linux-kernel - Re: [1/2] 2.6.22-rc7: known regressions

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Date:	Sat, 7 Jul 2007 03:05:03 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Dmitry Torokhov <dtor@...ightbb.com>
Cc:	Marcel Holtmann <marcel@...tmann.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg KH <greg@...ah.com>
Subject: Re: [1/2] 2.6.22-rc7: known regressions

On Fri, 6 Jul 2007, Dmitry Torokhov wrote:

> This is for devices using boot protocol, not full HID as far as I 
> understand.

David,

could you please try with the trivial patch below and report the output? 
I'd be interested to know whether we are by any chance really seeing 
double input_unregister_device() for the same input_dev somehow. Thanks.

diff --git a/drivers/input/input.c b/drivers/input/input.c
index ccd8aba..ed5adb4 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1160,6 +1160,9 @@ void input_unregister_device(struct input_dev *dev)
 	struct input_handle *handle, *next;
 	int code;
 
+	printk(KERN_DEBUG "input_unregister_device for %p\n", dev);
+	dump_stack();
+
 	for (code = 0; code <= KEY_MAX; code++)
 		if (test_bit(code, dev->key))
 			input_report_key(dev, code, 0);
-
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