Re: [OOPS/HACK] atmel_cs and the latest changes in sysfs/symlink.c

[Vojtech Pavlik]

On Fri, Apr 23, 2004 at 11:03:42AM -0700, Greg KH wrote:
> On Fri, Apr 23, 2004 at 10:19:53AM -0700, Greg KH wrote:
> > On Fri, Apr 23, 2004 at 08:31:11AM -0700, Greg KH wrote:
> > > 
> > > No, we need to oops, as that's a real bug.  Can you post the whole oops
> > > that was generated with this usb problem?  I can't seem to duplicate
> > > this here.
> > 
> > Nevermind I dug up a device here that causes this problem.  I'll track
> > it down...
> 
> Ok, here's a patch that fixes it for me.  I was waiting for a good
> reason to finally get rid of this fake usb_interface structure, and now
> I have it :)
> 
> Let me know if it solves the problem for you too and then I'll send it
> off to Linus.
> 
> Any objections Vojtech?

None. :)

> 
> thanks,
> 
> greg k-h
> 
> 
> # USB: fix up fake usb_interface structure in hiddev
> #
> # This fixes a oops in the current kernel tree.
> 
> diff -Nru a/drivers/usb/input/hiddev.c b/drivers/usb/input/hiddev.c
> --- a/drivers/usb/input/hiddev.c	Fri Apr 23 11:00:23 2004
> +++ b/drivers/usb/input/hiddev.c	Fri Apr 23 11:00:23 2004
> @@ -53,7 +53,6 @@
>  	wait_queue_head_t wait;
>  	struct hid_device *hid;
>  	struct hiddev_list *list;
> -	struct usb_interface intf;
>  };
>  
>  struct hiddev_list {
> @@ -234,7 +233,7 @@
>  static struct usb_class_driver hiddev_class;
>  static void hiddev_cleanup(struct hiddev *hiddev)
>  {
> -	usb_deregister_dev(&hiddev->intf, &hiddev_class);
> +	usb_deregister_dev(hiddev->hid->intf, &hiddev_class);
>  	hiddev_table[hiddev->minor] = NULL;
>  	kfree(hiddev);
>  }
> @@ -775,7 +774,7 @@
>  		return -1;
>  	memset(hiddev, 0, sizeof(struct hiddev));
>  
> - 	retval = usb_register_dev(&hiddev->intf, &hiddev_class);
> + 	retval = usb_register_dev(hid->intf, &hiddev_class);
>  	if (retval) {
>  		err("Not able to get a minor for this device.");
>  		kfree(hiddev);
> @@ -784,13 +783,13 @@
>  
>  	init_waitqueue_head(&hiddev->wait);
>  
> - 	hiddev->minor = hiddev->intf.minor;
> - 	hiddev_table[hiddev->intf.minor - HIDDEV_MINOR_BASE] = hiddev;
> + 	hiddev->minor = hid->intf->minor;
> + 	hiddev_table[hid->intf->minor - HIDDEV_MINOR_BASE] = hiddev;
>  
>  	hiddev->hid = hid;
>  	hiddev->exist = 1;
>  
> - 	hid->minor = hiddev->intf.minor;
> + 	hid->minor = hid->intf->minor;
>  	hid->hiddev = hiddev;
>  
>  	return 0;
> 

-- 
Vojtech Pavlik
SuSE Labs, SuSE CR
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