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[RE-SEND,7/8] ACPICA: Update acpi_get_timer for 64-bit interface to acpi_hw_read

Message ID f0d4505ea8301d976d0eb24f323231d1d1ecbb35.1505377451.git.lv.zheng@intel.com (mailing list archive)
State Not Applicable, archived
Delegated to: Rafael Wysocki
Headers show

Commit Message

Lv Zheng Sept. 20, 2017, 2 a.m. UTC 
From: Bob Moore <robert.moore@intel.com>

ACPICA commit 1cdcf16447c15694faa564c0cd8e357b910344a0

Return value from acpi_hw_read is now 64 bits, but the ACPI PM
Timer is defined by the ACPI spec to be 32 bits.

Link: https://github.com/acpica/acpica/commit/1cdcf16447c1
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
---
 drivers/acpi/acpica/hwtimer.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/acpi/acpica/hwtimer.c b/drivers/acpi/acpica/hwtimer.c
index b3c5d8c..a2f4e25 100644
--- a/drivers/acpi/acpica/hwtimer.c
+++ b/drivers/acpi/acpica/hwtimer.c
@@ -94,6 +94,7 @@  ACPI_EXPORT_SYMBOL(acpi_get_timer_resolution)
 acpi_status acpi_get_timer(u32 * ticks)
 {
 	acpi_status status;
+	u64 timer_value;
 
 	ACPI_FUNCTION_TRACE(acpi_get_timer);
 
@@ -107,7 +108,14 @@  acpi_status acpi_get_timer(u32 * ticks)
 		return_ACPI_STATUS(AE_SUPPORT);
 	}
 
-	status = acpi_hw_read(ticks, &acpi_gbl_FADT.xpm_timer_block);
+	status = acpi_hw_read(&timer_value, &acpi_gbl_FADT.xpm_timer_block);
+	if (ACPI_SUCCESS(status)) {
+
+		/* ACPI PM Timer is defined to be 32 bits (PM_TMR_LEN) */
+
+		*ticks = (u32)timer_value;
+	}
+
 	return_ACPI_STATUS(status);
 }