wireless: Print wiphy name in sysfs.

The index cannot be used to reliably reconstruct a phy
name, so explicitly add the phy name to sysfs so that scripts
can figure out the parent phy device for a particular
wireless interface.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c
index 74a9e3cce45..4294fa22bb2 100644
--- a/net/wireless/sysfs.c
+++ b/net/wireless/sysfs.c
@@ -35,6 +35,14 @@ SHOW_FMT(index, "%d", wiphy_idx);
 SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
 SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);
 
+static ssize_t name_show(struct device *dev,
+                         struct device_attribute *attr,
+                         char *buf) {
+        struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
+        return sprintf(buf, "%s\n", dev_name(&wiphy->dev));
+}
+
+
 static ssize_t addresses_show(struct device *dev,
                               struct device_attribute *attr,
                               char *buf)
@@ -57,6 +65,7 @@ static struct device_attribute ieee80211_dev_attrs[] = {
         __ATTR_RO(macaddress),
         __ATTR_RO(address_mask),
         __ATTR_RO(addresses),
+        __ATTR_RO(name),
         {}
 };