From a74dd5fdabcd34c93e17e9c7024eeb503c92b048 Mon Sep 17 00:00:00 2001 From: Carlos Corbacho Date: Sat, 4 Apr 2009 09:33:29 +0100 Subject: [PATCH] acer-wmi: Blacklist Acer Aspire One The Aspire One's ACPI-WMI interface is a placeholder that does nothing, and the invalid results that we get from it are now causing userspace problems as acer-wmi always returns that the rfkill is enabled (i.e. the radio is off, when it isn't). As it's hardware controlled, acer-wmi isn't needed on the Aspire One either. Thanks to Andy Whitcroft at Canonical for tracking down Ubuntu's userspace issues to this. Signed-off-by: Carlos Corbacho Reported-by: Andy Whitcroft Cc: stable@kernel.org Signed-off-by: Len Brown --- drivers/platform/x86/acer-wmi.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c index a6a42e8c060b..60fbef283e73 100644 --- a/drivers/platform/x86/acer-wmi.c +++ b/drivers/platform/x86/acer-wmi.c @@ -225,6 +225,25 @@ static struct quirk_entry quirk_fujitsu_amilo_li_1718 = { .wireless = 2, }; +/* The Aspire One has a dummy ACPI-WMI interface - disable it */ +static struct dmi_system_id __devinitdata acer_blacklist[] = { + { + .ident = "Acer Aspire One (SSD)", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"), + }, + }, + { + .ident = "Acer Aspire One (HDD)", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"), + }, + }, + {} +}; + static struct dmi_system_id acer_quirks[] = { { .callback = dmi_matched, @@ -1254,6 +1273,12 @@ static int __init acer_wmi_init(void) printk(ACER_INFO "Acer Laptop ACPI-WMI Extras\n"); + if (dmi_check_system(acer_blacklist)) { + printk(ACER_INFO "Blacklisted hardware detected - " + "not loading\n"); + return -ENODEV; + } + find_quirks(); /* -- 2.20.1