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From: Daniel Mack <daniel@zonque.org>
To: devicetree@vger.kernel.org, linux-serial@vger.kernel.org
Cc: gregkh@linuxfoundation.org, robh+dt@kernel.org, jslaby@suse.com,
	pascal.huerst@gmail.com, Daniel Mack <daniel@zonque.org>
Subject: [PATCH 3/4] sc16is7xx: Always use falling edge IRQ
Date: Fri,  8 May 2020 16:37:56 +0200	[thread overview]
Message-ID: <20200508143757.2609740-4-daniel@zonque.org> (raw)
In-Reply-To: <20200508143757.2609740-1-daniel@zonque.org>

The driver currently only uses IRQF_TRIGGER_FALLING if the probing
happened without a device-tree setup. The device however will always
generate falling edges on its IRQ line, so let's use that flag in
all cases.

Signed-off-by: Daniel Mack <daniel@zonque.org>
---
 drivers/tty/serial/sc16is7xx.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index e4025b8566a4..0997a5cac02a 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1185,7 +1185,7 @@ static int sc16is7xx_gpio_direction_output(struct gpio_chip *chip,
 
 static int sc16is7xx_probe(struct device *dev,
 			   const struct sc16is7xx_devtype *devtype,
-			   struct regmap *regmap, int irq, unsigned long flags)
+			   struct regmap *regmap, int irq)
 {
 	struct sched_param sched_param = { .sched_priority = MAX_RT_PRIO / 2 };
 	unsigned long freq = 0, *pfreq = dev_get_platdata(dev);
@@ -1318,7 +1318,7 @@ static int sc16is7xx_probe(struct device *dev,
 
 	/* Setup interrupt */
 	ret = devm_request_irq(dev, irq, sc16is7xx_irq,
-			       flags, dev_name(dev), s);
+			       IRQF_TRIGGER_FALLING, dev_name(dev), s);
 	if (!ret)
 		return 0;
 
@@ -1392,7 +1392,6 @@ static struct regmap_config regcfg = {
 static int sc16is7xx_spi_probe(struct spi_device *spi)
 {
 	const struct sc16is7xx_devtype *devtype;
-	unsigned long flags = 0;
 	struct regmap *regmap;
 	int ret;
 
@@ -1413,14 +1412,13 @@ static int sc16is7xx_spi_probe(struct spi_device *spi)
 		const struct spi_device_id *id_entry = spi_get_device_id(spi);
 
 		devtype = (struct sc16is7xx_devtype *)id_entry->driver_data;
-		flags = IRQF_TRIGGER_FALLING;
 	}
 
 	regcfg.max_register = (0xf << SC16IS7XX_REG_SHIFT) |
 			      (devtype->nr_uart - 1);
 	regmap = devm_regmap_init_spi(spi, &regcfg);
 
-	return sc16is7xx_probe(&spi->dev, devtype, regmap, spi->irq, flags);
+	return sc16is7xx_probe(&spi->dev, devtype, regmap, spi->irq);
 }
 
 static int sc16is7xx_spi_remove(struct spi_device *spi)
@@ -1459,7 +1457,6 @@ static int sc16is7xx_i2c_probe(struct i2c_client *i2c,
 			       const struct i2c_device_id *id)
 {
 	const struct sc16is7xx_devtype *devtype;
-	unsigned long flags = 0;
 	struct regmap *regmap;
 
 	if (i2c->dev.of_node) {
@@ -1468,14 +1465,13 @@ static int sc16is7xx_i2c_probe(struct i2c_client *i2c,
 			return -ENODEV;
 	} else {
 		devtype = (struct sc16is7xx_devtype *)id->driver_data;
-		flags = IRQF_TRIGGER_FALLING;
 	}
 
 	regcfg.max_register = (0xf << SC16IS7XX_REG_SHIFT) |
 			      (devtype->nr_uart - 1);
 	regmap = devm_regmap_init_i2c(i2c, &regcfg);
 
-	return sc16is7xx_probe(&i2c->dev, devtype, regmap, i2c->irq, flags);
+	return sc16is7xx_probe(&i2c->dev, devtype, regmap, i2c->irq);
 }
 
 static int sc16is7xx_i2c_remove(struct i2c_client *client)
-- 
2.26.2


  parent reply	other threads:[~2020-05-08 14:43 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-08 14:37 [PATCH 0/4] sc16is7xx: Add IrDA mode and threaded IRQ Daniel Mack
2020-05-08 14:37 ` [PATCH 1/4] dt-bindings: sc16is7xx: Add flag to activate IrDA mode Daniel Mack
2020-05-18 18:08   ` Rob Herring
2020-05-18 18:41     ` Daniel Mack
2020-05-19 12:01       ` Maarten Brock
2020-05-08 14:37 ` [PATCH 2/4] " Daniel Mack
2020-05-08 14:37 ` Daniel Mack [this message]
2020-05-09 12:41   ` [PATCH 3/4] sc16is7xx: Always use falling edge IRQ Maarten Brock
2020-05-08 14:37 ` [PATCH 4/4] sc16is7xx: Use threaded IRQ Daniel Mack
2020-05-09 12:55   ` Maarten Brock
2020-05-17 20:44     ` Daniel Mack
2020-05-18 11:14       ` Maarten Brock
2020-05-18 16:57         ` Daniel Mack
2020-05-19 16:32           ` Maarten Brock
2020-05-19 17:37             ` Daniel Mack

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