| From 2aa99676f7e41c09f492041ece441385114c46a9 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Wed, 6 Sep 2023 22:00:23 +0200 |
| Subject: i2c: riic: avoid potential division by zero |
| |
| From: Wolfram Sang <wsa+renesas@sang-engineering.com> |
| |
| [ Upstream commit 7890fce6201aed46d3576e3d641f9ee5c1f0e16f ] |
| |
| Value comes from DT, so it could be 0. Unlikely, but could be. |
| |
| Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> |
| Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> |
| Signed-off-by: Wolfram Sang <wsa@kernel.org> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| drivers/i2c/busses/i2c-riic.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c |
| index 800414886f6b5..588a3efb09c26 100644 |
| --- a/drivers/i2c/busses/i2c-riic.c |
| +++ b/drivers/i2c/busses/i2c-riic.c |
| @@ -312,7 +312,7 @@ 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++) { |
| /* |
| -- |
| 2.43.0 |
| |
