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| author | Steve Hodgson <shodgson@solarflare.com> | 2010-06-01 13:17:51 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-06-02 11:21:06 +0200 |
| commit | fd371e32fe53f137a0f940d61772bda92180007b (patch) | |
| tree | c2ce5d564aae698ecc643d8af42696e374a60728 /tools | |
| parent | sfc: Reschedule any resets scheduled inside efx_pm_freeze() (diff) | |
| download | linux-fd371e32fe53f137a0f940d61772bda92180007b.tar.xz linux-fd371e32fe53f137a0f940d61772bda92180007b.zip | |
sfc: Workaround flush failures on Falcon B0
Under certain conditions a PHY may backpressure Falcon B0
in such a way that flushes timeout. In normal circumstances
the phy poller would fix the PHY, and the flush could complete.
But efx_nic_flush_queues() is always called after efx_stop_all(),
so the poller has been stopped. Even if this weren't the case,
how long would we have to wait for the poller to fix this? And
several callers of efx_nic_flush_queues() are about to reset
the device anyway - so we don't need to do anything.
Work around this bug by scheduling a reset. Ensure that the
MAC is never rewired back into the datapath before the reset
runs (we already ignore all rx events anyway).
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions