linux-kernel - Re: [PATCH] media: soc-camera: increase the length of clk_name on soc_of

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Date:	Fri, 18 Sep 2015 18:59:29 +0800
From:	Josh Wu <josh.wu@...el.com>
To:	Guennadi Liakhovetski <g.liakhovetski@....de>
CC:	Linux Media Mailing List <linux-media@...r.kernel.org>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] media: soc-camera: increase the length of clk_name on
 soc_of_bind()

Hi, Guennadi

On 8/30/2015 10:06 PM, Guennadi Liakhovetski wrote:
> Hi Josh,
>
> Sorry, I missed the 4.3 merge cycle, but isn't this patch a fix? Isn't it
> fixing soc-camera / atmel-isi on a specific platform, where the clock name
> is longer, than currently supported? Is this platform in the mainline and
> its current camera support is broken because of this?

I missed your email, so sorry for the late reply.

yes, it will break the detect flow if the i2c camera is loaded as module.

>   In such a case we
> could still push it in for 4.3

So it is a fix, it is great if this one can still go into 4.3.

Best Regards,
Josh Wu
>
> Thanks
> Guennadi
>
> On Tue, 4 Aug 2015, Josh Wu wrote:
>
>> Since in soc_of_bind() it may use the of node's full name as the clk_name,
>> and this full name may be longer than 32 characters, take at91 i2c sensor
>> as an example, length is 34 bytes:
>>     /ahb/apb/i2c@...28000/camera@...0
>>
>> So this patch increase the clk_name[] array size to 64. It seems big
>> enough so far.
>>
>> Signed-off-by: Josh Wu <josh.wu@...el.com>
>> ---
>>
>>   drivers/media/platform/soc_camera/soc_camera.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/media/platform/soc_camera/soc_camera.c b/drivers/media/platform/soc_camera/soc_camera.c
>> index d708df4..fcf3e97 100644
>> --- a/drivers/media/platform/soc_camera/soc_camera.c
>> +++ b/drivers/media/platform/soc_camera/soc_camera.c
>> @@ -1621,7 +1621,7 @@ static int soc_of_bind(struct soc_camera_host *ici,
>>   	struct soc_camera_async_client *sasc;
>>   	struct soc_of_info *info;
>>   	struct i2c_client *client;
>> -	char clk_name[V4L2_SUBDEV_NAME_SIZE];
>> +	char clk_name[V4L2_SUBDEV_NAME_SIZE + 32];
>>   	int ret;
>>   
>>   	/* allocate a new subdev and add match info to it */
>> -- 
>> 1.9.1
>>

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