linux-kernel - [PATCH 3/3] clk: qcom: spmi-pmic-div: simplify locking with guard()

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Message-Id: <20240823-cleanup-h-guard-clk-qcom-v1-3-68bb9601c9dd@linaro.org>
Date: Fri, 23 Aug 2024 17:38:45 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 3/3] clk: qcom: spmi-pmic-div: simplify locking with
 guard()

Simplify error handling (less gotos) over locks with guard().

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/clk/qcom/clk-spmi-pmic-div.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/clk/qcom/clk-spmi-pmic-div.c b/drivers/clk/qcom/clk-spmi-pmic-div.c
index f394031eb0e5..41a0a4f3b4fb 100644
--- a/drivers/clk/qcom/clk-spmi-pmic-div.c
+++ b/drivers/clk/qcom/clk-spmi-pmic-div.c
@@ -3,6 +3,7 @@
  */
 
 #include <linux/bitops.h>
+#include <linux/cleanup.h>
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/delay.h>
@@ -140,30 +141,26 @@ static int clk_spmi_pmic_div_set_rate(struct clk_hw *hw, unsigned long rate,
 {
 	struct clkdiv *clkdiv = to_clkdiv(hw);
 	unsigned int div_factor = div_to_div_factor(parent_rate / rate);
-	unsigned long flags;
 	bool enabled;
 	int ret;
 
-	spin_lock_irqsave(&clkdiv->lock, flags);
+	guard(spinlock_irqsave)(&clkdiv->lock);
+
 	enabled = is_spmi_pmic_clkdiv_enabled(clkdiv);
 	if (enabled) {
 		ret = spmi_pmic_clkdiv_set_enable_state(clkdiv, false);
 		if (ret)
-			goto unlock;
+			return ret;
 	}
 
 	ret = regmap_update_bits(clkdiv->regmap, clkdiv->base + REG_DIV_CTL1,
 				 DIV_CTL1_DIV_FACTOR_MASK, div_factor);
 	if (ret)
-		goto unlock;
+		return ret;
 
 	if (enabled)
 		ret = __spmi_pmic_clkdiv_set_enable_state(clkdiv, true,
 							  div_factor);
-
-unlock:
-	spin_unlock_irqrestore(&clkdiv->lock, flags);
-
 	return ret;
 }
 

-- 
2.43.0