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List:       linaro-acpi
Subject:    [Linaro-acpi] [PATCH 10/13] ACPI: ACPI_FADT_C2_MP_SUPPORTED must be ignored in HW reduced mode
From:       al.stone () linaro ! org
Date:       2013-10-24 22:23:09
Message-ID: 1382653392-27640-11-git-send-email-al.stone () linaro ! org
[Download RAW message or body]

From: Al Stone <ahs3@redhat.com>

Signed-off-by: Al Stone <al.stone@linaro.org>
---
 drivers/acpi/processor_idle.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 3e20b4c..c6c8058 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -312,7 +312,8 @@ static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr)
 	 * Check for P_LVL2_UP flag before entering C2 and above on
 	 * an SMP system.
 	 */
-	if ((num_online_cpus() > 1) &&
+	if (!acpi_gbl_reduced_hardware &&
+	    (num_online_cpus() > 1) &&
 	    !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
 		return -ENODEV;
 #endif
@@ -1014,7 +1015,8 @@ static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr,
 			continue;
 
 #ifdef CONFIG_HOTPLUG_CPU
-		if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
+		if (!acpi_gbl_reduced_hardware &&
+		    (cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
 		    !pr->flags.has_cst &&
 		    !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
 			continue;
@@ -1069,7 +1071,8 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr)
 			continue;
 
 #ifdef CONFIG_HOTPLUG_CPU
-		if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
+		if (!acpi_gbl_reduced_hardware &&
+		    (cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
 		    !pr->flags.has_cst &&
 		    !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
 			continue;
-- 
1.8.3.1


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