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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Linus Walleij <linus.walleij@linaro.org>,
	Michael Walle <michael@walle.cc>,
	linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: Lars Povlsen <lars.povlsen@microchip.com>,
	Steen Hegelund <Steen.Hegelund@microchip.com>,
	UNGLinuxDriver@microchip.com,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1 1/1] pinctr: microchip-sgpio: Correct the fwnode_irq_get() return value check
Date: Mon,  5 Sep 2022 22:08:49 +0300	[thread overview]
Message-ID: <20220905190849.73194-1-andriy.shevchenko@linux.intel.com> (raw)

fwnode_irq_get() may return all possible signed values, such as Linux
error code. Fix the code to handle this properly.

Fixes: be2dc859abd4 ("pinctrl: pinctrl-microchip-sgpio: Add irq support (for sparx5)")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/pinctrl/pinctrl-microchip-sgpio.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-microchip-sgpio.c b/drivers/pinctrl/pinctrl-microchip-sgpio.c
index 6f55bf7d5e05..0771b743a940 100644
--- a/drivers/pinctrl/pinctrl-microchip-sgpio.c
+++ b/drivers/pinctrl/pinctrl-microchip-sgpio.c
@@ -864,9 +864,10 @@ static int microchip_sgpio_register_bank(struct device *dev,
 	gc->can_sleep		= !bank->is_input;
 
 	if (bank->is_input && priv->properties->flags & SGPIO_FLAGS_HAS_IRQ) {
-		int irq = fwnode_irq_get(fwnode, 0);
+		int irq;
 
-		if (irq) {
+		irq = fwnode_irq_get(fwnode, 0);
+		if (irq > 0) {
 			struct gpio_irq_chip *girq = &gc->irq;
 
 			gpio_irq_chip_set_chip(girq, &microchip_sgpio_irqchip);
-- 
2.35.1


WARNING: multiple messages have this Message-ID (diff)
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Linus Walleij <linus.walleij@linaro.org>,
	Michael Walle <michael@walle.cc>,
	linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: Lars Povlsen <lars.povlsen@microchip.com>,
	Steen Hegelund <Steen.Hegelund@microchip.com>,
	UNGLinuxDriver@microchip.com,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1 1/1] pinctr: microchip-sgpio: Correct the fwnode_irq_get() return value check
Date: Mon,  5 Sep 2022 22:08:49 +0300	[thread overview]
Message-ID: <20220905190849.73194-1-andriy.shevchenko@linux.intel.com> (raw)

fwnode_irq_get() may return all possible signed values, such as Linux
error code. Fix the code to handle this properly.

Fixes: be2dc859abd4 ("pinctrl: pinctrl-microchip-sgpio: Add irq support (for sparx5)")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/pinctrl/pinctrl-microchip-sgpio.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-microchip-sgpio.c b/drivers/pinctrl/pinctrl-microchip-sgpio.c
index 6f55bf7d5e05..0771b743a940 100644
--- a/drivers/pinctrl/pinctrl-microchip-sgpio.c
+++ b/drivers/pinctrl/pinctrl-microchip-sgpio.c
@@ -864,9 +864,10 @@ static int microchip_sgpio_register_bank(struct device *dev,
 	gc->can_sleep		= !bank->is_input;
 
 	if (bank->is_input && priv->properties->flags & SGPIO_FLAGS_HAS_IRQ) {
-		int irq = fwnode_irq_get(fwnode, 0);
+		int irq;
 
-		if (irq) {
+		irq = fwnode_irq_get(fwnode, 0);
+		if (irq > 0) {
 			struct gpio_irq_chip *girq = &gc->irq;
 
 			gpio_irq_chip_set_chip(girq, &microchip_sgpio_irqchip);
-- 
2.35.1


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             reply	other threads:[~2022-09-05 19:08 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-05 19:08 Andy Shevchenko [this message]
2022-09-05 19:08 ` [PATCH v1 1/1] pinctr: microchip-sgpio: Correct the fwnode_irq_get() return value check Andy Shevchenko
2022-09-05 22:24 ` Michael Walle
2022-09-05 22:24   ` Michael Walle
2022-09-06 11:47   ` Andy Shevchenko
2022-09-06 11:47     ` Andy Shevchenko

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