IB/ipath: control receive polarity inversion

[mv-sheeva.git] / drivers / infiniband / hw / ipath / ipath_sysfs.c

diff --git a/drivers/infiniband/hw/ipath/ipath_sysfs.c b/drivers/infiniband/hw/ipath/ipath_sysfs.c
index 8476dd3c7af4448907415c2621532950859557b7..e299148c4b68ec4ae793f0805a339d3c75bbb081 100644 (file)
--- a/drivers/infiniband/hw/ipath/ipath_sysfs.c
+++ b/drivers/infiniband/hw/ipath/ipath_sysfs.c
@@ -561,6 +561,33 @@ bail:
        return ret;
 }
 
+static ssize_t store_rx_pol_inv(struct device *dev,
+                         struct device_attribute *attr,
+                         const char *buf,
+                         size_t count)
+{
+       struct ipath_devdata *dd = dev_get_drvdata(dev);
+       int ret, r;
+       u16 val;
+
+       ret = ipath_parse_ushort(buf, &val);
+       if (ret < 0)
+               goto invalid;
+
+       r = ipath_set_rx_pol_inv(dd, val);
+       if (r < 0) {
+               ret = r;
+               goto bail;
+       }
+
+       goto bail;
+invalid:
+       ipath_dev_err(dd, "attempt to set invalid Rx Polarity invert\n");
+bail:
+       return ret;
+}
+
+
 static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL);
 static DRIVER_ATTR(version, S_IRUGO, show_version, NULL);
 
@@ -587,6 +614,7 @@ static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
 static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL);
 static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
 static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL);
+static DEVICE_ATTR(rx_pol_inv, S_IWUSR, NULL, store_rx_pol_inv);
 
 static struct attribute *dev_attributes[] = {
        &dev_attr_guid.attr,
@@ -601,6 +629,7 @@ static struct attribute *dev_attributes[] = {
        &dev_attr_boardversion.attr,
        &dev_attr_unit.attr,
        &dev_attr_enabled.attr,
+       &dev_attr_rx_pol_inv.attr,
        NULL
 };