Unverified Commit a8ecbc54 authored by Hans de Goede's avatar Hans de Goede Committed by Mark Brown
Browse files

spi: Export acpi_spi_find_controller_by_adev() 



Export acpi_spi_find_controller_by_adev() so that ACPI glue code which
wants to dynamically create a spi_device using acpi_spi_device_alloc() or
spi_new_device() on a controller, to which the code does not already have
a reference, can find the controller.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20231014205314.59333-2-hdegoede@redhat.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f6d7f050

drivers/spi/spi.c

+2 −3
Original line number Diff line number Diff line
@@ -2523,8 +2523,6 @@ static void acpi_spi_parse_apple_properties(struct acpi_device *dev, 
		lookup->mode |= SPI_CPHA;

}



static struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev);



static int acpi_spi_add_resource(struct acpi_resource *ares, void *data)

{

	struct acpi_spi_lookup *lookup = data;
@@ -4519,7 +4517,7 @@ static int spi_acpi_controller_match(struct device *dev, const void *data) 
	return ACPI_COMPANION(dev->parent) == data;

}



static struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev)

struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev)

{

	struct device *dev;
@@ -4533,6 +4531,7 @@ static struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_devic 


	return container_of(dev, struct spi_controller, dev);

}

EXPORT_SYMBOL_GPL(acpi_spi_find_controller_by_adev);



static struct spi_device *acpi_spi_find_device_by_adev(struct acpi_device *adev)

{

include/linux/spi/spi.h

+1 −0
Original line number Diff line number Diff line
@@ -867,6 +867,7 @@ extern int devm_spi_register_controller(struct device *dev, 
extern void spi_unregister_controller(struct spi_controller *ctlr);



#if IS_ENABLED(CONFIG_ACPI)

extern struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev);

extern struct spi_device *acpi_spi_device_alloc(struct spi_controller *ctlr,

						struct acpi_device *adev,

						int index);