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Commit 11f95b1a authored by Stephen Boyd's avatar Stephen Boyd Committed by Fenglin Wu
Browse files

driver-core: platform: Add platform_irq_count() 



A recent patch added calls to of_irq_count() in the qcom pinctrl
drivers and that caused module build failures because
of_irq_count() is not an exported symbol. We shouldn't export
of_irq_count() to modules because it's an internal OF API that
shouldn't be used by drivers. Platform drivers should use
platform device APIs instead. Therefore, add a platform_irq_count()
API that mirrors the of_irq_count() API so that platform drivers
can stay DT agnostic.

Change-Id: I34cfc11feb2fbc2acc41e3697006d86a3cad3445
Cc: Andy Gross <andy.gross@linaro.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Git-commit: 4b83555d5098e73cf2c5ca7f86c17ca0ba3b968e
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: default avatarFenglin Wu <fenglinw@codeaurora.org>
parent e841045b

drivers/base/platform.c

+20 −0
Original line number Diff line number Diff line
@@ -116,6 +116,26 @@ int platform_get_irq(struct platform_device *dev, unsigned int num) 
}

EXPORT_SYMBOL_GPL(platform_get_irq);



/**

 * platform_irq_count - Count the number of IRQs a platform device uses

 * @dev: platform device

 *

 * Return: Number of IRQs a platform device uses or EPROBE_DEFER

 */

int platform_irq_count(struct platform_device *dev)

{

	int ret, nr = 0;



	while ((ret = platform_get_irq(dev, nr)) >= 0)

		nr++;



	if (ret == -EPROBE_DEFER)

		return ret;



	return nr;

}

EXPORT_SYMBOL_GPL(platform_irq_count);



/**

 * platform_get_resource_byname - get a resource for a device by name

 * @dev: platform device

include/linux/platform_device.h

+1 −0
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ extern void arch_setup_pdev_archdata(struct platform_device *); 
extern struct resource *platform_get_resource(struct platform_device *,

					      unsigned int, unsigned int);

extern int platform_get_irq(struct platform_device *, unsigned int);

extern int platform_irq_count(struct platform_device *);

extern struct resource *platform_get_resource_byname(struct platform_device *,

						     unsigned int,

						     const char *);