From 2d978a953b874bac418e0b9475edd1b9125281f6 Mon Sep 17 00:00:00 2001 From: Ralph Campbell Date: Wed, 23 Jun 2010 15:58:31 +0000 Subject: [PATCH] IB/qib: Turn off IB latency mode Turn off IB latency mode. This improves link quality for slower process chips. Signed-off-by: Ralph Campbell Signed-off-by: Roland Dreier --- drivers/infiniband/hw/qib/qib_iba7322.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c index 5eedf83e2c3b..fc14ef8e5597 100644 --- a/drivers/infiniband/hw/qib/qib_iba7322.c +++ b/drivers/infiniband/hw/qib/qib_iba7322.c @@ -7271,6 +7271,8 @@ static int serdes_7322_init(struct qib_pportdata *ppd) ibsd_wr_allchans(ppd, 20, (4 << 13), BMASK(15, 13)); /* SDR */ data = qib_read_kreg_port(ppd, krp_serdesctrl); + /* Turn off IB latency mode */ + data &= ~SYM_MASK(IBSerdesCtrl_0, IB_LAT_MODE); qib_write_kreg_port(ppd, krp_serdesctrl, data | SYM_MASK(IBSerdesCtrl_0, RXLOSEN)); -- 2.39.5