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

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

[Thierry Reding]

From: Thierry Reding <treding@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 <treding@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

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

[Lee Jones]

On Wed, 02 Oct 2019, Thierry Reding wrote:

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

Applied, thanks.

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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