Unverified Commit a0c74f6c authored by Mark Brown's avatar Mark Brown
Browse files

platform: Provide stubs for !HAS_IOMEM builds 



The various _ioremap_resource functions are not built when
CONFIG_HAS_IOMEM is disabled but no stubs are provided. Given how
widespread IOMEM usage is in drivers and how rare !IOMEM configurations
are in practical use let's just provide some stubs so users will build
without having to add explicit dependencies on IOMEM.

The most likely use case is builds with UML for KUnit testing.

Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: default avatarDavid Gow <davidgow@google.com>
Reviewed-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230718-asoc-topology-kunit-enable-v2-2-0ee11e662b92@kernel.org


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent da7c07b1

include/linux/platform_device.h

+28 −0
Original line number Diff line number Diff line
@@ -63,6 +63,8 @@ extern struct resource *platform_get_mem_or_io(struct platform_device *, 
extern struct device *

platform_find_device_by_driver(struct device *start,

			       const struct device_driver *drv);



#ifdef CONFIG_HAS_IOMEM

extern void __iomem *

devm_platform_get_and_ioremap_resource(struct platform_device *pdev,

				unsigned int index, struct resource **res);
@@ -72,6 +74,32 @@ devm_platform_ioremap_resource(struct platform_device *pdev, 
extern void __iomem *

devm_platform_ioremap_resource_byname(struct platform_device *pdev,

				      const char *name);

#else



static inline void __iomem *

devm_platform_get_and_ioremap_resource(struct platform_device *pdev,

				unsigned int index, struct resource **res)

{

	return ERR_PTR(-EINVAL);

}





static inline void __iomem *

devm_platform_ioremap_resource(struct platform_device *pdev,

			       unsigned int index)

{

	return ERR_PTR(-EINVAL);

}



static inline void __iomem *

devm_platform_ioremap_resource_byname(struct platform_device *pdev,

				      const char *name)

{

	return ERR_PTR(-EINVAL);

}



#endif



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

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

extern int platform_irq_count(struct platform_device *);