linux-kernel - Re: [PATCH beta 1] 0/3] Fix race conditions in mrf24j40 interrupts

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Date:	Tue, 21 May 2013 22:03:59 -0400
From:	Alan Ott <alan@...nal11.us>
To:	Alan Ott <alan@...nal11.us>
CC:	david@...weele.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-zigbee-devel@...ts.sourceforge.net
Subject: Re: [PATCH beta 1] 0/3] Fix race conditions in mrf24j40 interrupts

On 05/21/2013 10:01 PM, Alan Ott wrote:
> David Hauweele noticed that the mrf24j40 would hang arbitrarily after some
> period of heavy traffic.  Two race conditions were discovered, and the
> driver was changed to use threaded interrupts, since the enable/disable of
> interrupts in the driver has recently been a lighning rod whenever issues
> arise related to interrupts (costing engineering time), and since threaded
> interrupts are the right way to do it.
>
> Alan Ott (3):
>   mrf24j40: Move INIT_COMPLETION() to before packet transmission
>   mrf24j40: Use threaded IRQ handler
>   mrf24j40: Use level-triggered interrupts
>
>  drivers/net/ieee802154/mrf24j40.c | 31 +++++++++----------------------
>  1 file changed, 9 insertions(+), 22 deletions(-)

I forgot to add, I ran ping -f both ways all afternoon (6.5 hours), and
it seems solid.

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