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authorJean Delvare <khali@linux-fr.org>2008-08-10 22:56:16 +0200
committerJean Delvare <khali@mahadeva.delvare>2008-08-10 22:56:16 +0200
commitc1159f9e8927f5732c19816a605926bc76c498b2 (patch)
treed74732ca258661b744787d61a5402f8c8d5d9d9c /drivers/i2c
parent8d24f8dcb7ead491704e274883b2c627062f6235 (diff)
downloadblackbird-op-linux-c1159f9e8927f5732c19816a605926bc76c498b2.tar.gz
blackbird-op-linux-c1159f9e8927f5732c19816a605926bc76c498b2.zip
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 <khali@linux-fr.org>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/i2c-core.c7
1 files changed, 6 insertions, 1 deletions
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;
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