From: Michael Chan <mchan@broadcom.com>
Date: Sun, 29 Jul 2012 19:15:43 +0000 (+0000)
Subject: tg3: Add New 5719 Read DMA workaround
X-Git-Tag: v3.6-rc1~30^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=091f0ea30074bc43f9250961b3247af713024bc6;p=pandora-kernel.git

tg3: Add New 5719 Read DMA workaround

After Power-on-reset, the 5719's TX DMA length registers may contain
uninitialized values and cause TX DMA to stall.  Check for invalid
values and set a register bit to flush the TX channels.  The bit
needs to be turned off after the DMA channels have been flushed.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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