[PATCH] mfd: max77620: Do not allocate IRQs upfront

[Thierry Reding]

From: Thierry Reding <tred...@nvidia.com>

regmap_add_irq_chip() will try to allocate all of the IRQ descriptors
upfront if passed a non-zero irq_base parameter. However, the intention
is to allocate IRQ descriptors on an as-needed basis if possible. Pass 0
instead of -1 to fix that use-case.

Signed-off-by: Thierry Reding <tred...@nvidia.com>
---
 drivers/mfd/max77620.c       | 5 ++---
 include/linux/mfd/max77620.h | 1 -
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c
index a851ff473a44..c7ed5c353553 100644
--- a/drivers/mfd/max77620.c
+++ b/drivers/mfd/max77620.c
@@ -507,7 +507,6 @@ static int max77620_probe(struct i2c_client *client,
 
        i2c_set_clientdata(client, chip);
        chip->dev = &client->dev;
-       chip->irq_base = -1;
        chip->chip_irq = client->irq;
        chip->chip_id = (enum max77620_chip_id)id->driver_data;
 
@@ -545,8 +544,8 @@ static int max77620_probe(struct i2c_client *client,
 
        max77620_top_irq_chip.irq_drv_data = chip;
        ret = devm_regmap_add_irq_chip(chip->dev, chip->rmap, client->irq,
-                                      IRQF_ONESHOT | IRQF_SHARED,
-                                      chip->irq_base, &max77620_top_irq_chip,
+                                      IRQF_ONESHOT | IRQF_SHARED, 0,
+                                      &max77620_top_irq_chip,
                                       &chip->top_irq_data);
        if (ret < 0) {
                dev_err(chip->dev, "Failed to add regmap irq: %d\n", ret);
diff --git a/include/linux/mfd/max77620.h b/include/linux/mfd/max77620.h
index 12ba157cb83f..f552ef5b1100 100644
--- a/include/linux/mfd/max77620.h
+++ b/include/linux/mfd/max77620.h
@@ -329,7 +329,6 @@ struct max77620_chip {
        struct regmap *rmap;
 
        int chip_irq;
-       int irq_base;
 
        /* chip id */
        enum max77620_chip_id chip_id;
-- 
2.23.0