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From: Alexis Berlemont <berlemont.hauw@domain.hid>
To: Daniele Nicolodi <daniele@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-core] Analogy: cancel ongoing commands when a device is closed
Date: Fri, 19 Mar 2010 01:05:35 +0100	[thread overview]
Message-ID: <4BA2BFCF.8010000@domain.hid> (raw)
In-Reply-To: <4BA259D1.4020704@domain.hid>

Daniele Nicolodi wrote:
> After fixing analogy to permit continuous acquisition, I discovered that
> ongoing commands are not canceled when a device is closed (I obtain a
> DMA buffer owerwrite warning in the kernel log when I abruptly terminate
>  my acquisition program).
> 
> I think this is quite a surprising behavior. I would expect that the
> commands are canceled when there isn't a data consumer any more. Would
> it be possible to cancel any ongoing command on device close? If there
> is agreement on this, I can look into providing a patch.
> 
The close should indeed stop any occurring acquisition. I implemented
this behaviour. It is in my git repository.

> Thanks. Cheers,

Alexis.


  reply	other threads:[~2010-03-19  0:05 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-18 16:50 [Xenomai-core] Analogy: cancel ongoing commands when a device is closed Daniele Nicolodi
2010-03-19  0:05 ` Alexis Berlemont [this message]
2010-03-29 18:40   ` Daniele Nicolodi
2010-04-05 21:54     ` Alexis Berlemont
2010-04-23 20:39       ` [Xenomai-core] Analogy: cmd_bits Stefan Schaal
2010-04-24 22:20         ` Alexis Berlemont
2010-06-24 23:04       ` [Xenomai-core] Analogy: cancel ongoing commands when a device is closed Alexis Berlemont

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