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Message-Id: <1261612153.2782.102.camel@achroite.uk.solarflarecom.com> Date: Wed, 23 Dec 2009 23:49:13 +0000 From: Ben Hutchings <bhutchings@...arflare.com> To: David Miller <davem@...emloft.net> Cc: netdev@...r.kernel.org, linux-net-drivers@...arflare.com Subject: [PATCH 8/8] sfc: Disable TX descriptor prefetch watchdog This hardware watchdog can misfire, so it does more harm than good. Signed-off-by: Ben Hutchings <bhutchings@...arflare.com> --- drivers/net/sfc/nic.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/net/sfc/nic.c b/drivers/net/sfc/nic.c index a577be2..db44224 100644 --- a/drivers/net/sfc/nic.c +++ b/drivers/net/sfc/nic.c @@ -1576,6 +1576,8 @@ void efx_nic_init_common(struct efx_nic *efx) EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_SOFT_EVT_EN, 1); /* Prefetch threshold 2 => fetch when descriptor cache half empty */ EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_PREF_THRESHOLD, 2); + /* Disable hardware watchdog which can misfire */ + EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_PREF_WD_TMR, 0x3fffff); /* Squash TX of packets of 16 bytes or less */ if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) EFX_SET_OWORD_FIELD(temp, FRF_BZ_TX_FLUSH_MIN_LEN_EN, 1); -- 1.5.5 -- Ben Hutchings, Senior Software Engineer, Solarflare Communications Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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