From c1159f9e8927f5732c19816a605926bc76c498b2 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sun, 10 Aug 2008 22:56:16 +0200 Subject: [PATCH] i2c: Check for address business before creating clients We check for address business in i2c_probe_address(), i2c_detect_address() and i2c_new_probed_device(), but this isn't sufficient. Drivers can call i2c_attach_client() and i2c_new_device() on any address, so we must check the address there as well. This fixes bug #11239: http://bugzilla.kernel.org/show_bug.cgi?id=11239 Signed-off-by: Jean Delvare --- drivers/i2c/i2c-core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index c16dcad94412..550853f79ae8 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -813,7 +813,12 @@ static int i2c_check_addr(struct i2c_adapter *adapter, int addr) int i2c_attach_client(struct i2c_client *client) { struct i2c_adapter *adapter = client->adapter; - int res = 0; + int res; + + /* Check for address business */ + res = i2c_check_addr(adapter, client->addr); + if (res) + return res; client->dev.parent = &client->adapter->dev; client->dev.bus = &i2c_bus_type; -- 2.20.1