linux-kernel - Re: [PATCH] extcon: Redefine the unique id of supported external connectors without 'enum extcon' type

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Date:	Fri, 12 Jun 2015 14:04:06 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	balbi@...com, myungjoo.ham@...sung.com, k.kozlowski@...sung.com,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH] extcon: Redefine the unique id of supported external
 connectors without 'enum extcon' type

Dear Greg,

On 06/12/2015 01:29 PM, Greg KH wrote:
> On Fri, Jun 12, 2015 at 11:10:06AM +0900, Chanwoo Choi wrote:
>> This patch just redefine the unique id of supported external connectors without
>> 'enum extcon' type. Because unique id would be used on devictree file(*.dts) to
>> indicate the specific external connectors like key number of input framework.
>> So, I have the plan to move this definitions to following header file which
>> includes the unique id of supported external connectors.
>> - include/dt-bindings/extcon/extcon.h
> 
> Do we have other such fields in dt-bindings that are not enumerated
> types?

I think that 'integer' type is more appropriate than enumerated type
in header file of includ/dt-bindings/ as following:

- Previous defintions
enum extcon {
	/* USB external connector */
	EXTCON_USB		= 0x1,
	EXTCON_USB_HOST		= 0x2,
	......
};

- New definitions without specific 'enum extcon' type.
#define EXTCON_USB		1
#define EXTCON_USB_HOST 	2
......

> 
> What's wrong with keeping this as-is and not changing to an integer?
> 
>> Fixes: 2a9de9c0f08d ("extcon: Use the unique id for external connector instead of string")
> 
> How is this a bugfix?

It is my mistake. This patch is not bug fix.

Best Regards,
Chanwoo Choi
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