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authorWilliam Breathitt Gray <william.gray@linaro.org>2022-09-02 20:45:26 +0300
committerBartosz Golaszewski <brgl@bgdev.pl>2022-09-03 23:56:34 +0300
commit6890381720b27a41f2d9e68cce241336342ea3b7 (patch)
tree378ff0443b64d3797894e06b1abebca72a5bd144 /drivers/gpio
parent410a5041aa60d91ff66a861560e7c879d664270f (diff)
downloadlinux-6890381720b27a41f2d9e68cce241336342ea3b7.tar.xz
gpio: ws16c48: Make irq_chip immutable
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Make the struct irq_chip const, flag it as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: William Breathitt Gray <william.gray@linaro.org> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-ws16c48.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/gpio/gpio-ws16c48.c b/drivers/gpio/gpio-ws16c48.c
index b098f2dc196b..59fb10641598 100644
--- a/drivers/gpio/gpio-ws16c48.c
+++ b/drivers/gpio/gpio-ws16c48.c
@@ -265,6 +265,7 @@ static void ws16c48_irq_mask(struct irq_data *data)
raw_spin_lock_irqsave(&ws16c48gpio->lock, flags);
ws16c48gpio->irq_mask &= ~mask;
+ gpiochip_disable_irq(chip, offset);
port_state = ws16c48gpio->irq_mask >> (8 * port);
/* Select Register Page 2; Unlock all I/O ports */
@@ -295,6 +296,7 @@ static void ws16c48_irq_unmask(struct irq_data *data)
raw_spin_lock_irqsave(&ws16c48gpio->lock, flags);
+ gpiochip_enable_irq(chip, offset);
ws16c48gpio->irq_mask |= mask;
port_state = ws16c48gpio->irq_mask >> (8 * port);
@@ -356,12 +358,14 @@ static int ws16c48_irq_set_type(struct irq_data *data, unsigned flow_type)
return 0;
}
-static struct irq_chip ws16c48_irqchip = {
+static const struct irq_chip ws16c48_irqchip = {
.name = "ws16c48",
.irq_ack = ws16c48_irq_ack,
.irq_mask = ws16c48_irq_mask,
.irq_unmask = ws16c48_irq_unmask,
- .irq_set_type = ws16c48_irq_set_type
+ .irq_set_type = ws16c48_irq_set_type,
+ .flags = IRQCHIP_IMMUTABLE,
+ GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static irqreturn_t ws16c48_irq_handler(int irq, void *dev_id)
@@ -463,7 +467,7 @@ static int ws16c48_probe(struct device *dev, unsigned int id)
ws16c48gpio->chip.set_multiple = ws16c48_gpio_set_multiple;
girq = &ws16c48gpio->chip.irq;
- girq->chip = &ws16c48_irqchip;
+ gpio_irq_chip_set_chip(girq, &ws16c48_irqchip);
/* This will let us handle the parent IRQ in the driver */
girq->parent_handler = NULL;
girq->num_parents = 0;