linux-kernel - Re: hp accelerometer: add freefall detection

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Date:	Sat, 14 Feb 2009 17:01:01 +0100
From:	Frans Pop <elendil@...net.nl>
To:	pavel@...e.cz
Cc:	Éric Piel <eric.piel@...mplin-utc.net>,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	trenn@...e.de
Subject: Re: hp accelerometer: add freefall detection

Hi Pavel,

> +++ b/drivers/hwmon/lis3lv02d.c
[...]
> +static int lis3lv02d_misc_open(struct inode *inode, struct file *file)
[...]
> +       if (ret) {
> +               clear_bit(0, &adev.misc_opened);
> +               printk(KERN_ERR DRIVER_NAME ": IRQ%d allocation failed\n", ad
> +               return -EBUSY;
> +       }
> +       lis3lv02d_increase_use(&adev);
> +       printk("lis3: registered interrupt %d\n", adev.irq);

Is this a debug printk that should be removed altogether or should it
be given a proper format and KERN_DEBUG?

> +       return 0;
> +}
[...]
> @@ -268,6 +393,19 @@ int lis3lv02d_init_device(struct acpi_lis3lv02d
> *dev) if (lis3lv02d_joystick_enable())
>                 printk(KERN_ERR DRIVER_NAME ": joystick initialization failed
>
> +       printk("lis3_init_device: irq %d\n", dev->irq);

Same here.

> +
> +       /* if we did not get an IRQ from ACPI - we have nothing more to do */
> +       if (!dev->irq) { 
> +               printk(KERN_ERR DRIVER_NAME
> +                       ": No IRQ in ACPI. Disabling /dev/freefall\n");
> +               goto out;
> +       }
> +
> +       printk("lis3: registering device\n");

And here.

> +       if (misc_register(&lis3lv02d_misc_device))
> +               printk(KERN_ERR DRIVER_NAME ": misc_register failed\n");

Cheers,
FJP
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