linux-kernel - Re: [PATCH] Add quirk for ACPI reboots on Intel DP55KG boards.

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Date:	Thu, 15 Oct 2009 18:53:20 -0400 (EDT)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	Bryan Donlan <bdonlan@...il.com>
cc:	bruce.w.allan@...el.com, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: Re: [PATCH] Add quirk for ACPI reboots on Intel DP55KG boards.



On Thu, 15 Oct 2009, Justin Piszcz wrote:

>
>
> On Thu, 15 Oct 2009, Bryan Donlan wrote:
>
>> Keyboard-based and BIOS-based reboots don't work on Intel DP55KG boards;
>> use ACPI reboots instead.
>> 
>> Reported-By: Justin Piszcz <jpiszcz@...idpixels.com>
>> Cc: Thomas Gleixner <tglx@...utronix.de>
>> Cc: Ingo Molnar <mingo@...hat.com>
>> Cc: "H. Peter Anvin" <hpa@...or.com>
>> Cc: x86@...nel.org
>> Signed-off-by: Bryan Donlan <bdonlan@...il.com>
>> ---
>> arch/x86/kernel/reboot.c |   23 +++++++++++++++++++++++
>> 1 files changed, 23 insertions(+), 0 deletions(-)
>> 
>> Justin, could you give this patch a try? It should make the reboot=acpi
>> workaround automatic.
>> (x86 maintainers CC'd)
>> 
>> diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
>> index a1a3cdd..67bfcef 100644
>> --- a/arch/x86/kernel/reboot.c
>> +++ b/arch/x86/kernel/reboot.c
>> @@ -134,6 +134,21 @@ static int __init set_bios_reboot(const struct 
>> dmi_system_id *d)
>> 	return 0;
>> }
>> 
>> +/*
>> + * Some machines require the "reboot=a" commandline option.
>> + * This quirk makes that automatic.
>> + */
>> +static int __init set_acpi_reboot(const struct dmi_system_id *d)
>> +{
>> +	if (reboot_type != BOOT_ACPI) {
>> +		reboot_type = BOOT_ACPI;
>> +		printk(KERN_INFO "%s series board detected. Selecting ACPI "
>> +				"method for reboots.\n", d->ident);
>> +	}
>> +	return 0;
>> +}
>> +
>> +
>> static struct dmi_system_id __initdata reboot_dmi_table[] = {
>> 	{	/* Handle problems with rebooting on Dell E520's */
>> 		.callback = set_bios_reboot,
>> @@ -259,6 +274,14 @@ static struct dmi_system_id __initdata 
>> reboot_dmi_table[] = {
>> 			DMI_MATCH(DMI_PRODUCT_NAME, "SBC-FITPC2"),
>> 		},
>> 	},
>> +	{	/* Handle problems with rebooting on Intel DP55KG */
>> +		.callback = set_acpi_reboot,
>> +		.ident = "Intel DP55KG",
>> +		.matches = {
>> +			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
>> +			DMI_MATCH(DMI_PRODUCT_NAME, "DP55KG"),
>> +		},
>> +	},
>> 	{ }
>> };
>> 
>> -- 
>> 1.6.3.3
>> 
>
> Hello,
>
> # patch -p1 < /home/jpiszcz/patch patching file arch/x86/kernel/reboot.c
> Hunk #1 succeeded at 132 (offset -2 lines).
> Hunk #2 succeeded at 272 (offset -2 lines).
>
> # uname -a
> Linux p34.internal.lan 2.6.31.3 #8 SMP Wed Oct 14 14:37:37 EDT 2009 x86_64 
> GNU/Linux
>
> # ls -l /usr/src/linux/.config-* | tail -n 1
> -rw-r--r-- 1 root root 45762 2009-10-15 18:31 
> /usr/src/linux/.config-2.6.31.3-9
>
> Hi,
>
> Thanks for the patch-- tested, but unfortunately it still hanged at the 
> reboot process (when I did not use reboot=a).
>
> I see in the patch:
>> +             printk(KERN_INFO "%s series board detected. Selecting ACPI
>
> But..
>
> $ dmesg | grep -i 'series board'
> $
>
> $ uname -a
> Linux p34.internal.lan 2.6.31.3 #9 SMP Thu Oct 15 18:31:29 EDT 2009 x86_64 
> GNU/Linux
>
> $ cat /proc/cmdline auto BOOT_IMAGE=2.6.31.3-9 ro root=812 3w-9xxx.use_msi=1
>
>> +			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
>> +			DMI_MATCH(DMI_PRODUCT_NAME, "DP55KG"),
>
> But..
>
> # dmidecode|grep -i dp55
>        Product Name: DP55KG
>
> Stops at Corp.
>
> # dmidecode|grep -i vendor
>        Vendor: Intel Corp.
>
> Changed that line to:
> +     DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."),
>
> That did not work either, ideas?
>
> Justin.
>

Ack, hold a second, I updated the patch/info in the e-mail but did not 
save it before I rebooted as I am rebooting every 5 minutes.

Trying w/ Intel Corp.
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