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i3c: master: Do not treat master device as a duplicate target

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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: 3a379bbcea ("i3c: Add core I3C infrastructure")
Cc: stable@vger.kernel.org
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Mukesh Savaliya <mukesh.savaliya@oss.qualcomm.com>
Link: https://patch.msgid.link/20260807145638.168865-4-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Adrian Hunter 2026-08-07 17:56:27 +03:00 committed by Alexandre Belloni
parent 8bed7f4fa7
commit 4dc1b3eeba
1 changed files with 2 additions and 1 deletions
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3
drivers/i3c/master.c
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@ -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;
}