linux-kernel - Re: [PATCH 3/7] dmaengine: st_fdma: Add STMicroelectronics FDMA engine driver support

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Message-ID: <55E40715.1040204@st.com>
Date:	Mon, 31 Aug 2015 09:49:41 +0200
From:	Maxime Coquelin <maxime.coquelin@...com>
To:	Paul Bolle <pebolle@...cali.nl>,
	Peter Griffin <peter.griffin@...aro.org>
CC:	<lee.jones@...aro.org>, <devicetree@...r.kernel.org>,
	<dmaengine@...r.kernel.org>, <ludovic.barre@...com>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <srinivas.kandagatla@...il.com>,
	<patrice.chotard@...com>, <vinod.koul@...el.com>,
	<dan.j.williams@...el.com>
Subject: Re: [PATCH 3/7] dmaengine: st_fdma: Add STMicroelectronics FDMA
 engine driver support

Hi Paul,

On 07/09/2015 10:17 AM, Paul Bolle wrote:
>> >+static int __exit st_fdma_remove(struct platform_device *pdev)
>> >+{
>> >+	struct st_fdma_dev *fdev = platform_get_drvdata(pdev);
>> >+
>> >+	wait_for_completion(&fdev->fw_ack);
>> >+
>> >+	st_fdma_clk_disable(fdev);
>> >+
>> >+	return 0;
>> >+}
> Since this driver is built-in only this means st_fdma_remove() can never
> be used, right?
>

It's not because a driver is built-in only that it does not need a 
remove callback.
An instance can be probed/removed any time via driver's bind/unbind 
SysFS entries.
Am I missing something?

Kind regards,
Maxime
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