aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation
diff options
context:
space:
mode:
authorRafael J. Wysocki <rjw@sisk.pl>2008-01-07 18:07:39 -0500
committerLen Brown <len.brown@intel.com>2008-02-01 18:30:58 -0500
commit60417f5976df029227450b46d7fa6f0e9b1e654c (patch)
treeb0faa81f4517aa41c6113824b59a47b87b4aea2f /Documentation
parent3c1d2b6085d75df0691cec6a4a053c0aa55fe4c9 (diff)
ACPI suspend: Call _PTS before suspending devices
The ACPI 1.0 specification wants us to put devices into low power states after executing the _PTS global control method, while ACPI 2.0 and later want us to do that in the reverse order. The current suspend code follows ACPI 2.0 in that respect which causes some ACPI 1.0x systems to hang during suspend (ref. http://bugzilla.kernel.org/show_bug.cgi?id=9528). Make the suspend code execute _PTS before putting devices into low power states (ie. in accordance with ACPI 1.0x) and provide a command line option to override the default if need be. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/kernel-parameters.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 92c40d174355..cf3868956f1e 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -168,6 +168,11 @@ and is between 256 and 4096 characters. It is defined in the file
168 acpi_irq_isa= [HW,ACPI] If irq_balance, mark listed IRQs used by ISA 168 acpi_irq_isa= [HW,ACPI] If irq_balance, mark listed IRQs used by ISA
169 Format: <irq>,<irq>... 169 Format: <irq>,<irq>...
170 170
171 acpi_new_pts_ordering [HW,ACPI]
172 Enforce the ACPI 2.0 ordering of the _PTS control
173 method wrt putting devices into low power states
174 default: pre ACPI 2.0 ordering of _PTS
175
171 acpi_no_auto_ssdt [HW,ACPI] Disable automatic loading of SSDT 176 acpi_no_auto_ssdt [HW,ACPI] Disable automatic loading of SSDT
172 177
173 acpi_os_name= [HW,ACPI] Tell ACPI BIOS the name of the OS 178 acpi_os_name= [HW,ACPI] Tell ACPI BIOS the name of the OS