From: Wolfram Sang <wsa@the-dreams.de>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: linux-i2c@vger.kernel.org,
"Ville Syrjälä" <ville.syrjala@linux.intel.com>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 3/3] i2c: Export i2c_init_adapter() for use by drivers in early initialisation
Date: Tue, 23 Aug 2016 23:33:09 +0200 [thread overview]
Message-ID: <20160823213308.GG20872@katana> (raw)
In-Reply-To: <1465462435-5240-3-git-send-email-chris@chris-wilson.co.uk>
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On Thu, Jun 09, 2016 at 09:53:55AM +0100, Chris Wilson wrote:
> Some drivers require use of their i2c adapter long before they can add
> the adapter to userspace (i.e. before they establish and expose their
> objects in the sysfs kobject tree). Currently i2c_add_adapter()
> registers the adapter with userspace, which causes a conflict in the
> ordering of the driver's initialisation. Exporting i2c_init_adapter()
> allows for the i2c adapter to be used early in the initialisation in
> order to detect whether the device the adapter is attached to is even
> present. The drivers still need to call i2c_add_adapter() (or
> i2c_add_number_adapter()) as per normal to complete their registration.
>
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: Wolfram Sang <wsa@the-dreams.de>
> Cc: linux-i2c@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: dri-devel@lists.freedesktop.org
Do you have a patch for some i2c driver making use of this change?
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prev parent reply other threads:[~2016-08-23 21:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-09 8:53 [PATCH 1/3] i2c: Split adapter initialisation from registers Chris Wilson
2016-06-09 8:53 ` [PATCH 2/3] i2c: Mark adapter as initialised Chris Wilson
2016-06-09 8:53 ` [PATCH 3/3] i2c: Export i2c_init_adapter() for use by drivers in early initialisation Chris Wilson
2016-08-23 21:33 ` Wolfram Sang [this message]
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