system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-08 20:34:15 +00:00
Code Issues Packages Projects Releases Wiki Activity

driver core: simplify definitions of platform_get_irq*

Browse source 
platform_get_irq_optional is just a wrapper for __platform_get_irq. So
rename __platform_get_irq to platform_get_irq_optional and drop
platform_get_irq_optional's previous implementation. This way there is
one function and one indirection less without loss of functionality.

Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20191009093746.12095-1-uwe@kleine-koenig.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Uwe Kleine-König 2019-10-09 11:37:46 +02:00 committed by Greg Kroah-Hartman
parent c31e73121f
commit ec4e290688
1 changed files with 21 additions and 26 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

47
drivers/base/platform.c
View file

@ -80,7 +80,24 @@ void __iomem *devm_platform_ioremap_resource(struct platform_device *pdev,
EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource);
#endif /* CONFIG_HAS_IOMEM */
static int __platform_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.
*
* Example:
* int irq = platform_get_irq_optional(pdev, 0);
* if (irq < 0)
* return irq;
*
* Return: IRQ number on success, negative error number on failure.
*/
int platform_get_irq_optional(struct platform_device *dev, unsigned int num)
{
#ifdef CONFIG_SPARC
/* sparc does not have irqs represented as IORESOURCE_IRQ resources */
@ -144,6 +161,7 @@ static int __platform_get_irq(struct platform_device *dev, unsigned int num)
return -ENXIO;
#endif
}
EXPORT_SYMBOL_GPL(platform_get_irq_optional);
/**
* platform_get_irq - get an IRQ for a device
@ -165,7 +183,7 @@ int platform_get_irq(struct platform_device *dev, unsigned int num)
{
int ret;
ret = __platform_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);
@ -173,29 +191,6 @@ int platform_get_irq(struct platform_device *dev, unsigned int num)
}
EXPORT_SYMBOL_GPL(platform_get_irq);
/**
* 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.
*
* Example:
* int irq = platform_get_irq_optional(pdev, 0);
* if (irq < 0)
* return irq;
*
* Return: IRQ number on success, negative error number on failure.
*/
int platform_get_irq_optional(struct platform_device *dev, unsigned int num)
{
return __platform_get_irq(dev, num);
}
EXPORT_SYMBOL_GPL(platform_get_irq_optional);
/**
* platform_irq_count - Count the number of IRQs a platform device uses
* @dev: platform device
@ -206,7 +201,7 @@ int platform_irq_count(struct platform_device *dev)
{
int ret, nr = 0;
while ((ret = __platform_get_irq(dev, nr)) >= 0)
while ((ret = platform_get_irq_optional(dev, nr)) >= 0)
nr++;
if (ret == -EPROBE_DEFER)