linux-kernel - Re: [PATCH] input: joystick: Adding Austria Microsystem AS5011 joystick driver (second version)

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Date:	Sat, 1 Jan 2011 23:58:53 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Fabien Marteau <fabien.marteau@...adeus.com>
Cc:	Scott Moreau <oreaus@...il.com>, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] input: joystick:   Adding Austria Microsystem AS5011
 joystick driver (second version)

On Thu, Dec 30, 2010 at 11:37:37AM +0100, Fabien Marteau wrote:
> +
> +	plat_dat->input_dev->name = "Austria Microsystem as5011 joystick";
> +	plat_dat->input_dev->uniq = "Austria0";

This is improper value for 'uniq' which has to be globally unique
identifier (across systems). like a serial number.

> +	plat_dat->input_dev->id.bustype = BUS_I2C;
> +	plat_dat->input_dev->phys = NULL;

No need to set this to NULL.

> +	plat_dat->input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
> +	plat_dat->input_dev->keybit[BIT_WORD(BTN_JOYSTICK)] =
> +					BIT_MASK(BTN_JOYSTICK);

__set_bit() is shorter and generally safer (no chance of writing to
wrong longword).

-- 
Dmitry
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