linux-kernel - [PATCH v3 2/2] clk: boston: unregister clks on failure in clk_boston

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Message-Id: <1540971702-3133-3-git-send-email-wang.yi59@zte.com.cn>
Date:   Wed, 31 Oct 2018 15:41:42 +0800
From:   Yi Wang <wang.yi59@....com.cn>
To:     paul.burton@...s.com, sboyd@...nel.org
Cc:     mturquette@...libre.com, linux-mips@...ux-mips.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        zhong.weidong@....com.cn, Yi Wang <wang.yi59@....com.cn>
Subject: [PATCH v3 2/2] clk: boston: unregister clks on failure in clk_boston_setup()

The registered clks should unregister when something wrong happens
before going out in function clk_boston_setup().

Signed-off-by: Yi Wang <wang.yi59@....com.cn>
---
 drivers/clk/imgtec/clk-boston.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/clk/imgtec/clk-boston.c b/drivers/clk/imgtec/clk-boston.c
index f5d54a6..dddda45 100644
--- a/drivers/clk/imgtec/clk-boston.c
+++ b/drivers/clk/imgtec/clk-boston.c
@@ -73,31 +73,39 @@ static void __init clk_boston_setup(struct device_node *np)
 	hw = clk_hw_register_fixed_rate(NULL, "input", NULL, 0, in_freq);
 	if (IS_ERR(hw)) {
 		pr_err("failed to register input clock: %ld\n", PTR_ERR(hw));
-		goto error;
+		goto fail_input;
 	}
 	onecell->hws[BOSTON_CLK_INPUT] = hw;
 
 	hw = clk_hw_register_fixed_rate(NULL, "sys", "input", 0, sys_freq);
 	if (IS_ERR(hw)) {
 		pr_err("failed to register sys clock: %ld\n", PTR_ERR(hw));
-		goto error;
+		goto fail_sys;
 	}
 	onecell->hws[BOSTON_CLK_SYS] = hw;
 
 	hw = clk_hw_register_fixed_rate(NULL, "cpu", "input", 0, cpu_freq);
 	if (IS_ERR(hw)) {
 		pr_err("failed to register cpu clock: %ld\n", PTR_ERR(hw));
-		goto error;
+		goto fail_cpu;
 	}
 	onecell->hws[BOSTON_CLK_CPU] = hw;
 
 	err = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, onecell);
-	if (err)
+	if (err) {
 		pr_err("failed to add DT provider: %d\n", err);
+		goto fail_clk_add;
+	}
 
 	return;
 
-error:
+fail_clk_add:
+	clk_hw_unregister_fixed_rate(onecell->hws[BOSTON_CLK_CPU]);
+fail_cpu:
+	clk_hw_unregister_fixed_rate(onecell->hws[BOSTON_CLK_SYS]);
+fail_sys:
+	clk_hw_unregister_fixed_rate(onecell->hws[BOSTON_CLK_INPUT]);
+fail_input:
 	kfree(onecell);
 }
 
-- 
1.8.3.1