Merge branch 'Clause-45-PHY-probing-improvements'

Russell King says:

====================
Clause 45 PHY probing improvements

Last time this series was posted back in May, Florian reviewed the
patches, which was the only feedback I received.  I'm now posting
them without the RFC tag.

This series aims to improve the probing for Clause 45 PHYs.

The first four patches clean up get_phy_device() and called functions,
updating the kernel doc, adding information about the various error
return values.

We then provide better kerneldoc for get_phy_device(), describing what
is going on, and more importantly what the various return codes mean.

Patch 6 adds support for probing MMDs >= 8 to check for their presence.

Patch 7 changes get_phy_c45_ids() to only set the returned
devices_in_package if we successfully find a PHY.

Patch 8 splits the use of "devices in package" from the "mmds present".

Patch 9 expands our ID reading to cover the other MMDs.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 2 deletions

diff --git a/include/linux/phy.h b/include/linux/phy.h
index 8c05d0fb5c00..9248dd2ce4ca 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -388,14 +388,18 @@ enum phy_state {
 	PHY_CABLETEST,
 };
 
+#define MDIO_MMD_NUM 32
+
 /**
  * struct phy_c45_device_ids - 802.3-c45 Device Identifiers
- * @devices_in_package: Bit vector of devices present.
+ * @devices_in_package: IEEE 802.3 devices in package register value.
+ * @mmds_present: bit vector of MMDs present.
  * @device_ids: The device identifer for each present device.
  */
 struct phy_c45_device_ids {
 	u32 devices_in_package;
-	u32 device_ids[8];
+	u32 mmds_present;
+	u32 device_ids[MDIO_MMD_NUM];
 };
 
 struct macsec_context;