Re: [PATCH v5 1/8] i2c: core: let adapters be notified of client attach/detach

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On 08/12/2022 14:30, Andy Shevchenko wrote:
On Thu, Dec 08, 2022 at 12:39:59PM +0200, Tomi Valkeinen wrote:
From: Luca Ceresoli <luca@xxxxxxxxxxxxxxxx>

An adapter might need to know when a new device is about to be
added. This will soon bee needed to implement an "I2C address
translator" (ATR for short), a device that propagates I2C transactions
with a different slave address (an "alias" address). An ATR driver
needs to know when a slave is being added to find a suitable alias and
program the device translation map.

Add an attach/detach callback pair to allow adapter drivers to be
notified of clients being added and removed.

...

+	if (adap->attach_ops &&
+	    adap->attach_ops->attach_client &&
+	    adap->attach_ops->attach_client(adap, info, client) != 0)
+		goto out_remove_swnode;

With a temporary variable it becomes better


Ok.

 Tomi




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