diff options
| -rw-r--r-- | drivers/base/platform.c | 55 |
1 files changed, 21 insertions, 34 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 1e61fac64435..9cd34def2237 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -168,7 +168,25 @@ devm_platform_ioremap_resource_byname(struct platform_device *pdev, EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource_byname); #endif /* CONFIG_HAS_IOMEM */ -static int platform_do_get_irq(struct platform_device *dev, unsigned int num) +/** + * platform_get_irq_optional - get an optional IRQ for a device + * @dev: platform device + * @num: IRQ number index + * + * Gets an IRQ for a platform device. Device drivers should check the return + * value for errors so as to not pass a negative integer value to the + * request_irq() APIs. This is the same as platform_get_irq(), except that it + * does not print an error message if an IRQ can not be obtained. + * + * For example:: + * + * int irq = platform_get_irq_optional(pdev, 0); + * if (irq < 0) + * return irq; + * + * Return: non-zero IRQ number on success, negative error number on failure. + */ +int platform_get_irq_optional(struct platform_device *dev, unsigned int num) { int ret; #ifdef CONFIG_SPARC @@ -236,37 +254,6 @@ out: WARN(ret == 0, "0 is an invalid IRQ number\n"); return ret; } - -/** - * platform_get_irq_optional - get an optional IRQ for a device - * @dev: platform device - * @num: IRQ number index - * - * Gets an IRQ for a platform device. Device drivers should check the return - * value for errors so as to not pass a negative integer value to the - * request_irq() APIs. This is the same as platform_get_irq(), except that it - * does not print an error message if an IRQ can not be obtained and returns - * 0 when IRQ resource has not been found. - * - * For example:: - * - * int irq = platform_get_irq_optional(pdev, 0); - * if (irq < 0) - * return irq; - * if (irq > 0) - * ...we have IRQ line defined... - * - * Return: non-zero IRQ number on success, negative error number on failure. - */ -int platform_get_irq_optional(struct platform_device *dev, unsigned int num) -{ - int ret; - - ret = platform_do_get_irq(dev, num); - if (ret == -ENXIO) - return 0; - return ret; -} EXPORT_SYMBOL_GPL(platform_get_irq_optional); /** @@ -290,7 +277,7 @@ int platform_get_irq(struct platform_device *dev, unsigned int num) { int ret; - ret = platform_do_get_irq(dev, num); + ret = platform_get_irq_optional(dev, num); if (ret < 0 && ret != -EPROBE_DEFER) dev_err(&dev->dev, "IRQ index %u not found\n", num); @@ -308,7 +295,7 @@ int platform_irq_count(struct platform_device *dev) { int ret, nr = 0; - while ((ret = platform_do_get_irq(dev, nr)) >= 0) + while ((ret = platform_get_irq_optional(dev, nr)) >= 0) nr++; if (ret == -EPROBE_DEFER) |