From 0b7e448119428e1dcb854abb5855f66966fb82dc Mon Sep 17 00:00:00 2001 From: Pierre-Louis Bossart Date: Tue, 28 May 2024 14:29:33 -0500 Subject: [PATCH] ACPI: utils: introduce acpi_get_local_u64_address() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The ACPI _ADR is a 64-bit value. We changed the definitions in commit ca6f998cf9a2 ("ACPI: bus: change _ADR representation to 64 bits") but some helpers still assume the value is a 32-bit value. This patch adds a new helper to extract the full 64-bits. The existing 32-bit helper is kept for backwards-compatibility and cases where the _ADR is known to fit in a 32-bit value. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Péter Ujfalusi Reviewed-by: Bard Liao Acked-by: Rafael J. Wysocki Reviewed-by: Takashi Iwai Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20240528192936.16180-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown --- drivers/acpi/utils.c | 16 +++++++++++++--- include/linux/acpi.h | 1 + 2 files changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 202234ba54bd..ae9384282273 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -277,15 +277,25 @@ acpi_evaluate_integer(acpi_handle handle, EXPORT_SYMBOL(acpi_evaluate_integer); -int acpi_get_local_address(acpi_handle handle, u32 *addr) +int acpi_get_local_u64_address(acpi_handle handle, u64 *addr) { - unsigned long long adr; acpi_status status; - status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr); + status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, addr); if (ACPI_FAILURE(status)) return -ENODATA; + return 0; +} +EXPORT_SYMBOL(acpi_get_local_u64_address); + +int acpi_get_local_address(acpi_handle handle, u32 *addr) +{ + u64 adr; + int ret; + ret = acpi_get_local_u64_address(handle, &adr); + if (ret < 0) + return ret; *addr = (u32)adr; return 0; } diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 28c3fb2bef0d..65e7177bcb02 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -761,6 +761,7 @@ static inline u64 acpi_arch_get_root_pointer(void) } #endif +int acpi_get_local_u64_address(acpi_handle handle, u64 *addr); int acpi_get_local_address(acpi_handle handle, u32 *addr); const char *acpi_get_subsystem_id(acpi_handle handle); -- 2.25.1