2 files changed, 6 insertions, 1 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index de3300c9056a..ed7d7913af8c 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1823,6 +1823,11 @@ and is between 256 and 4096 characters. It is defined in the file
         thermal.off=    [HW,ACPI]
                         1: disable ACPI thermal control
 
+        thermal.tzp=    [HW,ACPI]
+                        Specify global default ACPI thermal zone polling rate
+                        <deci-seconds>: poll all this frequency
+                        0: no polling (default)
+
         time            Show timing data prefixed to each printk message line
                         [deprecated, see 'printk.time']
 
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 61337d969d7f..b6b3bec84547 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -75,7 +75,7 @@ MODULE_DESCRIPTION("ACPI Thermal Zone Driver");
 MODULE_LICENSE("GPL");
 
 static int tzp;
-module_param(tzp, int, 0);
+module_param(tzp, int, 0444);
 MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.\n");
 
 static int off;