linux-kernel - [PATCH v1 3/4] pinctrl: intel: simplify exit path of set

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Date:   Thu,  8 Jun 2023 12:30:16 +0530
From:   Raag Jadav <raag.jadav@...el.com>
To:     linus.walleij@...aro.org, mika.westerberg@...ux.intel.com,
        andriy.shevchenko@...ux.intel.com
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        mallikarjunappa.sangannavar@...el.com, pandith.n@...el.com,
        Raag Jadav <raag.jadav@...el.com>
Subject: [PATCH v1 3/4] pinctrl: intel: simplify exit path of set_mux hook

Simplify exit path of ->set_mux() hook and save a few bytes.

add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-22 (-22)
Function                                     old     new   delta
intel_pinmux_set_mux                         242     220     -22
Total: Before=10453, After=10431, chg -0.21%

Signed-off-by: Raag Jadav <raag.jadav@...el.com>
---
 drivers/pinctrl/intel/pinctrl-intel.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index 3f78066b1837..1b5745202058 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -393,7 +393,10 @@ static int intel_pinmux_set_mux(struct pinctrl_dev *pctldev,
 	struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
 	const struct intel_pingroup *grp = &pctrl->soc->groups[group];
 	unsigned long flags;
-	int i;
+	int i, ret;
+
+	/* In case we never really enter any of the below loops */
+	ret = 0;
 
 	raw_spin_lock_irqsave(&pctrl->lock, flags);
 
@@ -403,8 +406,8 @@ static int intel_pinmux_set_mux(struct pinctrl_dev *pctldev,
 	 */
 	for (i = 0; i < grp->grp.npins; i++) {
 		if (!intel_pad_usable(pctrl, grp->grp.pins[i])) {
-			raw_spin_unlock_irqrestore(&pctrl->lock, flags);
-			return -EBUSY;
+			ret = -EBUSY;
+			goto out_unlock;
 		}
 	}
 
@@ -427,9 +430,10 @@ static int intel_pinmux_set_mux(struct pinctrl_dev *pctldev,
 		writel(value, padcfg0);
 	}
 
+out_unlock:
 	raw_spin_unlock_irqrestore(&pctrl->lock, flags);
 
-	return 0;
+	return ret;
 }
 
 static void __intel_gpio_set_direction(void __iomem *padcfg0, bool input)
-- 
2.17.1