From: Claudiu Manoil Date: Wed, 9 Oct 2013 17:20:42 +0000 (+0300) Subject: gianfar: Enable eTSEC-20 erratum w/a for P2020 Rev1 X-Git-Tag: v5.15~19121^2~45^2 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=53fad77375ce1005cb62105bf63265966a28bca3;p=mirror_ubuntu-kernels.git 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 Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 329a20626721..9fbe4dda7a0e 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)