From: Florian Fainelli <f.fainelli@gmail.com>
Date: Thu, 4 Jun 2015 23:15:50 +0000 (-0700)
Subject: net: bcmgenet: improve TX timeout
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~163^2~122
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=13ea657806cf73b379a0109f7042182f47c351a7;p=pandora-kernel.git

net: bcmgenet: improve TX timeout

Dump useful ring statistics along with interrupt status, software
maintained pointers and hardware registers to help troubleshoot TX queue
stalls.

When a timeout occurs, disable TX NAPI for the rings, dump their states
while interrupts are disabled, re-enable interrupts, NAPI and queue flow
control to help with the recovery.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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