From: Wolfgang Grandegger <wg@grandegger.com>
To: Michael Pellegrini <mikep86@gmail.com>
Cc: linux-can@vger.kernel.org
Subject: Re: pch_can: Data transmission stops after dropped packet
Date: Fri, 23 Nov 2012 18:00:33 +0100 [thread overview]
Message-ID: <50AFABB1.7080507@grandegger.com> (raw)
In-Reply-To: <loom.20121123T155746-12@post.gmane.org>
On 11/23/2012 04:04 PM, Michael Pellegrini wrote:
> Wolfgang Grandegger <wg <at> grandegger.com> writes:
>
>> Did you see any other related kernel messages? For real testing you
>> should remove the debug message above. I will try to add a more
>> sophisticated trigger.
>
> I didn't see any other messages. That message prints in such a tight
> loop that it's hard to catch any other messages.
That's clear. Therefore please remove that printk for testing. For a
quick test could you please add spin_locks to c_can_do_rx_poll() similar
to c_can_do_tx(). My suspicion is that there is a race in accessing the
message ram. There is this infamous c_can_msg_obj_is_busy() in
c_can_object_get() and c_can_object_put().
Wolfgang.
next prev parent reply other threads:[~2012-11-23 17:00 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-14 15:39 pch_can: Data transmission stops after dropped packet Michael Pellegrini
2012-11-14 21:40 ` Michael Pellegrini
2012-11-15 7:18 ` Oliver Hartkopp
2012-11-15 13:13 ` Wolfgang Grandegger
2012-11-15 16:23 ` Michael Pellegrini
2012-11-15 21:19 ` Wolfgang Grandegger
2012-11-15 21:34 ` Michael Pellegrini
2012-11-15 21:51 ` Wolfgang Grandegger
2012-11-18 22:22 ` Wolfgang Grandegger
2012-11-19 15:10 ` Michael Pellegrini
2012-11-19 15:26 ` Wolfgang Grandegger
2012-11-19 16:20 ` Michael Pellegrini
2012-11-19 16:31 ` Wolfgang Grandegger
2012-11-19 17:39 ` Michael Pellegrini
2012-11-19 19:22 ` Wolfgang Grandegger
2012-11-19 20:19 ` Michael Pellegrini
2012-11-19 21:46 ` Wolfgang Grandegger
2012-11-20 14:25 ` Michael Pellegrini
2012-11-20 16:12 ` Wolfgang Grandegger
2012-11-20 19:12 ` Michael Pellegrini
2012-11-20 21:05 ` Wolfgang Grandegger
2012-11-21 10:24 ` Wolfgang Grandegger
[not found] ` <loom.20121121T160744-278@post.gmane.or g>
2012-11-21 15:15 ` Michael Pellegrini
[not found] ` <loom.20121121T160744-278@post.gmane.or g>
2012-11-21 15:25 ` Michael Pellegrini
2012-11-21 15:32 ` Marc Kleine-Budde
2012-11-21 16:11 ` Michael Pellegrini
2012-11-21 15:41 ` Michael Pellegrini
2012-11-21 15:56 ` Wolfgang Grandegger
2012-11-21 16:09 ` Michael Pellegrini
2012-11-21 16:41 ` Wolfgang Grandegger
2012-11-21 16:58 ` Casper Mogensen
2012-11-21 19:48 ` Wolfgang Grandegger
2012-11-21 17:43 ` Michael Pellegrini
2012-11-21 19:55 ` Wolfgang Grandegger
2012-11-21 21:00 ` Michael Pellegrini
2012-11-23 14:27 ` Michael Pellegrini
2012-11-23 14:45 ` Wolfgang Grandegger
2012-11-23 14:47 ` Wolfgang Grandegger
2012-11-23 15:14 ` Michael Pellegrini
2012-11-23 15:04 ` Michael Pellegrini
2012-11-23 17:00 ` Wolfgang Grandegger [this message]
2012-11-23 17:18 ` Wolfgang Grandegger
2012-11-23 17:52 ` Michael Pellegrini
2012-11-25 16:17 ` Wolfgang Grandegger
2012-11-26 14:54 ` Michael Pellegrini
2012-11-26 15:30 ` Wolfgang Grandegger
2012-11-26 17:30 ` Michael Pellegrini
2012-11-26 18:13 ` Wolfgang Grandegger
2012-11-29 12:15 ` Wolfgang Grandegger
2012-11-29 14:15 ` Michael Pellegrini
2012-12-06 14:20 ` Michael Pellegrini
2012-12-06 14:23 ` Marc Kleine-Budde
2012-12-06 14:41 ` Wolfgang Grandegger
2012-12-06 14:42 ` Marc Kleine-Budde
2012-12-06 14:42 ` Michael Pellegrini
2012-12-06 14:49 ` Wolfgang Grandegger
2012-12-06 17:05 ` Alexander Stein
2012-12-06 22:02 ` Wolfgang Grandegger
2012-12-06 23:24 ` Marc Kleine-Budde
2012-12-10 8:21 ` Alexander Stein
2012-12-11 20:24 ` Wolfgang Grandegger
2012-12-13 14:04 ` Alexander Stein
2012-12-11 14:46 ` Michael Pellegrini
2012-12-11 20:21 ` Wolfgang Grandegger
2012-12-12 13:35 ` Alexander Stein
2012-12-06 22:11 ` Michael Pellegrini
2012-12-06 23:23 ` Michael Pellegrini
2012-11-24 7:16 ` Wolfgang Grandegger
2012-11-26 3:33 ` Bhupesh SHARMA
2012-11-21 14:52 ` Michael Pellegrini
2012-11-21 15:02 ` Wolfgang Grandegger
2012-11-15 16:32 ` Casper Mogensen
2012-11-15 21:16 ` Wolfgang Grandegger
2012-11-16 19:39 ` Wolfgang Grandegger
2012-11-15 16:12 ` Michael Pellegrini
2012-11-20 18:59 ` Wolfgang Grandegger
2012-11-15 12:35 ` Steffen Rose
2012-11-15 18:26 ` Michael Pellegrini
2012-11-16 8:24 ` Steffen Rose
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