[ACPI] re-enable platform-specific hotkey drivers by default
When both platform-specific and generic drivers exist,
enable generic over-ride with "acpi_generic_hotkey".
http://bugzilla.kernel.org/show_bug.cgi?id=4953
Signed-off-by: Luming Yu <luming.yu@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/Documentation/acpi-hotkey.txt b/Documentation/acpi-hotkey.txt
index 4c115a7..0acdc80 100644
--- a/Documentation/acpi-hotkey.txt
+++ b/Documentation/acpi-hotkey.txt
@@ -33,3 +33,6 @@
attached to /proc/acpi/hotkey/poll_method, which is dnyamically
created. Please use command "cat /proc/acpi/hotkey/polling_method"
to retrieve it.
+
+Note: Use cmdline "acpi_generic_hotkey" to over-ride
+loading any platform specific drivers.
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 4924d387..3c684ef 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -159,6 +159,11 @@
acpi_fake_ecdt [HW,ACPI] Workaround failure due to BIOS lacking ECDT
+ acpi_generic_hotkey [HW,ACPI]
+ Allow consolidated generic hotkey driver to
+ over-ride platform specific driver.
+ See also Documentation/acpi-hotkey.txt.
+
ad1816= [HW,OSS]
Format: <io>,<irq>,<dma>,<dma2>
See also Documentation/sound/oss/AD1816.
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index bdd9f37..cb16cc1 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -71,7 +71,7 @@
extern char line_buf[80];
#endif /*ENABLE_DEBUGGER*/
-int acpi_specific_hotkey_enabled;
+int acpi_specific_hotkey_enabled = TRUE;
EXPORT_SYMBOL(acpi_specific_hotkey_enabled);
static unsigned int acpi_irq_irq;
@@ -1158,11 +1158,11 @@
int __init
acpi_hotkey_setup(char *str)
{
- acpi_specific_hotkey_enabled = TRUE;
+ acpi_specific_hotkey_enabled = FALSE;
return 1;
}
-__setup("acpi_specific_hotkey", acpi_hotkey_setup);
+__setup("acpi_generic_hotkey", acpi_hotkey_setup);
/*
* max_cstate is defined in the base kernel so modules can