tree 11dff9f4326b300ff80cbc4f627f797a06ad8c52
parent 05745c4ab1c58fbb6ab8e8d3a40e0e395d7e2b0e
author Stephen Hemminger <shemminger@linux-foundation.org> 1190241406 -0700
committer Jeff Garzik <jeff@garzik.org> 1190316180 -0400

sky2: receive FIFO checking

A driver writer from another operating system hinted that
the versions of Yukon 2 chip with rambuffer (EC and XL) have
a hardware bug that if the FIFO ever gets completely full it
will hang. Sounds like a classic ring full vs ring empty wrap around
bug.

As a workaround, use the existing watchdog timer to check for
ring full lockup.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>