[PATCH 2/2] i2c: mux: demux-pinctrl: add symlinks to the demux device in sysfs

[Wolfram Sang]

Similar to mux devices, create special symlinks to connect the demuxed
bus with the demux device.

Signed-off-by: Wolfram Sang <wsa+rene...@sang-engineering.com>
---
 drivers/i2c/muxes/i2c-demux-pinctrl.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/i2c/muxes/i2c-demux-pinctrl.c 
b/drivers/i2c/muxes/i2c-demux-pinctrl.c
index 035032e20327..d5e7d4aa6ee1 100644
--- a/drivers/i2c/muxes/i2c-demux-pinctrl.c
+++ b/drivers/i2c/muxes/i2c-demux-pinctrl.c
@@ -116,6 +116,11 @@ static int i2c_demux_activate_master(struct 
i2c_demux_pinctrl_priv *priv, u32 ne
        if (ret < 0)
                goto err_with_put;
 
+       sysfs_create_link(&priv->cur_adap.dev.kobj, &priv->dev->kobj,
+                              "demux_device");
+       sysfs_create_link(&priv->dev->kobj, &priv->cur_adap.dev.kobj,
+                              "channel-0");
+
        return 0;
 
  err_with_put:
@@ -135,6 +140,9 @@ static int i2c_demux_deactivate_master(struct 
i2c_demux_pinctrl_priv *priv)
        if (cur < 0)
                return 0;
 
+       sysfs_remove_link(&priv->dev->kobj, "channel-0");
+       sysfs_remove_link(&priv->cur_adap.dev.kobj, "demux_device");
+
        i2c_del_adapter(&priv->cur_adap);
        i2c_put_adapter(priv->chan[cur].parent_adap);
 
-- 
2.11.0