diff options
| author | Steve Hodgson <shodgson@solarflare.com> | 2010-06-01 11:17:51 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-06-02 02:21:06 -0700 |
| commit | fd371e32fe53f137a0f940d61772bda92180007b (patch) | |
| tree | c2ce5d564aae698ecc643d8af42696e374a60728 /drivers/net/sfc/workarounds.h | |
| parent | 319ba649af30321ea221740833785b46e1fe6af3 (diff) | |
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 'drivers/net/sfc/workarounds.h')
| -rw-r--r-- | drivers/net/sfc/workarounds.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/sfc/workarounds.h b/drivers/net/sfc/workarounds.h index 518f7fc9147..782e45a613d 100644 --- a/drivers/net/sfc/workarounds.h +++ b/drivers/net/sfc/workarounds.h @@ -54,7 +54,7 @@ /* Increase filter depth to avoid RX_RESET */ #define EFX_WORKAROUND_7244 EFX_WORKAROUND_FALCON_A /* Flushes may never complete */ -#define EFX_WORKAROUND_7803 EFX_WORKAROUND_FALCON_A +#define EFX_WORKAROUND_7803 EFX_WORKAROUND_FALCON_AB /* Leak overlength packets rather than free */ #define EFX_WORKAROUND_8071 EFX_WORKAROUND_FALCON_A |