From: Wolfgang Grandegger <wg@grandegger.com>
To: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: linux-can@vger.kernel.org, kernel@pengutronix.de, kurt.van.dijck@eia.be
Subject: Re: [PATCH v5 1/2] can: sja1000: fix "irq X: nobody cared" problem
Date: Mon, 25 Nov 2013 08:57:17 +0100 [thread overview]
Message-ID: <808341cbce15240bc45f49ba76ae168b@grandegger.com> (raw)
In-Reply-To: <1385329501-28021-1-git-send-email-mkl@pengutronix.de>
Hi Marc,
On Sun, 24 Nov 2013 22:44:59 +0100, Marc Kleine-Budde <mkl@pengutronix.de>
wrote:
> Hello,
>
> as Kurt suggested I've split up the patch into two parts. I've
added/keept
> Wolfgang's Acks at both parts, hope that's okay. Further I've added to
the
> description of the first patch, that it fixes the "irq X: nobody cared".
Is
> this corrrect? If I understand the discussion and code correct, the
second
> patch is only relevant in the hot unplug case.
It was Austin Schuh who reported a problem with -rt, which do not show up
with
vanilla Linux. See thread with the subject "sja1000 interrupt problem".
It's
still unclear what the real cause of this problem is. Anyway, Oliver and
myself
looked into the SJA1000 code and realized some inconsistencies with the
interrupt acknowledgement via "post_irq" callback. Oliver already
clarified
that.
Wolfgang.
prev parent reply other threads:[~2013-11-25 7:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-24 21:44 [PATCH v5 1/2] can: sja1000: fix "irq X: nobody cared" problem Marc Kleine-Budde
2013-11-24 21:45 ` [PATCH v5 1/2] can: sja1000: fix pre_irq() and post_irq() handling Marc Kleine-Budde
2013-11-24 21:45 ` [PATCH v5 2/2] can: sja1000: fix return value of interrupt handler Marc Kleine-Budde
2013-11-24 22:38 ` Oliver Hartkopp
2013-11-24 22:44 ` Marc Kleine-Budde
2013-11-25 7:57 ` Wolfgang Grandegger [this message]
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