linux-kernel - Re: can: About Socket CAN with MSI issue

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Message-ID: <AANLkTi=bJTMhEo2agsMJ8fptNp7suERCGkzybb5m7ggg@mail.gmail.com>
Date:	Wed, 27 Oct 2010 17:56:11 +1000
From:	Dave Airlie <airlied@...il.com>
To:	Tomoya MORINAGA <tomoya-linux@....okisemi.com>
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	socketcan-core@...ts.berlios.de, sameo@...ux.intel.com,
	21cnbao@...il.com, chripell@...e.org, w.sang@...gutronix.de,
	wg@...ndegger.com, David Miller <davem@...emloft.net>,
	margie.foster@...el.com, kok.howg.ewe@...el.com,
	joel.clark@...el.com, andrew.chih.howe.khor@...el.com,
	yong.y.wang@...el.com, qi.wang@...el.com
Subject: Re: can: About Socket CAN with MSI issue

On Wed, Oct 27, 2010 at 2:29 PM, Tomoya MORINAGA
<tomoya-linux@....okisemi.com> wrote:
> We have faced issue when our CAN diriver whose MSI is enabled, after installing the driver,
> once remove the driver and install the driver again,
> As a result, interupt handler of the driver is not called again.
>
> Do you have any information or suggestion about the above issue?

Its a bug in the PCI layer most likely,

http://amailbox.org/mailarchive/linux-kernel/2010/10/7/4629072

Dave.
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