linux-kernel - RE: [E1000-devel] [PATCH] igb: Reinitialize tx/rx ring count on resume

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Date:	Fri, 7 Nov 2008 14:54:55 -0800
From:	"Duyck, Alexander H" <alexander.h.duyck@...el.com>
To:	"Darrick J. Wong" <djwong@...ibm.com>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>,
	"Ronciak, John" <john.ronciak@...el.com>
CC:	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: RE: [E1000-devel] [PATCH] igb: Reinitialize tx/rx ring count on
 resume

Darrick J. Wong wrote:
> When suspending the device, adapter->[tr]x_ring structures are freed.
> Upon resume, these two pointers are reallocated but
> adapter->[tr]x_ring->count is not set to any value.  This causes
> igb_setup_tx_resources to fail on zero-sized buffers and thus the NIC
> doesn't come back up. 

This patch is a good start, but it ends up resetting the ring sizes on a suspend/resume which we really shouldn't be doing.  I will see about pushing a patch with the ring sizes moved up into the adapter struct.  This should help to resolve the issue and maintain the ring count through suspend/resume.

Thanks,

Alex--
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