linux-kernel - [PATCH v1] pinctrl: tangier: simplify locking using cleanup helpers

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Message-Id: <20231123140212.12135-1-raag.jadav@intel.com>
Date:   Thu, 23 Nov 2023 19:32:12 +0530
From:   Raag Jadav <raag.jadav@...el.com>
To:     mika.westerberg@...ux.intel.com, andriy.shevchenko@...ux.intel.com,
        linus.walleij@...aro.org
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Raag Jadav <raag.jadav@...el.com>
Subject: [PATCH v1] pinctrl: tangier: simplify locking using cleanup helpers

Use lock guards from cleanup.h to simplify locking.

Signed-off-by: Raag Jadav <raag.jadav@...el.com>
---
 drivers/pinctrl/intel/pinctrl-tangier.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/pinctrl/intel/pinctrl-tangier.c b/drivers/pinctrl/intel/pinctrl-tangier.c
index 26e34ec0a972..2cb0b4758269 100644
--- a/drivers/pinctrl/intel/pinctrl-tangier.c
+++ b/drivers/pinctrl/intel/pinctrl-tangier.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/bits.h>
+#include <linux/cleanup.h>
 #include <linux/device.h>
 #include <linux/err.h>
 #include <linux/errno.h>
@@ -220,7 +221,6 @@ static int tng_pinmux_set_mux(struct pinctrl_dev *pctldev,
 	const struct intel_pingroup *grp = &tp->groups[group];
 	u32 bits = grp->mode << BUFCFG_PINMODE_SHIFT;
 	u32 mask = BUFCFG_PINMODE_MASK;
-	unsigned long flags;
 	unsigned int i;
 
 	/*
@@ -232,11 +232,11 @@ static int tng_pinmux_set_mux(struct pinctrl_dev *pctldev,
 			return -EBUSY;
 	}
 
+	guard(raw_spinlock_irqsave)(&tp->lock);
+
 	/* Now enable the mux setting for each pin in the group */
-	raw_spin_lock_irqsave(&tp->lock, flags);
 	for (i = 0; i < grp->grp.npins; i++)
 		tng_update_bufcfg(tp, grp->grp.pins[i], bits, mask);
-	raw_spin_unlock_irqrestore(&tp->lock, flags);
 
 	return 0;
 }
@@ -248,14 +248,13 @@ static int tng_gpio_request_enable(struct pinctrl_dev *pctldev,
 	struct tng_pinctrl *tp = pinctrl_dev_get_drvdata(pctldev);
 	u32 bits = BUFCFG_PINMODE_GPIO << BUFCFG_PINMODE_SHIFT;
 	u32 mask = BUFCFG_PINMODE_MASK;
-	unsigned long flags;
 
 	if (!tng_buf_available(tp, pin))
 		return -EBUSY;
 
-	raw_spin_lock_irqsave(&tp->lock, flags);
+	guard(raw_spinlock_irqsave)(&tp->lock);
+
 	tng_update_bufcfg(tp, pin, bits, mask);
-	raw_spin_unlock_irqrestore(&tp->lock, flags);
 
 	return 0;
 }
@@ -360,7 +359,6 @@ static int tng_config_set_pin(struct tng_pinctrl *tp, unsigned int pin,
 	unsigned int param = pinconf_to_config_param(config);
 	unsigned int arg = pinconf_to_config_argument(config);
 	u32 mask, term, value = 0;
-	unsigned long flags;
 
 	switch (param) {
 	case PIN_CONFIG_BIAS_DISABLE:
@@ -432,9 +430,9 @@ static int tng_config_set_pin(struct tng_pinctrl *tp, unsigned int pin,
 		return -EINVAL;
 	}
 
-	raw_spin_lock_irqsave(&tp->lock, flags);
+	guard(raw_spinlock_irqsave)(&tp->lock);
+
 	tng_update_bufcfg(tp, pin, value, mask);
-	raw_spin_unlock_irqrestore(&tp->lock, flags);
 
 	return 0;
 }

base-commit: e58e519b80ba79cd73abb1d631d429b7322ac9cb
-- 
2.17.1