linux-kernel - [PATCH v1 1/2] pinctrl: cherryview: simplify exit path of set

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Message-Id: <20230608071903.19170-2-raag.jadav@intel.com>
Date:   Thu,  8 Jun 2023 12:49:02 +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 1/2] pinctrl: cherryview: 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/-34 (-34)
Function                                     old     new   delta
chv_pinmux_set_mux                           640     606     -34
Total: Before=19233, After=19199, chg -0.18%

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

diff --git a/drivers/pinctrl/intel/pinctrl-cherryview.c b/drivers/pinctrl/intel/pinctrl-cherryview.c
index b9b2b1d2d47f..1e21c6f8aa7f 100644
--- a/drivers/pinctrl/intel/pinctrl-cherryview.c
+++ b/drivers/pinctrl/intel/pinctrl-cherryview.c
@@ -716,18 +716,21 @@ static int chv_pinmux_set_mux(struct pinctrl_dev *pctldev,
 	struct device *dev = pctrl->dev;
 	const struct intel_pingroup *grp;
 	unsigned long flags;
-	int i;
+	int i, ret;
 
 	grp = &pctrl->soc->groups[group];
 
+	/* In case we never really enter any of the below loops */
+	ret = 0;
+
 	raw_spin_lock_irqsave(&chv_lock, flags);
 
 	/* Check first that the pad is not locked */
 	for (i = 0; i < grp->grp.npins; i++) {
 		if (chv_pad_locked(pctrl, grp->grp.pins[i])) {
-			raw_spin_unlock_irqrestore(&chv_lock, flags);
 			dev_warn(dev, "unable to set mode for locked pin %u\n", grp->grp.pins[i]);
-			return -EBUSY;
+			ret = -EBUSY;
+			goto out_unlock;
 		}
 	}
 
@@ -765,9 +768,10 @@ static int chv_pinmux_set_mux(struct pinctrl_dev *pctldev,
 			invert_oe ? "" : "not ");
 	}
 
+out_unlock:
 	raw_spin_unlock_irqrestore(&chv_lock, flags);
 
-	return 0;
+	return ret;
 }
 
 static void chv_gpio_clear_triggering(struct intel_pinctrl *pctrl,
-- 
2.17.1