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path: root/drivers/i2c/i2c-mux.c
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Diffstat (limited to 'drivers/i2c/i2c-mux.c')
-rw-r--r--drivers/i2c/i2c-mux.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c
index 2d0847b6be62..593f7ca9adc7 100644
--- a/drivers/i2c/i2c-mux.c
+++ b/drivers/i2c/i2c-mux.c
@@ -110,6 +110,7 @@ struct i2c_adapter *i2c_add_mux_adapter(struct i2c_adapter *parent,
void *, u32))
{
struct i2c_mux_priv *priv;
+ char symlink_name[20];
int ret;
priv = kzalloc(sizeof(struct i2c_mux_priv), GFP_KERNEL);
@@ -183,6 +184,12 @@ struct i2c_adapter *i2c_add_mux_adapter(struct i2c_adapter *parent,
return NULL;
}
+ WARN(sysfs_create_link(&priv->adap.dev.kobj, &mux_dev->kobj, "mux_device"),
+ "can't create symlink to mux device\n");
+
+ snprintf(symlink_name, sizeof(symlink_name), "channel-%u", chan_id);
+ WARN(sysfs_create_link(&mux_dev->kobj, &priv->adap.dev.kobj, symlink_name),
+ "can't create symlink for channel %u\n", chan_id);
dev_info(&parent->dev, "Added multiplexed i2c bus %d\n",
i2c_adapter_id(&priv->adap));
@@ -193,7 +200,12 @@ EXPORT_SYMBOL_GPL(i2c_add_mux_adapter);
void i2c_del_mux_adapter(struct i2c_adapter *adap)
{
struct i2c_mux_priv *priv = adap->algo_data;
+ char symlink_name[20];
+
+ snprintf(symlink_name, sizeof(symlink_name), "channel-%u", priv->chan_id);
+ sysfs_remove_link(&adap->dev.parent->kobj, symlink_name);
+ sysfs_remove_link(&priv->adap.dev.kobj, "mux_device");
i2c_del_adapter(adap);
kfree(priv);
}