From c0b86d269bf097fd100e275574ae50f1aec248ad Mon Sep 17 00:00:00 2001 From: Lixin Wang Date: Mon, 27 Nov 2017 15:06:55 +0800 Subject: [PATCH] i2c: core: decrease reference count of device node in i2c_unregister_device commit e0638fa400eaccf9fa8060f67140264c4e276552 upstream. Reference count of device node was increased in of_i2c_register_device, but without decreasing it in i2c_unregister_device. Then the added device node will never be released. Fix this by adding the of_node_put. Signed-off-by: Lixin Wang Tested-by: Wolfram Sang Signed-off-by: Wolfram Sang Cc: stable@kernel.org Signed-off-by: Sudip Mukherjee Signed-off-by: Greg Kroah-Hartman --- drivers/i2c/i2c-core-base.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 56e4658..6f2fe63 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -808,8 +808,11 @@ EXPORT_SYMBOL_GPL(i2c_new_device); */ void i2c_unregister_device(struct i2c_client *client) { - if (client->dev.of_node) + if (client->dev.of_node) { of_node_clear_flag(client->dev.of_node, OF_POPULATED); + of_node_put(client->dev.of_node); + } + if (ACPI_COMPANION(&client->dev)) acpi_device_clear_enumerated(ACPI_COMPANION(&client->dev)); device_unregister(&client->dev); -- 2.7.4