Patch "i2c: testunit: don't erase registers after STOP" has been added to the 6.9-stable tree

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This is a note to let you know that I've just added the patch titled

    i2c: testunit: don't erase registers after STOP

to the 6.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     i2c-testunit-don-t-erase-registers-after-stop.patch
and it can be found in the queue-6.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit d8a3eb46e994db58f8df80438a3b9a29ee5dafd2
Author: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Date:   Thu Jun 27 13:14:47 2024 +0200

    i2c: testunit: don't erase registers after STOP
    
    [ Upstream commit c422b6a630240f706063e0ecbb894aa8491b1fa1 ]
    
    STOP fallsthrough to WRITE_REQUESTED but this became problematic when
    clearing the testunit registers was added to the latter. Actually, there
    is no reason to clear the testunit state after STOP. Doing it when a new
    WRITE_REQUESTED arrives is enough. So, no need to fallthrough, at all.
    
    Fixes: b39ab96aa894 ("i2c: testunit: add support for block process calls")
    Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
    Reviewed-by: Andi Shyti <andi.shyti@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/i2c/i2c-slave-testunit.c b/drivers/i2c/i2c-slave-testunit.c
index a49642bbae4b7..a5dcbc3c2c141 100644
--- a/drivers/i2c/i2c-slave-testunit.c
+++ b/drivers/i2c/i2c-slave-testunit.c
@@ -118,7 +118,7 @@ static int i2c_slave_testunit_slave_cb(struct i2c_client *client,
 			queue_delayed_work(system_long_wq, &tu->worker,
 					   msecs_to_jiffies(10 * tu->regs[TU_REG_DELAY]));
 		}
-		fallthrough;
+		break;
 
 	case I2C_SLAVE_WRITE_REQUESTED:
 		memset(tu->regs, 0, TU_NUM_REGS);




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