From e9319b0cb00d4d68792fdae37e81e316cb632cb9 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Mon, 27 Feb 2012 09:15:08 -0800 Subject: IB/core: Fix SDR rates in sysfs Commit 71eeba16 ("IB: Add new InfiniBand link speeds") introduced a bug where eg the rate for IB 4X SDR links iss displayed as "8.5 Gb/sec" instead of "10 Gb/sec" as it used to be. Fix that. Reported-by: Or Gerlitz Signed-off-by: Roland Dreier --- drivers/infiniband/core/sysfs.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) (limited to 'drivers/infiniband/core/sysfs.c') diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index c61bca30fd2d..a860b6ddbb61 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -179,33 +179,37 @@ static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, { struct ib_port_attr attr; char *speed = ""; - int rate; + int rate = -1; /* in deci-Gb/sec */ ssize_t ret; ret = ib_query_port(p->ibdev, p->port_num, &attr); if (ret) return ret; - rate = (25 * attr.active_speed) / 10; - switch (attr.active_speed) { + case 1: + /* SDR */ + rate = 25; + break; case 2: speed = " DDR"; + rate = 50; break; case 4: speed = " QDR"; + rate = 100; break; case 8: speed = " FDR10"; - rate = 10; + rate = 100; break; case 16: speed = " FDR"; - rate = 14; + rate = 140; break; case 32: speed = " EDR"; - rate = 25; + rate = 250; break; } @@ -214,7 +218,7 @@ static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused, return -EINVAL; return sprintf(buf, "%d%s Gb/sec (%dX%s)\n", - rate, (attr.active_speed == 1) ? ".5" : "", + rate / 10, rate % 10 ? ".5" : "", ib_width_enum_to_int(attr.active_width), speed); } -- cgit v1.2.3