linux-kernel - [PATCH 4/6] clk: socfpga: arria10: use of_clk_add_hw

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Date:   Fri,  9 Dec 2022 16:29:11 +0100
From:   Marco Pagani <marpagan@...hat.com>
To:     Dinh Nguyen <dinguyen@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     Marco Pagani <marpagan@...hat.com>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 4/6] clk: socfpga: arria10: use of_clk_add_hw_provider and improve error handling

The function of_clk_add_provider() has been deprecated, so use its
suggested replacement of_clk_add_hw_provider() instead.

Since of_clk_add_hw_provider() can fail, like of_clk_add_provider(),
check its return value and do the error handling.

The indentation of the init function parameters has been aligned
to match open parenthesis as suggested by checkpatch.

Signed-off-by: Marco Pagani <marpagan@...hat.com>
---
 drivers/clk/socfpga/clk-gate-a10.c | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/socfpga/clk-gate-a10.c b/drivers/clk/socfpga/clk-gate-a10.c
index 7cdf2f07c79b..06f129c160bc 100644
--- a/drivers/clk/socfpga/clk-gate-a10.c
+++ b/drivers/clk/socfpga/clk-gate-a10.c
@@ -40,7 +40,7 @@ static struct clk_ops gateclk_ops = {
 };
 
 static void __init __socfpga_gate_init(struct device_node *node,
-	const struct clk_ops *ops)
+				       const struct clk_ops *ops)
 {
 	u32 clk_gate[2];
 	u32 div_reg[3];
@@ -94,13 +94,25 @@ static void __init __socfpga_gate_init(struct device_node *node,
 	socfpga_clk->hw.hw.init = &init;
 	hw_clk = &socfpga_clk->hw.hw;
 
-	if (clk_hw_register(NULL, hw_clk)) {
-		kfree(socfpga_clk);
-		return;
+	rc = clk_hw_register(NULL, hw_clk);
+	if (rc) {
+		pr_err("Could not register clock:%s\n", clk_name);
+		goto err_clk_hw_register;
 	}
-	rc = of_clk_add_provider(node, of_clk_src_simple_get, hw_clk);
-	if (WARN_ON(rc))
-		return;
+
+	rc = of_clk_add_hw_provider(node, of_clk_hw_simple_get, hw_clk);
+	if (rc) {
+		pr_err("Could not register clock provider for node:%s\n",
+		       clk_name);
+		goto err_of_clk_add_hw_provider;
+	}
+
+	return;
+
+err_of_clk_add_hw_provider:
+	clk_hw_unregister(hw_clk);
+err_clk_hw_register:
+	kfree(socfpga_clk);
 }
 
 void __init socfpga_a10_gate_init(struct device_node *node)
-- 
2.38.1