gpio fixes for v6.2-rc3

- fix a reference leak in gpio-sifive
 - fix a potential use of an uninitialized variable in core gpiolib
 - fix a potential use of an uninitialized variable in gpio-pca953x
 - make GPIO irqchips immutable in gpio-pmic-eic-sprd, gpio-eic-sprd and
   gpio-sprd
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Merge tag 'gpio-fixes-for-v6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:
 "A reference leak fix, two fixes for using uninitialized variables and
  more drivers converted to using immutable irqchips:

   - fix a reference leak in gpio-sifive

   - fix a potential use of an uninitialized variable in core gpiolib

   - fix a potential use of an uninitialized variable in gpio-pca953x

   - make GPIO irqchips immutable in gpio-pmic-eic-sprd, gpio-eic-sprd
     and gpio-sprd"

* tag 'gpio-fixes-for-v6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: sifive: Fix refcount leak in sifive_gpio_probe
  gpio: sprd: Make the irqchip immutable
  gpio: pmic-eic-sprd: Make the irqchip immutable
  gpio: eic-sprd: Make the irqchip immutable
  gpio: pca953x: avoid to use uninitialized value pinctrl
  gpiolib: Fix using uninitialized lookup-flags on ACPI platforms

drivers/gpio/gpio-eic-sprd.c

@@ -91,7 +91,6 @@ enum sprd_eic_type {
 
 struct sprd_eic {
 	struct gpio_chip chip;
-	struct irq_chip intc;
 	void __iomem *base[SPRD_EIC_MAX_BANK];
 	enum sprd_eic_type type;
 	spinlock_t lock;
@@ -255,6 +254,8 @@ static void sprd_eic_irq_mask(struct irq_data *data)
 	default:
 		dev_err(chip->parent, "Unsupported EIC type.\n");
 	}
+
+	gpiochip_disable_irq(chip, offset);
 }
 
 static void sprd_eic_irq_unmask(struct irq_data *data)
@@ -263,6 +264,8 @@ static void sprd_eic_irq_unmask(struct irq_data *data)
 	struct sprd_eic *sprd_eic = gpiochip_get_data(chip);
 	u32 offset = irqd_to_hwirq(data);
 
+	gpiochip_enable_irq(chip, offset);
+
 	switch (sprd_eic->type) {
 	case SPRD_EIC_DEBOUNCE:
 		sprd_eic_update(chip, offset, SPRD_EIC_DBNC_IE, 1);
@@ -564,6 +567,15 @@ static void sprd_eic_irq_handler(struct irq_desc *desc)
 	chained_irq_exit(ic, desc);
 }
 
+static const struct irq_chip sprd_eic_irq = {
+	.name		= "sprd-eic",
+	.irq_ack	= sprd_eic_irq_ack,
+	.irq_mask	= sprd_eic_irq_mask,
+	.irq_unmask	= sprd_eic_irq_unmask,
+	.irq_set_type	= sprd_eic_irq_set_type,
+	.flags		= IRQCHIP_SKIP_SET_WAKE | IRQCHIP_IMMUTABLE,
+	GPIOCHIP_IRQ_RESOURCE_HELPERS,
+};
 static int sprd_eic_probe(struct platform_device *pdev)
 {
 	const struct sprd_eic_variant_data *pdata;
@@ -626,15 +638,8 @@ static int sprd_eic_probe(struct platform_device *pdev)
 		break;
 	}
 
-	sprd_eic->intc.name = dev_name(&pdev->dev);
-	sprd_eic->intc.irq_ack = sprd_eic_irq_ack;
-	sprd_eic->intc.irq_mask = sprd_eic_irq_mask;
-	sprd_eic->intc.irq_unmask = sprd_eic_irq_unmask;
-	sprd_eic->intc.irq_set_type = sprd_eic_irq_set_type;
-	sprd_eic->intc.flags = IRQCHIP_SKIP_SET_WAKE;
-
 	irq = &sprd_eic->chip.irq;
-	irq->chip = &sprd_eic->intc;
+	gpio_irq_chip_set_chip(irq, &sprd_eic_irq);
 	irq->handler = handle_bad_irq;
 	irq->default_type = IRQ_TYPE_NONE;
 	irq->parent_handler = sprd_eic_irq_handler;

drivers/gpio/gpio-pca953x.c

@@ -474,6 +474,9 @@ static u8 pcal6534_recalc_addr(struct pca953x_chip *chip, int reg, int off)
 	case PCAL6524_DEBOUNCE:
 		pinctrl = ((reg & PCAL_PINCTRL_MASK) >> 1) + 0x1c;
 		break;
+	default:
+		pinctrl = 0;
+		break;
 	}
 
 	return pinctrl + addr + (off / BANK_SZ);

drivers/gpio/gpio-pmic-eic-sprd.c

@@ -47,7 +47,6 @@ enum {
 /**
  * struct sprd_pmic_eic - PMIC EIC controller
  * @chip: the gpio_chip structure.
- * @intc: the irq_chip structure.
  * @map:  the regmap from the parent device.
  * @offset: the EIC controller's offset address of the PMIC.
  * @reg: the array to cache the EIC registers.
@@ -56,7 +55,6 @@ enum {
  */
 struct sprd_pmic_eic {
 	struct gpio_chip chip;
-	struct irq_chip intc;
 	struct regmap *map;
 	u32 offset;
 	u8 reg[CACHE_NR_REGS];
@@ -151,15 +149,21 @@ static void sprd_pmic_eic_irq_mask(struct irq_data *data)
 {
 	struct gpio_chip *chip = irq_data_get_irq_chip_data(data);
 	struct sprd_pmic_eic *pmic_eic = gpiochip_get_data(chip);
+	u32 offset = irqd_to_hwirq(data);
 
 	pmic_eic->reg[REG_IE] = 0;
 	pmic_eic->reg[REG_TRIG] = 0;
+
+	gpiochip_disable_irq(chip, offset);
 }
 
 static void sprd_pmic_eic_irq_unmask(struct irq_data *data)
 {
 	struct gpio_chip *chip = irq_data_get_irq_chip_data(data);
 	struct sprd_pmic_eic *pmic_eic = gpiochip_get_data(chip);
+	u32 offset = irqd_to_hwirq(data);
+
+	gpiochip_enable_irq(chip, offset);
 
 	pmic_eic->reg[REG_IE] = 1;
 	pmic_eic->reg[REG_TRIG] = 1;
@@ -292,6 +296,17 @@ static irqreturn_t sprd_pmic_eic_irq_handler(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
+static const struct irq_chip pmic_eic_irq_chip = {
+	.name			= "sprd-pmic-eic",
+	.irq_mask		= sprd_pmic_eic_irq_mask,
+	.irq_unmask		= sprd_pmic_eic_irq_unmask,
+	.irq_set_type		= sprd_pmic_eic_irq_set_type,
+	.irq_bus_lock		= sprd_pmic_eic_bus_lock,
+	.irq_bus_sync_unlock	= sprd_pmic_eic_bus_sync_unlock,
+	.flags			= IRQCHIP_SKIP_SET_WAKE | IRQCHIP_IMMUTABLE,
+	GPIOCHIP_IRQ_RESOURCE_HELPERS,
+};
+
 static int sprd_pmic_eic_probe(struct platform_device *pdev)
 {
 	struct gpio_irq_chip *irq;
@@ -338,16 +353,8 @@ static int sprd_pmic_eic_probe(struct platform_device *pdev)
 	pmic_eic->chip.set = sprd_pmic_eic_set;
 	pmic_eic->chip.get = sprd_pmic_eic_get;
 
-	pmic_eic->intc.name = dev_name(&pdev->dev);
-	pmic_eic->intc.irq_mask = sprd_pmic_eic_irq_mask;
-	pmic_eic->intc.irq_unmask = sprd_pmic_eic_irq_unmask;
-	pmic_eic->intc.irq_set_type = sprd_pmic_eic_irq_set_type;
-	pmic_eic->intc.irq_bus_lock = sprd_pmic_eic_bus_lock;
-	pmic_eic->intc.irq_bus_sync_unlock = sprd_pmic_eic_bus_sync_unlock;
-	pmic_eic->intc.flags = IRQCHIP_SKIP_SET_WAKE;
-
 	irq = &pmic_eic->chip.irq;
-	irq->chip = &pmic_eic->intc;
+	gpio_irq_chip_set_chip(irq, &pmic_eic_irq_chip);
 	irq->threaded = true;
 
 	ret = devm_gpiochip_add_data(&pdev->dev, &pmic_eic->chip, pmic_eic);

drivers/gpio/gpio-sifive.c

@@ -215,6 +215,7 @@ static int sifive_gpio_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 	parent = irq_find_host(irq_parent);
+	of_node_put(irq_parent);
 	if (!parent) {
 		dev_err(dev, "no IRQ parent domain\n");
 		return -ENODEV;

drivers/gpio/gpio-sprd.c

@@ -120,6 +120,7 @@ static void sprd_gpio_irq_mask(struct irq_data *data)
 	u32 offset = irqd_to_hwirq(data);
 
 	sprd_gpio_update(chip, offset, SPRD_GPIO_IE, 0);
+	gpiochip_disable_irq(chip, offset);
 }
 
 static void sprd_gpio_irq_ack(struct irq_data *data)
@@ -136,6 +137,7 @@ static void sprd_gpio_irq_unmask(struct irq_data *data)
 	u32 offset = irqd_to_hwirq(data);
 
 	sprd_gpio_update(chip, offset, SPRD_GPIO_IE, 1);
+	gpiochip_enable_irq(chip, offset);
 }
 
 static int sprd_gpio_irq_set_type(struct irq_data *data,
@@ -205,13 +207,14 @@ static void sprd_gpio_irq_handler(struct irq_desc *desc)
 	chained_irq_exit(ic, desc);
 }
 
-static struct irq_chip sprd_gpio_irqchip = {
+static const struct irq_chip sprd_gpio_irqchip = {
 	.name = "sprd-gpio",
 	.irq_ack = sprd_gpio_irq_ack,
 	.irq_mask = sprd_gpio_irq_mask,
 	.irq_unmask = sprd_gpio_irq_unmask,
 	.irq_set_type = sprd_gpio_irq_set_type,
-	.flags = IRQCHIP_SKIP_SET_WAKE,
+	.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_IMMUTABLE,
+	GPIOCHIP_IRQ_RESOURCE_HELPERS,
 };
 
 static int sprd_gpio_probe(struct platform_device *pdev)
@@ -245,7 +248,7 @@ static int sprd_gpio_probe(struct platform_device *pdev)
 	sprd_gpio->chip.direction_output = sprd_gpio_direction_output;
 
 	irq = &sprd_gpio->chip.irq;
-	irq->chip = &sprd_gpio_irqchip;
+	gpio_irq_chip_set_chip(irq, &sprd_gpio_irqchip);
 	irq->handler = handle_bad_irq;
 	irq->default_type = IRQ_TYPE_NONE;
 	irq->parent_handler = sprd_gpio_irq_handler;

drivers/gpio/gpiolib.c

@@ -3905,8 +3905,8 @@ static struct gpio_desc *gpiod_find_and_request(struct device *consumer,
 						const char *label,
 						bool platform_lookup_allowed)
 {
+	unsigned long lookupflags = GPIO_LOOKUP_FLAGS_DEFAULT;
 	struct gpio_desc *desc = ERR_PTR(-ENOENT);
-	unsigned long lookupflags;
 	int ret;
 
 	if (!IS_ERR_OR_NULL(fwnode))