netdev - Re: [PATCH net-next-2.6 v3] can: mcp251x: Move to threaded interrupts instead of workqueues.

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Message-Id: <20100203.203316.174240016.davem@davemloft.net>
Date:	Wed, 03 Feb 2010 20:33:16 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	chripell@...e.org
Cc:	socketcan-core@...ts.berlios.de, netdev@...r.kernel.org
Subject: Re: [PATCH net-next-2.6 v3] can: mcp251x: Move to threaded
 interrupts instead of workqueues.

From: Christian Pellegrin <chripell@...e.org>
Date: Wed,  3 Feb 2010 18:39:54 +0100

> This patch addresses concerns about efficiency of handling incoming
> packets. Handling of interrupts is done in a threaded interrupt handler
> which has a smaller latency than workqueues. This change needed a rework
> of the locking scheme that was much simplified. Some other (more or less
> longstanding) bugs are fixed: utilization of just half of the RX
> buffers, useless wait for interrupt on open, more reliable reset
> sequence. The MERR interrupt is not used anymore: it overloads the CPU
> in error-passive state without any additional information. One shot mode
> is disabled because it's not clear if it can be handled efficiently on
> this CAN controller.
> 
> Signed-off-by: Christian Pellegrin <chripell@...e.org>

Applied.
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