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ACPI: turn off all debug output by default

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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>
This commit is contained in:
Bjorn Helgaas 2008-11-07 16:58:00 -07:00 committed by Len Brown
parent bdd7279919
commit 87b586088e
1 changed files with 8 additions and 0 deletions
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8
drivers/acpi/bus.c
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@ -688,6 +688,14 @@ void __init acpi_early_init(void)
if (acpi_disabled) if (acpi_disabled)
return; 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); printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
/* enable workarounds, unless strict ACPI spec. compliance */ /* enable workarounds, unless strict ACPI spec. compliance */