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spi: Export acpi_spi_find_controller_by_adev()

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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: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20231014205314.59333-2-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Hans de Goede 2023-10-14 22:53:11 +02:00 committed by Mark Brown
parent f6d7f050e2
commit a8ecbc5416
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GPG Key ID: 24D68B725D5487D0
2 changed files with 3 additions and 3 deletions
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5
drivers/spi/spi.c
View File

@ -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)
{

1
include/linux/spi/spi.h
View File

@ -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);