linux-kernel - Re: [PATCH 2/3] drivers:input:ps2 Added sunxi A20 ps2 driver, changed makefile and Kconfig

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Message-ID: <63D786FF-B293-4FC1-AD71-D99515DE8E3D@gmail.com>
Date:	Fri, 05 Dec 2014 07:01:17 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Arnd Bergmann <arnd@...db.de>, linux-arm-kernel@...ts.infradead.org
CC:	vishnupatekar <vishnupatekar0510@...il.com>,
	maxime.ripard@...e-electrons.com, linux-sunxi@...glegroups.com,
	devicetree@...r.kernel.org, benh@...nel.crashing.org,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	ralf@...ux-mips.org, robh+dt@...nel.org, msalter@...hat.com,
	vishnupatekar <VishnuPatekar0510@...il.com>, jdelvare@...e.de
Subject: Re: [PATCH 2/3] drivers:input:ps2 Added sunxi A20 ps2 driver, changed makefile and Kconfig

Hi Arnd,

On December 5, 2014 2:33:11 AM PST, Arnd Bergmann <arnd@...db.de> wrote:
>On Thursday 04 December 2014 04:23:44 vishnupatekar wrote:
>> +
>> +struct sunxips2data {
>> +	int irq;
>> +	spinlock_t ps2_lock;
>> +	void __iomem *base_address;	/* virt address of control registers*/
>> +	struct serio *serio;		/* serio*/
>> +	struct device *dev;
>> +	struct	clk	*pclk;
>> +};
>
>As this is dynamically allocated, better embed the serio member
>directly to avoid allocating both separately.

That would be wrong - serio is refcounted and it may outlive instance of sunxips2data you embedded it into.


Thanks.

-- 
Dmitry
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