| Message ID | 20211209163720.106185-3-nikita@trvn.ru |
|---|---|
| State | New |
| Headers | show |
| Series | None | expand |
diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c index 6964cf914b60..fdfd43e2a01b 100644 --- a/drivers/clk/qcom/clk-rcg2.c +++ b/drivers/clk/qcom/clk-rcg2.c @@ -424,6 +424,10 @@ static int clk_rcg2_set_duty_cycle(struct clk_hw *hw, struct clk_duty *duty) if (d > mask) d = mask; + /* Hardware can't handle d=0, make sure it's at least 1 */ + if (!d) + d = 1; + if ((d / 2) > (n - m)) d = (n - m) * 2; else if ((d / 2) < (m / 2))
Sometimes calculation of d value may result in 0 because of the rounding after integer division. This causes the following error: [ 113.969689] camss_gp1_clk_src: rcg didn't update its configuration. [ 113.969754] WARNING: CPU: 3 PID: 35 at drivers/clk/qcom/clk-rcg2.c:122 update_config+0xc8/0xdc Make sure that D value is never zero. Fixes: 7f891faf596e ("clk: qcom: clk-rcg2: Add support for duty-cycle for RCG") Signed-off-by: Nikita Travkin <nikita@trvn.ru> --- drivers/clk/qcom/clk-rcg2.c | 4 ++++ 1 file changed, 4 insertions(+)