linux-kernel - Re: 2.6.29rc1 breakes usb: hiddev device no longer available

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Message-ID: <20090127195229.GA6158@vanheusden.com>
Date:	Tue, 27 Jan 2009 20:52:30 +0100
From:	Folkert van Heusden <folkert@...heusden.com>
To:	Oliver Neukum <oliver@...kum.org>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: 2.6.29rc1 breakes usb: hiddev device no longer available

> > > Since version 2.6.29rc1 querying cleware USb devices no longer works.
> > > 2.6.28 works fine. 2.6.29-rc2 also no longer works.
> > 
> 
> > the is the FAILURE situation (2.6.29-rc*):
> > open("/dev/usb/hiddev0", O_RDWR)        = 3
> > ioctl(3, HIDIOCGDEVINFO, 0xbf90c0d8)    = 0
> > ioctl(3, HIDIOCAPPLICATION, 0)          = -6291455
> > ioctl(3, HIDIOCGSTRING, 0x804e2c0)      = -1 ENODEV (No such device)
> Please try this patch.

Yes, that fixes it! Thanks!


Ack-by: folkert@...heusden.com

> --- linux-2.6/drivers/hid/usbhid/hiddev.c.alt	2009-01-26 20:03:10.000000000 +0100
> +++ linux-2.6/drivers/hid/usbhid/hiddev.c	2009-01-26 20:03:17.000000000 +0100
> @@ -656,7 +656,7 @@ static long hiddev_ioctl(struct file *fi
>  
>  	case HIDIOCGSTRING:
>  		mutex_lock(&hiddev->existancelock);
> -		if (!hiddev->exist)
> +		if (hiddev->exist)
>  			r = hiddev_ioctl_string(hiddev, cmd, user_arg);
>  		else
>  			r = -ENODEV;


Folkert van Heusden

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