From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wolfgang Grandegger <wg@grandegger.com>
Subject: Re: pch_can: Data transmission stops after dropped packet
Date: Wed, 21 Nov 2012 17:41:15 +0100
Message-ID: <50AD042B.3020305@grandegger.com>
References: <loom.20121114T160521-534@post.gmane.org> <50A4972A.9070707@hartkopp.net> <50A4EA87.9020206@grandegger.com> <loom.20121115T171319-854@post.gmane.org> <50A55C65.2020003@grandegger.com> <loom.20121115T222748-977@post.gmane.org> <50A95FC1.3050907@grandegger.com> <loom.20121119T155735-163@post.gmane.org> <50AA4FB3.7070009@grandegger.com> <loom.20121119T171647-35@post.gmane.org> <50AA5EE6.6060105@grandegger.com> <loom.20121119T183819-427@post.gmane.org> <50AA86DB.7000506@grandegger.com> <loom.20121119T211403-520@post.gmane.org> <50AAA8C8.2080504@grandegger.com> <loom.20121120T151831-134@post.gmane.org> <50ABABDE.8060503@grandegger.com> <loom.20121120T192159-770@post.gmane.org> <50ABF09C.8040303@grandegger.com> <50ACABE2.2020306@grandegger.com> <loom.20121121T160744-278@post.gmane.or
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To: Michael Pellegrini <mikep86@gmail.com>
Cc: linux-can@vger.kernel.org

On 11/21/2012 05:09 PM, Michael Pellegrini wrote:
> Wolfgang Grandegger <wg <at> grandegger.com> writes:
> 
>> OK, at least we have reached the level of the PHC_CAN driver. The driver
>> does print some debug messages. Could you show them?
> 
> Do you mean the dmesg output?  Dmesg output during the transmission problem is
> an uninterrupted stream of "c_can_isr: irqstatus=0xXX", where XX is constant.
> So far, I have seen the values 0x17, 0x19, and 0x1e in the three times I have
> hit the transmission problem.

Could you show the sequence? I need to lookup the meaning of the bits.

Wolfgang.