>  	else
>>  		snprintf(names->flash, sizeof(names->flash),
>> -			 "%s:flash", node->name);
>> +			 "%s:flash", id->name);
>>  
>>  	rval = of_property_read_u32(flash->flash_node, "flash-timeout-us",
>>  				    &cfg->flash_timeout_us);
>> @@ -570,10 +571,11 @@ static int as3645a_parse_node(struct as3645a *flash,
>>  
>>  	rval = of_property_read_string(flash->indicator_node, "label", &name);
>>  	if (!rval)
>> -		strlcpy(names->indicator, name, sizeof(names->indicator));
>> +		snprintf(names->indicator, sizeof(names->indicator), "%s:%s",
>> +			 id->name, name);
>>  	else
>>  		snprintf(names->indicator, sizeof(names->indicator),
>> -			 "%s:indicator", node->name);
>> +			 "%s:indicator", id->name);
>>  
>>  	rval = of_property_read_u32(flash->indicator_node, "led-max-microamp",
>>  				    &cfg->indicator_max_ua);
> 
> 
> 


-- 
------------------
Dan Murphy