linux-kernel - Re: [PATCH] drm: Drop owner assignment from i2c

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Message-id: <559F6DB6.9010000@samsung.com>
Date:	Fri, 10 Jul 2015 16:01:10 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Mark yao <mark.yao@...k-chips.com>,
	David Airlie <airlied@...ux.ie>,
	Heiko Stuebner <heiko@...ech.de>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH] drm: Drop owner assignment from i2c_driver

On 10.07.2015 15:50, Mark yao wrote:
> On 2015年07月10日 13:36, Krzysztof Kozlowski wrote:
>> i2c_driver does not need to set an owner because i2c_register_driver()
>> will set it.
>>
>> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
>>
>> ---
>>
>> The coccinelle script which generated the patch was sent here:
>> http://www.spinics.net/lists/kernel/msg2029903.html
>> ---
>>   drivers/gpu/drm/bridge/ps8622.c             | 1 -
>>   drivers/gpu/drm/bridge/ptn3460.c            | 1 -
>>   drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 1 -
>>   3 files changed, 3 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/bridge/ps8622.c
>> b/drivers/gpu/drm/bridge/ps8622.c
>> index 1a6607beb29f..be881e9fef8f 100644
>> --- a/drivers/gpu/drm/bridge/ps8622.c
>> +++ b/drivers/gpu/drm/bridge/ps8622.c
>> @@ -668,7 +668,6 @@ static struct i2c_driver ps8622_driver = {
>>       .remove        = ps8622_remove,
>>       .driver        = {
>>           .name    = "ps8622",
>> -        .owner    = THIS_MODULE,
>>           .of_match_table = ps8622_devices,
>>       },
>>   };
>> diff --git a/drivers/gpu/drm/bridge/ptn3460.c
>> b/drivers/gpu/drm/bridge/ptn3460.c
>> index 1b1bf2384815..0ffa3a6a206a 100644
>> --- a/drivers/gpu/drm/bridge/ptn3460.c
>> +++ b/drivers/gpu/drm/bridge/ptn3460.c
>> @@ -400,7 +400,6 @@ static struct i2c_driver ptn3460_driver = {
>>       .remove        = ptn3460_remove,
>>       .driver        = {
>>           .name    = "nxp,ptn3460",
>> -        .owner    = THIS_MODULE,
>>           .of_match_table = ptn3460_match,
>>       },
>>   };
>> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
>> b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
>> index 01b558fe3695..9a0c2911272a 100644
>> --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
>> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
>> @@ -555,7 +555,6 @@ static struct platform_driver
>> rockchip_drm_platform_driver = {
>>       .probe = rockchip_drm_platform_probe,
>>       .remove = rockchip_drm_platform_remove,
>>       .driver = {
>> -        .owner = THIS_MODULE,
> 
> But rockchip drm is platform driver not i2c_driver, why remove its .owner ?

Oh, indeed. Thanks for spotting this.

The 'owner' is set by core for platform drivers as well. Most platform
drivers were already converted (I think by Wolfram Sang). I extended
existing coccinelle script to fix also i2c_drivers and sometimes did not
notice that it was platform_driver.

I can split it into two different patches. Would that be ok?

Best regards,
Krzysztof

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