[PATCH V4 03/14] i3c: master: Do not treat master device as a duplicate target

[Adrian Hunter]

i3c_master_search_i3c_dev_duplicate() searches the bus for another I3C
device with the same PID as the reference device.  The search can match
master->this, causing the controller itself to be returned as a
duplicate.

Since the controller is not a target device, it cannot be a duplicate of
one.  Exclude master->this from matching so that the function only
returns real duplicate target devices.

Fixes: 3a379bbcea0a ("i3c: Add core I3C infrastructure")
Cc: stable at vger.kernel.org
Signed-off-by: Adrian Hunter <adrian.hunter at intel.com>
Reviewed-by: Frank Li <Frank.Li at nxp.com>
Acked-by: Mukesh Savaliya <mukesh.savaliya at oss.qualcomm.com>
---


Changes in V4:

	Added Frank's Rev-by and Mukesh's Acked-by tags

Changes in V3:

	New patch


 drivers/i3c/master.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index c7bb52b71d88..abb582645a2e 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -2545,7 +2545,8 @@ i3c_master_search_i3c_dev_duplicate(struct i3c_dev_desc *refdev)
 
 	i3c_bus_for_each_i3cdev(&master->bus, i3cdev) {
 		if (i3cdev != refdev && i3cdev->info.pid &&
-		    i3cdev->info.pid == refdev->info.pid)
+		    i3cdev->info.pid == refdev->info.pid &&
+		    i3cdev != master->this)
 			return i3cdev;
 	}
 
-- 
2.53.0