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ACPI: OSL: Change the type of acpi_os_map_generic_address() return value

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Modify acpi_os_map_generic_address() to return the pointer returned
by acpi_os_map_iomem() which represents the logical address
corresponding to the struct acpi_generic_address argument passed to
it or NULL if that address cannot be obtained (for example, the
argument does not represent an address in system memory or it could
not be mapped by the OS).

Among other things, that will allow the ACPI OS layer to pass the
logical addresses of the FADT GPE blocks 0 and 1 to ACPICA going
forward.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki
2020-09-11 14:59:35 +02:00
parent 7a8379eb41
commit 6915564dc5
3 changed files with 13 additions and 13 deletions
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include/acpi/acpi_io.h
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@@ -21,7 +21,7 @@ void __iomem __ref
void __ref acpi_os_unmap_iomem(void __iomem *virt, acpi_size size);
void __iomem *acpi_os_get_iomem(acpi_physical_address phys, unsigned int size);
int acpi_os_map_generic_address(struct acpi_generic_address *addr);
void __iomem *acpi_os_map_generic_address(struct acpi_generic_address *addr);
void acpi_os_unmap_generic_address(struct acpi_generic_address *addr);
#endif