All of lore.kernel.org
 help / color / mirror / Atom feed
From: Baruch Siach <baruch@tkos.co.il>
To: Javier Martinez Canillas <javier@osg.samsung.com>
Cc: linux-kernel@vger.kernel.org, Wolfram Sang <wsa@the-dreams.de>,
	linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org
Subject: Re: [PATCH 4/4] i2c: digicolor: Fix module autoload
Date: Wed, 19 Oct 2016 08:05:28 +0300	[thread overview]
Message-ID: <20161019050528.ahtibbag7n6gksic@tarshish> (raw)
In-Reply-To: <1476824508-4679-5-git-send-email-javier@osg.samsung.com>

Hi Javier Martinez Canillas,

On Tue, Oct 18, 2016 at 06:01:48PM -0300, Javier Martinez Canillas wrote:
> If the driver is built as a module, autoload won't work because the module
> alias information is not filled. So user-space can't match the registered
> device with the corresponding module.
> 
> Export the module alias information using the MODULE_DEVICE_TABLE() macro.
> 
> Before this patch:
> 
> $ modinfo drivers/i2c/busses/i2c-digicolor.ko | grep alias
> $
> 
> After this patch:
> 
> $ modinfo drivers/i2c/busses/i2c-digicolor.ko | grep alias
> alias:          of:N*T*Ccnxt,cx92755-i2cC*
> alias:          of:N*T*Ccnxt,cx92755-i2c
> 
> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>

Acked-by: Baruch Siach <baruch@tkos.co.il>

Thanks,
baruch

>  drivers/i2c/busses/i2c-digicolor.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/i2c/busses/i2c-digicolor.c b/drivers/i2c/busses/i2c-digicolor.c
> index 9604024e0eb0..49f2084f7bb5 100644
> --- a/drivers/i2c/busses/i2c-digicolor.c
> +++ b/drivers/i2c/busses/i2c-digicolor.c
> @@ -368,6 +368,7 @@ static const struct of_device_id dc_i2c_match[] = {
>  	{ .compatible = "cnxt,cx92755-i2c" },
>  	{ },
>  };
> +MODULE_DEVICE_TABLE(of, dc_i2c_match);
>  
>  static struct platform_driver dc_i2c_driver = {
>  	.probe   = dc_i2c_probe,

-- 
     http://baruch.siach.name/blog/                  ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch@tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -

WARNING: multiple messages have this Message-ID (diff)
From: baruch@tkos.co.il (Baruch Siach)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] i2c: digicolor: Fix module autoload
Date: Wed, 19 Oct 2016 08:05:28 +0300	[thread overview]
Message-ID: <20161019050528.ahtibbag7n6gksic@tarshish> (raw)
In-Reply-To: <1476824508-4679-5-git-send-email-javier@osg.samsung.com>

Hi Javier Martinez Canillas,

On Tue, Oct 18, 2016 at 06:01:48PM -0300, Javier Martinez Canillas wrote:
> If the driver is built as a module, autoload won't work because the module
> alias information is not filled. So user-space can't match the registered
> device with the corresponding module.
> 
> Export the module alias information using the MODULE_DEVICE_TABLE() macro.
> 
> Before this patch:
> 
> $ modinfo drivers/i2c/busses/i2c-digicolor.ko | grep alias
> $
> 
> After this patch:
> 
> $ modinfo drivers/i2c/busses/i2c-digicolor.ko | grep alias
> alias:          of:N*T*Ccnxt,cx92755-i2cC*
> alias:          of:N*T*Ccnxt,cx92755-i2c
> 
> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>

Acked-by: Baruch Siach <baruch@tkos.co.il>

Thanks,
baruch

>  drivers/i2c/busses/i2c-digicolor.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/i2c/busses/i2c-digicolor.c b/drivers/i2c/busses/i2c-digicolor.c
> index 9604024e0eb0..49f2084f7bb5 100644
> --- a/drivers/i2c/busses/i2c-digicolor.c
> +++ b/drivers/i2c/busses/i2c-digicolor.c
> @@ -368,6 +368,7 @@ static const struct of_device_id dc_i2c_match[] = {
>  	{ .compatible = "cnxt,cx92755-i2c" },
>  	{ },
>  };
> +MODULE_DEVICE_TABLE(of, dc_i2c_match);
>  
>  static struct platform_driver dc_i2c_driver = {
>  	.probe   = dc_i2c_probe,

-- 
     http://baruch.siach.name/blog/                  ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch at tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -

  reply	other threads:[~2016-10-19  5:05 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-18 21:01 [PATCH 0/4] i2c: Fix module autoload for some i2c busses platform drivers Javier Martinez Canillas
2016-10-18 21:01 ` Javier Martinez Canillas
2016-10-18 21:01 ` [PATCH 1/4] i2c: jz4780: Fix module autoload Javier Martinez Canillas
2016-10-18 21:01 ` [PATCH 2/4] i2c: xlp9xx: " Javier Martinez Canillas
2016-10-18 21:01 ` [PATCH 3/4] i2c: xlr: Fix module autoload for OF registration Javier Martinez Canillas
2016-10-18 21:01 ` [PATCH 4/4] i2c: digicolor: Fix module autoload Javier Martinez Canillas
2016-10-18 21:01   ` Javier Martinez Canillas
2016-10-19  5:05   ` Baruch Siach [this message]
2016-10-19  5:05     ` Baruch Siach
2016-10-25  9:32 ` [PATCH 0/4] i2c: Fix module autoload for some i2c busses platform drivers Wolfram Sang
2016-10-25  9:32   ` Wolfram Sang

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20161019050528.ahtibbag7n6gksic@tarshish \
    --to=baruch@tkos.co.il \
    --cc=javier@osg.samsung.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-i2c@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=wsa@the-dreams.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.