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| author | Daniel Mack <daniel@zonque.org> | 2020-05-21 11:11:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-22 11:04:23 +0200 |
| commit | 37f3965d74d5b5c914f8f8a108ae1d94ab5ffae3 (patch) | |
| tree | a01d23fc5c963ebefbc1f8a1cb91b30f466e84d8 | |
| parent | 4dd31f1ffec6c370c3c2e0c605628bf5e16d5c46 (diff) | |
| download | linux-stable-37f3965d74d5b5c914f8f8a108ae1d94ab5ffae3.tar.gz linux-stable-37f3965d74d5b5c914f8f8a108ae1d94ab5ffae3.tar.bz2 linux-stable-37f3965d74d5b5c914f8f8a108ae1d94ab5ffae3.zip | |
sc16is7xx: Always use falling edge IRQ
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>
Link: https://lore.kernel.org/r/20200521091152.404404-4-daniel@zonque.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/sc16is7xx.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index 06e8071d5601..71a0b288fa11 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -1176,7 +1176,7 @@ 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); @@ -1304,7 +1304,7 @@ 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; @@ -1378,7 +1378,6 @@ 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; @@ -1399,14 +1398,13 @@ 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, ®cfg); - 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) @@ -1445,7 +1443,6 @@ 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) { @@ -1454,14 +1451,13 @@ 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, ®cfg); - 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) |