bus_lock for both the virtual adapter and its parent have the same lock
class. Since both are taken in i2c_virt_master_xfer() and
i2c_virt_smbus_xfer(), lockdep needs an annotation that the nesting is
safe.
Signed-off-by: David Rientjes <[EMAIL PROTECTED]>
---
drivers/i2c/i2c-virt.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/i2c-virt.c b/drivers/i2c/i2c-virt.c
--- a/drivers/i2c/i2c-virt.c
+++ b/drivers/i2c/i2c-virt.c
@@ -53,7 +53,7 @@ static int i2c_virt_master_xfer(struct i2c_adapter *adap,
* the transfer.
*/
- mutex_lock(&parent->bus_lock);
+ mutex_lock_nested(&parent->bus_lock, SINGLE_DEPTH_NESTING);
ret = priv->select(parent, priv->client, priv->id);
if (ret >= 0)
@@ -79,7 +79,7 @@ static int i2c_virt_smbus_xfer(struct i2c_adapter *adap,
* the transfer.
*/
- mutex_lock(&parent->bus_lock);
+ mutex_lock_nested(&parent->bus_lock, SINGLE_DEPTH_NESTING);
ret = priv->select(parent, priv->client, priv->id);
if (ret == 0)
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