5.15-stable review patch. If anyone has any objections, please let me know.
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From: Linus Walleij linus.walleij@linaro.org
[ Upstream commit b4510f8fd5d0e9afa777f115871f5d522540c417 ]
Convert the driver to immutable irq-chip with a bit of intuition.
Cc: Marc Zyngier maz@kernel.org Signed-off-by: Linus Walleij linus.walleij@linaro.org Reviewed-by: Marc Zyngier maz@kernel.org Signed-off-by: Bartosz Golaszewski bartosz.golaszewski@linaro.org Stable-dep-of: 9860370c2172 ("gpio: xilinx: Convert gpio_lock to raw spinlock") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpio/gpio-xilinx.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-)
diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c index db616ae560a3c..067ac1805853c 100644 --- a/drivers/gpio/gpio-xilinx.c +++ b/drivers/gpio/gpio-xilinx.c @@ -68,7 +68,6 @@ struct xgpio_instance { DECLARE_BITMAP(dir, 64); spinlock_t gpio_lock; /* For serializing operations */ int irq; - struct irq_chip irqchip; DECLARE_BITMAP(enable, 64); DECLARE_BITMAP(rising_edge, 64); DECLARE_BITMAP(falling_edge, 64); @@ -416,6 +415,8 @@ static void xgpio_irq_mask(struct irq_data *irq_data) xgpio_writereg(chip->regs + XGPIO_IPIER_OFFSET, temp); } spin_unlock_irqrestore(&chip->gpio_lock, flags); + + gpiochip_disable_irq(&chip->gc, irq_offset); }
/** @@ -431,6 +432,8 @@ static void xgpio_irq_unmask(struct irq_data *irq_data) u32 old_enable = xgpio_get_value32(chip->enable, bit); u32 mask = BIT(bit / 32), val;
+ gpiochip_enable_irq(&chip->gc, irq_offset); + spin_lock_irqsave(&chip->gpio_lock, flags);
__set_bit(bit, chip->enable); @@ -544,6 +547,16 @@ static void xgpio_irqhandler(struct irq_desc *desc) chained_irq_exit(irqchip, desc); }
+static const struct irq_chip xgpio_irq_chip = { + .name = "gpio-xilinx", + .irq_ack = xgpio_irq_ack, + .irq_mask = xgpio_irq_mask, + .irq_unmask = xgpio_irq_unmask, + .irq_set_type = xgpio_set_irq_type, + .flags = IRQCHIP_IMMUTABLE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, +}; + /** * xgpio_probe - Probe method for the GPIO device. * @pdev: pointer to the platform device @@ -664,12 +677,6 @@ static int xgpio_probe(struct platform_device *pdev) if (chip->irq <= 0) goto skip_irq;
- chip->irqchip.name = "gpio-xilinx"; - chip->irqchip.irq_ack = xgpio_irq_ack; - chip->irqchip.irq_mask = xgpio_irq_mask; - chip->irqchip.irq_unmask = xgpio_irq_unmask; - chip->irqchip.irq_set_type = xgpio_set_irq_type; - /* Disable per-channel interrupts */ xgpio_writereg(chip->regs + XGPIO_IPIER_OFFSET, 0); /* Clear any existing per-channel interrupts */ @@ -679,7 +686,7 @@ static int xgpio_probe(struct platform_device *pdev) xgpio_writereg(chip->regs + XGPIO_GIER_OFFSET, XGPIO_GIER_IE);
girq = &chip->gc.irq; - girq->chip = &chip->irqchip; + gpio_irq_chip_set_chip(girq, &xgpio_irq_chip); girq->parent_handler = xgpio_irqhandler; girq->num_parents = 1; girq->parents = devm_kcalloc(&pdev->dev, 1,