IB/core: Avoid calling ib_query_device
Use the cached copy of the attributes present on the device, except for
the case of a query originating from user-space, where we have to invoke
the driver query_device entry, so they can fill in their udata.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index b1f37d4..1d5b4b0 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -614,18 +614,12 @@
struct device_attribute *dev_attr, char *buf)
{
struct ib_device *dev = container_of(device, struct ib_device, dev);
- struct ib_device_attr attr;
- ssize_t ret;
-
- ret = ib_query_device(dev, &attr);
- if (ret)
- return ret;
return sprintf(buf, "%04x:%04x:%04x:%04x\n",
- be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]),
- be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]),
- be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]),
- be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3]));
+ be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[0]),
+ be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[1]),
+ be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[2]),
+ be16_to_cpu(((__be16 *) &dev->attrs.sys_image_guid)[3]));
}
static ssize_t show_node_guid(struct device *device,