This patch removes a call to panic function when gpiochio_irqchip_add
fails and just returns the error to the calling function.
Same return value is used to handle the error case and adds a lable
to release resources on error.
The error message has been improved to indicate failure to add irqchip
to gpiochip.
This also changes first argument to function at91_gpio_of_irq_setup from
struct device_node to struct platform_device. Because The device_node
argument was anyway not being used. Passed pdev so that on failure dev_err
can use &pdev->dev and log can be associated with proper device.
CC: Jean-Christophe Plagniol-Villard <plagn...@jcrosoft.com>
CC: Linus Walleij <linus.wall...@linaro.org>
Signed-off-by: Pramod Gurav <pramod.gu...@smartplayin.com>
---
Changes since v1:
FIxed the error massage on gpiochio_irqchip_add failure to indicate
failure to add irqchip to gpiochip.
drivers/pinctrl/pinctrl-at91.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index 4d4bea4..4fdd851 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -1605,7 +1605,7 @@ static void gpio_irq_handler(unsigned irq, struct
irq_desc *desc)
/* now it may re-trigger */
}
-static int at91_gpio_of_irq_setup(struct device_node *node,
+static int at91_gpio_of_irq_setup(struct platform_device *pdev,
struct at91_gpio_chip *at91_gpio)
{
struct at91_gpio_chip *prev = NULL;
@@ -1630,9 +1630,11 @@ static int at91_gpio_of_irq_setup(struct device_node
*node,
0,
handle_edge_irq,
IRQ_TYPE_EDGE_BOTH);
- if (ret)
- panic("at91_gpio.%d: couldn't allocate irq domain (DT).\n",
+ if (ret) {
+ dev_err(&pdev->dev, "at91_gpio.%d: Couldn't add irqchip to
gpiochip.\n",
at91_gpio->pioc_idx);
+ return ret;
+ }
/* Setup chained handler */
if (at91_gpio->pioc_idx)
@@ -1800,12 +1802,16 @@ static int at91_gpio_probe(struct platform_device *pdev)
at91_gpio_probe_fixup();
- at91_gpio_of_irq_setup(np, at91_chip);
+ ret = at91_gpio_of_irq_setup(pdev, at91_chip);
+ if (ret)
+ goto irq_setup_err;
dev_info(&pdev->dev, "at address %p\n", at91_chip->regbase);
return 0;
+irq_setup_err:
+ gpiochip_remove(chip);
gpiochip_add_err:
clk_disable(at91_chip->clock);
clk_enable_err:
--
1.7.9.5
--
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