[PATCH AUTOSEL 6.1 07/12] i2c: mux: Avoid potential false error message in i2c_mux_add_adapter

Sasha Levin
2023-10-08T00:50:49Z

From: Heiner Kallweit <hkallweit1@gmail.com>

[ Upstream commit b13e59e74ff71a1004e0508107e91e9a84fd7388 ]

I2C_CLASS_DEPRECATED is a flag and not an actual class.
There's nothing speaking against both, parent and child, having
I2C_CLASS_DEPRECATED set. Therefore exclude it from the check.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/i2c/i2c-mux.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c
index 313904be5f3bd..57ff09f18c371 100644
--- a/drivers/i2c/i2c-mux.c
+++ b/drivers/i2c/i2c-mux.c
@@ -341,7 +341,7 @@ int i2c_mux_add_adapter(struct i2c_mux_core *muxc,
priv->adap.lock_ops = &i2c_parent_lock_ops;

/* Sanity check on class */
- if (i2c_mux_parent_classes(parent) & class)
+ if (i2c_mux_parent_classes(parent) & class & ~I2C_CLASS_DEPRECATED)
dev_err(&parent->dev,
"Segment %d behind mux can't share classes with ancestors\n",
chan_id);
--
2.40.1