Patch "i2c: riic: avoid potential division by zero" has been added to the 6.1-stable tree

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

    i2c: riic: avoid potential division by zero

to the 6.1-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-riic-avoid-potential-division-by-zero.patch
and it can be found in the queue-6.1 subdirectory.

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



commit e441dbb0d371467420ade62d06e6f9b0d2a0e9a8
Author: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Date:   Wed Sep 6 22:00:23 2023 +0200

    i2c: riic: avoid potential division by zero
    
    [ Upstream commit 7890fce6201aed46d3576e3d641f9ee5c1f0e16f ]
    
    Value comes from DT, so it could be 0. Unlikely, but could be.
    
    Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
    Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
    Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c
index 849848ccb0802..b9959621cc5d7 100644
--- a/drivers/i2c/busses/i2c-riic.c
+++ b/drivers/i2c/busses/i2c-riic.c
@@ -314,7 +314,7 @@ static int riic_init_hw(struct riic_dev *riic, struct i2c_timings *t)
 	 * frequency with only 62 clock ticks max (31 high, 31 low).
 	 * Aim for a duty of 60% LOW, 40% HIGH.
 	 */
-	total_ticks = DIV_ROUND_UP(rate, t->bus_freq_hz);
+	total_ticks = DIV_ROUND_UP(rate, t->bus_freq_hz ?: 1);
 
 	for (cks = 0; cks < 7; cks++) {
 		/*




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