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gpio: tegra186: allocate irqs with the main struct

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Remove an extra kcalloc call by using a flexible array member.

Add __counted_by for extra runtime analysis.

Assign counting variable immediately after allocation as required by
__counted_by.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260309232804.331882-1-rosenp@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
This commit is contained in:
Rosen Penev 2026-03-09 16:28:04 -07:00 committed by Bartosz Golaszewski
parent 223d9a310c
commit b4784adfe3
1 changed files with 9 additions and 13 deletions
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22
drivers/gpio/gpio-tegra186.c
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@ -125,7 +125,6 @@ struct tegra_gpio_soc {
struct tegra_gpio {
struct gpio_chip gpio;
unsigned int num_irq;
unsigned int *irq;
const struct tegra_gpio_soc *soc;
unsigned int num_irqs_per_bank;
@ -133,6 +132,8 @@ struct tegra_gpio {
void __iomem *secure;
void __iomem *base;
unsigned int irq[] __counted_by(num_irq);
};
static const struct tegra_gpio_port *
@ -859,10 +860,16 @@ static int tegra186_gpio_probe(struct platform_device *pdev)
char **names;
int node, err;
gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
err = platform_irq_count(pdev);
if (err < 0)
return err;
gpio = devm_kzalloc(&pdev->dev, struct_size(gpio, irq, err), GFP_KERNEL);
if (!gpio)
return -ENOMEM;
gpio->num_irq = err;
gpio->soc = device_get_match_data(&pdev->dev);
gpio->gpio.label = gpio->soc->name;
gpio->gpio.parent = &pdev->dev;
@ -889,21 +896,10 @@ static int tegra186_gpio_probe(struct platform_device *pdev)
if (IS_ERR(gpio->base))
return PTR_ERR(gpio->base);
err = platform_irq_count(pdev);
if (err < 0)
return err;
gpio->num_irq = err;
err = tegra186_gpio_irqs_per_bank(gpio);
if (err < 0)
return err;
gpio->irq = devm_kcalloc(&pdev->dev, gpio->num_irq, sizeof(*gpio->irq),
GFP_KERNEL);
if (!gpio->irq)
return -ENOMEM;
for (i = 0; i < gpio->num_irq; i++) {
err = platform_get_irq(pdev, i);
if (err < 0)