clk: scmi: Fix the rounding of clock rate

This fix rounds the clock rate properly by using quotient and not
remainder in the calculation. This issue was found while testing HDMI
in the Juno platform.

Fixes: 6d6a1d82eaef7 ("clk: add support for clocks provided by SCMI")
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/clk-scmi.c b/drivers/clk/clk-scmi.c
index bb2a6f2f5516756c6050b4977964c4746901f6e4..a985bf5e1ac61e6df1a56e153ed75640e0161072 100644 (file)
--- a/drivers/clk/clk-scmi.c
+++ b/drivers/clk/clk-scmi.c
@@ -38,7 +38,6 @@ static unsigned long scmi_clk_recalc_rate(struct clk_hw *hw,
 static long scmi_clk_round_rate(struct clk_hw *hw, unsigned long rate,
                                unsigned long *parent_rate)
 {
-       int step;
        u64 fmin, fmax, ftmp;
        struct scmi_clk *clk = to_scmi_clk(hw);
 
@@ -60,9 +59,9 @@ static long scmi_clk_round_rate(struct clk_hw *hw, unsigned long rate,
 
        ftmp = rate - fmin;
        ftmp += clk->info->range.step_size - 1; /* to round up */
-       step = do_div(ftmp, clk->info->range.step_size);
+       do_div(ftmp, clk->info->range.step_size);
 
-       return step * clk->info->range.step_size + fmin;
+       return ftmp * clk->info->range.step_size + fmin;
 }
 
 static int scmi_clk_set_rate(struct clk_hw *hw, unsigned long rate,