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[1/7] i3c: master: Remove i3c_dev_disable_ibi_locked(olddev) on device hotjoin

Message ID 20240724-i3c_fix-v1-1-bfa500b023d6@nxp.com (mailing list archive)
State Superseded
Headers show
Series i3c: master: some fix and improvemnt for hotjoin | expand

Commit Message

Frank Li July 24, 2024, 3:45 p.m. UTC 
When a new device hotjoins, a new dynamic address is assigned.
i3c_master_add_i3c_dev_locked() identifies that the device was previously
attached to the bus and locates the olddev.

i3c_master_add_i3c_dev_locked()
{
    ...
    olddev = i3c_master_search_i3c_dev_duplicate(newdev);
    ...
    if (olddev) {
        ...
        i3c_dev_disable_ibi_locked(olddev);
        ^^^^^^
        The olddev should not receive any commands on the i3c bus as it
        does not exist and has been assigned a new address. This will
        result in NACK or timeout. So remove it.
    }
}

Fixes: 317bacf960a4 ("i3c: master: add enable(disable) hot join in sys entry")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
 drivers/i3c/master.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
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Patch

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 7028f03c2c42e..852b32178b722 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -2039,10 +2039,8 @@  int i3c_master_add_i3c_dev_locked(struct i3c_master_controller *master,
 			ibireq.max_payload_len = olddev->ibi->max_payload_len;
 			ibireq.num_slots = olddev->ibi->num_slots;
 
-			if (olddev->ibi->enabled) {
+			if (olddev->ibi->enabled)
 				enable_ibi = true;
-				i3c_dev_disable_ibi_locked(olddev);
-			}
 
 			i3c_dev_free_ibi_locked(olddev);
 		}