Messages in this thread Patch in this message | | | From | Carlos Corbacho <> | Subject | [PATCH 1/2] acer-wmi - Fail gracefully if ACPI is disabled | Date | Mon, 11 Feb 2008 19:55:03 +0000 |
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acer-wmi - Fail gracefully if ACPI is disabled
From: Carlos Corbacho <carlos@strangeworlds.co.uk>
WMI drivers, like their ACPI counterparts, should also check if ACPI is disabled or not, and bail out if so, otherwise we cause a crash.
Spotted by Ingo Molnar.
Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk> CC: Ingo Molnar <mingo@elte.hu> CC: Linus Torvalds <torvalds@linux-foundation.org> CC: Andrew Morton <akpm@linux-foundation.org> CC: Len Brown <lenb@kernel.org> ---
drivers/misc/acer-wmi.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c index d7aea93..6e81027 100644 --- a/drivers/misc/acer-wmi.c +++ b/drivers/misc/acer-wmi.c @@ -1029,6 +1029,9 @@ static int __init acer_wmi_init(void) { int err; + if (acpi_disabled) + return -ENODEV; + printk(ACER_INFO "Acer Laptop ACPI-WMI Extras version %s\n", ACER_WMI_VERSION);
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