linux-kernel - Re: [PATCH] Apple SMC driver (hardware monitoring and control)

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Date:	Thu, 22 Mar 2007 11:37:34 -0400
From:	Dmitry Torokhov <dtor@...ightbb.com>
To:	Nicolas Boichat <nicolas@...chat.ch>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, lm-sensors@...sensors.org,
	rlove@...ve.org, linux-kernel@...smi.ch
Subject: Re: [PATCH] Apple SMC driver (hardware monitoring and control)

Hi Nicolas,

On Monday 19 March 2007 01:19, Nicolas Boichat wrote:
> +       /* initialize the input class */
> +       applesmc_idev->name = "applesmc";

You may want to set applesmc_idev->id.bus = BUS_HOST;

> +       applesmc_idev->cdev.dev = &pdev->dev;
> +       applesmc_idev->evbit[0] = BIT(EV_ABS);
> +       input_set_abs_params(applesmc_idev, ABS_X,
> +                       -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
> +       input_set_abs_params(applesmc_idev, ABS_Y,
> +                       -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
> +
> +       input_register_device(applesmc_idev);

Please add error hanling here.

> +
> +       /* start up our timer for the input device */
> +       init_timer(&applesmc_timer);
> +       applesmc_timer.function = applesmc_mousedev_poll;
> +       applesmc_timer.expires = jiffies + APPLESMC_POLL_PERIOD;
> +       add_timer(&applesmc_timer);
> 

Please consider implemention open and close methods for the input
device and start/stop timer from there - there is no point of checking
hardware state if noone is listening to events. 

-- 
Dmitry
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