clk: tegra: divider: convert from round_rate() to determine_rate()

The round_rate() clk ops is deprecated, so migrate this driver from
round_rate() to determine_rate() using the Coccinelle semantic patch
on the cover letter of this series.

Signed-off-by: Brian Masney <[e-mail]>

drivers/clk/tegra/clk-divider.c

···
 	return rate;
 }
 
-static long clk_frac_div_round_rate(struct clk_hw *hw, unsigned long rate,
-				   unsigned long *prate)
+static int clk_frac_div_determine_rate(struct clk_hw *hw,
+				       struct clk_rate_request *req)
 {
 	struct tegra_clk_frac_div *divider = to_clk_frac_div(hw);
 	int div, mul;
-	unsigned long output_rate = *prate;
+	unsigned long output_rate = req->best_parent_rate;
 
-	if (!rate)
-		return output_rate;
+	if (!req->rate) {
+		req->rate = output_rate;
 
-	div = get_div(divider, rate, output_rate);
-	if (div < 0)
-		return *prate;
+		return 0;
+	}
+
+	div = get_div(divider, req->rate, output_rate);
+	if (div < 0) {
+		req->rate = req->best_parent_rate;
+
+		return 0;
+	}
 
 	mul = get_mul(divider);
 
-	return DIV_ROUND_UP(output_rate * mul, div + mul);
+	req->rate = DIV_ROUND_UP(output_rate * mul, div + mul);
+
+	return 0;
 }
 
 static int clk_frac_div_set_rate(struct clk_hw *hw, unsigned long rate,
···
 const struct clk_ops tegra_clk_frac_div_ops = {
 	.recalc_rate = clk_frac_div_recalc_rate,
 	.set_rate = clk_frac_div_set_rate,
-	.round_rate = clk_frac_div_round_rate,
+	.determine_rate = clk_frac_div_determine_rate,
 	.restore_context = clk_divider_restore_context,
 };