[PATCH] UBUNTU: SAUCE: Quirk to fix suspend/resume on Lenovo Edge 11/13/14/15

Tim Gardner tcanonical at tpi.com
Wed Jan 12 20:41:28 UTC 2011


On 01/11/2011 05:24 PM, Manoj Iyer wrote:
> On Lenovo Edge 11/13/14/15 laptops resume from suspend does not work,
> Check IRQ0 routing and if it is routed to INT0 of IOAPIC skip the
> timer override. This patch was tested on Edge 11 and Edge 14, where
> ATI Technologies Inc SBx00 SMBus Controller rev ids are 41 or 42.
>
> Signed-off-by: Manoj Iyer<manoj.iyer at canonical.com>
> ---
>   arch/x86/kernel/early-quirks.c |    2 +-
>   1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
> index ebdb85c..0e30990 100644
> --- a/arch/x86/kernel/early-quirks.c
> +++ b/arch/x86/kernel/early-quirks.c
> @@ -166,7 +166,7 @@ static void __init ati_bugs_contd(int num, int slot, int func)
>   		return;
>
>   	rev = ati_sbx00_rev(num, slot, func);
> -	if (rev>  0x13)
> +	if (rev>  0x13&&  (rev != 0x41&&  rev != 0x42))
>   		return;
>
>   	/* check for IRQ0 interrupt swap */

This seems like a BIOS setup issue. Can we make the assumption that all 
ATI SBUS systems having revisions 0x41 or 0x42 behave correctly wrt 
acpi_skip_timer_override on _all_ platforms? I think you need to further 
qualify this quirk based on DMI info.

rtg
-- 
Tim Gardner tim.gardner at canonical.com



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