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authorBjorn Helgaas <bjorn.helgaas@hp.com>2008-11-08 00:58:00 +0100
committerLen Brown <len.brown@intel.com>2008-11-08 03:45:16 +0100
commit87b586088ef953c602680e5aff8ab83a2e299498 (patch)
tree1c6294ea2768254dab8cbb1bf7581ac00bad7fc6 /drivers/acpi
parentACPI: add driver component definitions to sysfs debug_layers (diff)
downloadlinux-87b586088ef953c602680e5aff8ab83a2e299498.tar.xz
linux-87b586088ef953c602680e5aff8ab83a2e299498.zip
ACPI: turn off all debug output by default
When CONFIG_ACPI_DEBUG=y, the default acpi_dbg_layer and acpi_dbg_level values built into the ACPI CA have some debug output enabled. We'd rather be quiet unless the user actually specified the acpi.debug_level argument. This enables distros to ship with CONFIG_ACPI_DEBUG=y without inundating users with debug output. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/bus.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 765fd1c56cd6..7edf6d913c13 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -688,6 +688,14 @@ void __init acpi_early_init(void)
if (acpi_disabled)
return;
+ /*
+ * ACPI CA initializes acpi_dbg_level to non-zero, which means
+ * we get debug output merely by turning on CONFIG_ACPI_DEBUG.
+ * Turn it off so we don't get output unless the user specifies
+ * acpi.debug_level.
+ */
+ acpi_dbg_level = 0;
+
printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
/* enable workarounds, unless strict ACPI spec. compliance */