From: David Brownell <david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
To: Byron Bradley <byron.bbradley-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org
Subject: Re: [patch 2.6.24-rc5-git] add i2c_new_dummy() utility
Date: Thu, 17 Jan 2008 14:24:30 -0800 [thread overview]
Message-ID: <200801171424.30592.david-b@pacbell.net> (raw)
In-Reply-To: <200712291905.15160.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
On Saturday 29 December 2007, David Brownell wrote:
> I still don't know why you get lockdep warnings and I don't ...
Theory: my test systems were turning lockdep off because of
a lockdep (usage) deficiency that triggers while booting:
enable_irq_wake(GPIO_irq)
holds irq_desc[GPIO_irq].lock
and calls
enable_irq_wake(parent_of(GPIO_irq))
which grabs irq_desc[parent_of(GPIO_irq))]
Lockdep falsely detects that as a potential recursion, and
then turns off all further lockdep calls.
I think a genirq patch to make set_irq_chained_handler()
put the parent into a different locking class may help
resolve that issue.
- Dave
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next prev parent reply other threads:[~2008-01-17 22:24 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20071216052308.A0FB11668D7@adsl-69-226-248-13.dsl.pltn13.pacbell.net>
[not found] ` <20071216052308.A0FB11668D7-ZcXrCSuhvln6VZ3dlLfH/g4gEjPzgfUyLrfjE7I9kuVHxeISYlDBzl6hYfS7NtTn@public.gmane.org>
2007-12-27 20:58 ` [patch 2.6.24-rc5-git] add i2c_new_dummy() utility Byron Bradley
[not found] ` <57e2b00712271258l6ea661ai2bfd6b9e099c71be-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-27 21:53 ` David Brownell
[not found] ` <200712271353.05857.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2007-12-27 22:09 ` Byron Bradley
[not found] ` <57e2b00712271409n6c98f76o45116cd92b01f396-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-27 23:06 ` David Brownell
[not found] ` <200712271506.43069.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2007-12-27 23:37 ` Byron Bradley
2007-12-27 23:59 ` David Brownell
[not found] ` <200712281230.17840.david-b@pacbell.net>
[not found] ` <57e2b00712281645y70f6ec74s57945dc53f113ec8@mail.gmail.com>
[not found] ` <57e2b00712281645y70f6ec74s57945dc53f113ec8-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-12-30 3:05 ` David Brownell
[not found] ` <200712291905.15160.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-04 22:16 ` Jean Delvare
[not found] ` <20080104231633.135f2875-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-01-04 23:48 ` David Brownell
[not found] ` <200801041548.54825.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-06 9:57 ` Jean Delvare
2008-01-06 11:23 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
[not found] ` <20080106122356.78556b8a-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-01-06 19:30 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
[not found] ` <200801061130.31774.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-08 14:18 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
[not found] ` <20080108151817.35e05c6c-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-01-08 16:20 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
[not found] ` <20080108172001.33de6afc-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-01-08 19:12 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
[not found] ` <200801081112.46972.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-08 20:50 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
[not found] ` <20080108215042.534e32fa-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-01-08 21:44 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
[not found] ` <200801081344.45544.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-08 22:04 ` i2c-remove-redundant-i2c_client-list.patch Greg KH
[not found] ` <20080108220445.GB3873-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2008-01-08 22:27 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
2008-01-09 13:29 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
[not found] ` <20080109142906.23a55f5f-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-01-09 16:19 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
[not found] ` <20080109171934.4f894bdc-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-01-09 21:21 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
[not found] ` <200801091321.29212.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-10 13:31 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
[not found] ` <20080110143105.456ddaf0-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-01-14 22:20 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
[not found] ` <200801141420.49274.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-17 22:02 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
2008-01-18 10:14 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
[not found] ` <20080118111401.7ffdccc5-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-01-18 10:30 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
2008-01-14 22:42 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
2008-01-17 19:35 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
[not found] ` <200801171135.45797.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-17 19:59 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
[not found] ` <200801171159.00291.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-18 9:32 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
[not found] ` <20080118103209.4b92ac76-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-01-18 10:16 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
[not found] ` <200801180216.22363.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-18 12:10 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
2008-01-08 18:52 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
[not found] ` <200801081052.31413.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-08 19:57 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
2008-01-09 16:09 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
2008-01-06 19:43 ` i2c-remove-redundant-i2c_client-list.patch David Brownell
[not found] ` <200801061143.34020.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-01-08 14:21 ` i2c-remove-redundant-i2c_client-list.patch Jean Delvare
2008-01-17 22:24 ` David Brownell [this message]
2007-12-22 17:31 [patch 2.6.24-rc5-git] add i2c_new_dummy() utility Jean Delvare
[not found] ` <kOXVGr9s.1198344701.9162110.khali-IO4AeUl/lkuWVfeAwA7xHQ@public.gmane.org>
2007-12-23 5:08 ` David Brownell
[not found] ` <200712222108.51292.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2007-12-23 5:11 ` David Brownell
[not found] ` <200712222111.09471.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2007-12-23 9:03 ` Jean Delvare
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