linux-kernel - [PATCH 1/2] include: mdio: Add private field to mdio structure

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Date:   Wed, 31 Jul 2019 15:06:18 +0530
From:   Harini Katakam <harini.katakam@...inx.com>
To:     andrew@...n.ch, f.fainelli@...il.com, hkallweit1@...il.com,
        davem@...emloft.net
Cc:     michal.simek@...inx.com, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        harinikatakamlinux@...il.com, harini.katakam@...inx.com,
        radhey.shyam.pandey@...inx.com
Subject: [PATCH 1/2] include: mdio: Add private field to mdio structure

Add a priv pointer to mdio structure to be used by mdio devices if
required.

This priv field will be used by gmii2rgmii driver. As this IP has
no capability to read status on the MDIO bus, the driver currently
snoops the same and needs the instance information is some private
field. Since phy device "priv" can be used by external phy drivers,
it is not appropriate. Hence this addition to mdio device. This is
a temporary solution before the IP can be improved. The need for
this priv field can be re-evaluated later based on other mdio devices.

Signed-off-by: Harini Katakam <harini.katakam@...inx.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>
---
 include/linux/mdio.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index e8242ad8..3399de7 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -40,6 +40,9 @@ struct mdio_device {
 	struct reset_control *reset_ctrl;
 	unsigned int reset_assert_delay;
 	unsigned int reset_deassert_delay;
+
+	/* private data pointer for use by MDIO devices */
+	void *priv;
 };
 #define to_mdio_device(d) container_of(d, struct mdio_device, dev)

-- 
2.7.4