linux-kernel - Re: [PATCH] spi: remove redundant put

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Date:   Wed, 17 Jul 2019 12:11:36 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Ding Xiang <dingxiang@...s.chinamobile.com>
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi: remove redundant put_device

On Wed, Jul 17, 2019 at 06:05:44PM +0800, Ding Xiang wrote:

> device_unregister will call put_device,
> so remove the redundant put_device

>  	child = device_find_child(&ctlr->dev, NULL, match_true);
> -	if (child) {
> +	if (child)
>  		/* Remove registered slave */
>  		device_unregister(child);
> -		put_device(child);
> -	}

That's to undo the extra get we have from device_find_child(),
not to undo part of the registration.

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