Remove 'irq_base' parameter and call 'gpiochip_irqchip_add' with '0' as
irq base to automatically assign it.

Signed-off-by: Andrey Smirnov <andrew.smir...@gmail.com>
---
 drivers/gpio/gpio-sx150x.c | 21 +++------------------
 1 file changed, 3 insertions(+), 18 deletions(-)

diff --git a/drivers/gpio/gpio-sx150x.c b/drivers/gpio/gpio-sx150x.c
index e80c115..e01afd8 100644
--- a/drivers/gpio/gpio-sx150x.c
+++ b/drivers/gpio/gpio-sx150x.c
@@ -105,10 +105,6 @@ struct sx150x_device_data {
  *               the polarity of that IO line, while clearing it results
  *               in normal polarity. For chips with fewer than 16 IO pins,
  *               high-end bits are ignored.
- * @irq_base: The first 'virtual IRQ' line at which our block of GPIO-based
- *            IRQ lines will appear.  Similarly to gpio_base, the expander
- *            will create a block of irqs beginning at this number.
- *            This value is ignored if irq_summary is < 0.
  * @reset_during_probe: If set to true, the driver will trigger a full
  *                      reset of the chip at the beginning of the probe
  *                      in order to place it in a known state.
@@ -118,7 +114,6 @@ struct sx150x_platform_data {
        u16      io_pullup_ena;
        u16      io_pulldn_ena;
        u16      io_polarity;
-       unsigned irq_base;
        bool     reset_during_probe;
 };
 
@@ -126,7 +121,6 @@ struct sx150x_chip {
        struct gpio_chip                 gpio_chip;
        struct i2c_client               *client;
        const struct sx150x_device_data *dev_cfg;
-       int                              irq_base;
        int                              irq_update;
        u32                              irq_sense;
        u32                              irq_masked;
@@ -590,7 +584,6 @@ static void sx150x_init_chip(struct sx150x_chip *chip,
        chip->irq_chip.irq_set_type        = sx150x_irq_set_type;
        chip->irq_chip.irq_bus_lock        = sx150x_irq_bus_lock;
        chip->irq_chip.irq_bus_sync_unlock = sx150x_irq_bus_sync_unlock;
-       chip->irq_base                     = -1;
        chip->irq_masked                   = ~0;
        chip->irq_sense                    = 0;
        chip->dev_masked                   = ~0;
@@ -689,16 +682,13 @@ static int sx150x_init_hw(struct sx150x_chip *chip,
        return err;
 }
 
-static int sx150x_install_irq_chip(struct sx150x_chip *chip,
-                                  int irq_base)
+static int sx150x_install_irq_chip(struct sx150x_chip *chip)
 {
        int err;
 
-       chip->irq_base    = irq_base;
-
        /* Add gpio chip to irq subsystem */
        err = gpiochip_irqchip_add(&chip->gpio_chip,
-               &chip->irq_chip, chip->irq_base,
+               &chip->irq_chip, 0,
                handle_edge_irq, IRQ_TYPE_EDGE_BOTH);
        if (err) {
                dev_err(&chip->client->dev,
@@ -710,10 +700,6 @@ static int sx150x_install_irq_chip(struct sx150x_chip 
*chip,
                        chip->client->irq, NULL, sx150x_irq_thread_fn,
                        IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_FALLING,
                        chip->irq_chip.name, chip);
-       if (err < 0) {
-               chip->irq_base    = -1;
-       }
-
        return err;
 }
 
@@ -748,8 +734,7 @@ static int sx150x_probe(struct i2c_client *client,
                return rc;
 
        if (client->irq) {
-               rc = sx150x_install_irq_chip(chip,
-                                       pdata->irq_base);
+               rc = sx150x_install_irq_chip(chip);
                if (rc < 0)
                        return rc;
        }
-- 
2.5.5

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