linux-kernel - [PATCH 23/27] clk: zynqmp: divider: convert from divider_round_rate() to divider_determine

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Message-Id: <20260108-clk-divider-round-rate-v1-23-535a3ed73bf3@redhat.com>
Date: Thu, 08 Jan 2026 16:16:41 -0500
From: Brian Masney <bmasney@...hat.com>
To: Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>
Cc: linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Brian Masney <bmasney@...hat.com>, Michal Simek <michal.simek@....com>, 
 linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 23/27] clk: zynqmp: divider: convert from
 divider_round_rate() to divider_determine_rate()

The divider_round_rate() function is now deprecated, so let's migrate
to divider_determine_rate() instead so that this deprecated API can be
removed.

Note that when the main function itself was migrated to use
determine_rate, this was mistakenly converted to:

    req->rate = divider_round_rate(...)

This is invalid in the case when an error occurs since it can set the
rate to a negative value.

Fixes: 0f9cf96a01fd ("clk: zynqmp: divider: convert from round_rate() to determine_rate()")
Signed-off-by: Brian Masney <bmasney@...hat.com>

---
To: Michal Simek <michal.simek@....com>
Cc: linux-arm-kernel@...ts.infradead.org
---
 drivers/clk/zynqmp/divider.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/zynqmp/divider.c b/drivers/clk/zynqmp/divider.c
index c824eeacd8ebd4d670d78f1af2186e61008bdae2..de6f478d527d89881a9c0deb04e7bc0a5bf6ebba 100644
--- a/drivers/clk/zynqmp/divider.c
+++ b/drivers/clk/zynqmp/divider.c
@@ -151,8 +151,9 @@ static int zynqmp_clk_divider_determine_rate(struct clk_hw *hw,
 
 	width = fls(divider->max_div);
 
-	req->rate = divider_round_rate(hw, req->rate, &req->best_parent_rate,
-				       NULL, width, divider->flags);
+	ret = divider_determine_rate(hw, req, NULL, width, divider->flags);
+	if (ret != 0)
+		return ret;
 
 	if (divider->is_frac && (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) &&
 	    (req->rate % req->best_parent_rate))

-- 
2.52.0