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Date: Wed, 9 Oct 2013 20:20:42 +0300 From: Claudiu Manoil <claudiu.manoil@...escale.com> To: <netdev@...r.kernel.org>, "David S. Miller" <davem@...emloft.net> CC: <linuxppc-dev@...ts.ozlabs.org> Subject: [PATCH 3/3] gianfar: Enable eTSEC-20 erratum w/a for P2020 Rev1 Enable workaround for P2020/P2010 erratum eTSEC 20, "Excess delays when transmitting TOE=1 large frames". The impact is that frames lager than 2500-bytes for which TOE (i.e. TCP/IP hw accelerations like Tx csum) is enabled may see excess delay before start of transmission. This erratum was fixed in Rev 2.0. Signed-off-by: Claudiu Manoil <claudiu.manoil@...escale.com> --- drivers/net/ethernet/freescale/gianfar.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 329a206..9fbe4dd 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -968,6 +968,9 @@ static void __gfar_detect_errata_85xx(struct gfar_private *priv) if ((SVR_SOC_VER(svr) == SVR_8548) && (SVR_REV(svr) == 0x20)) priv->errata |= GFAR_ERRATA_12; + if (((SVR_SOC_VER(svr) == SVR_P2020) && (SVR_REV(svr) < 0x20)) || + ((SVR_SOC_VER(svr) == SVR_P2010) && (SVR_REV(svr) < 0x20))) + priv->errata |= GFAR_ERRATA_76; /* aka eTSEC 20 */ } static void gfar_detect_errata(struct gfar_private *priv) -- 1.7.11.7 -- 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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