[PATCH] B43: Handle DMA RX descriptor underrun

Michael Büsch m at bues.ch
Thu May 2 09:06:03 EDT 2013


On Tue, 23 Apr 2013 21:45:11 +0200 (CEST)
Thommy Jakobsson <thommyj at gmail.com> wrote:

> From: Thommy Jakobsson <thommyj at gmail.com>
> 
> Add handling of rx descriptor underflow. This fixes a fault that could
> happen on slow machines, where data is received faster than the CPU can
> handle. In such a case the device will use up all rx descriptors and
> refuse to send any more data before confirming that it is ok. This
> patch enables necessary interrupt to discover such a situation and will
> handle them by dropping everything in the ring buffer.
> 
> Reviewed-by: Michael Buesch <m at bues.ch>
> Signed-off-by: Thommy Jakobsson <thommyj at gmail.com>
> Cc: stable <stable at vger.kernel.org>

Anybody interested in porting this to b43legacy (and testing)?

-- 
Michael
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