From 834e1678649db1e064ee397cca161a65bacfa801 Mon Sep 17 00:00:00 2001 From: Pramod Gurav Date: Tue, 9 Sep 2014 15:50:37 +0530 Subject: [PATCH] pinctrl: at91: Fix error handling while doing gpiochio_irqchip_add 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 CC: Linus Walleij Signed-off-by: Pramod Gurav Signed-off-by: Linus Walleij --- 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 71a8e8c4f19c..51d094cc3f10 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: -- 2.30.2